Obtaining names of data frame in Julia

Obtaining names of data frame in Julia - dataframe

I am trying to simply extract the list of names of a dataframe columns in Julia, but I get this error message:
ERROR: MethodError: objects of type Array{String,1} are not callable
Use square brackets [] for indexing an Array.
I am simply doing a call names(df).
(It also complains about some IOerror).
Thanks.
Edit: Here is the (ridiculously long) error I get with the MWE suggested below:
julia> df = DataFrame(:a => [2,3,5])
3×1 DataFrame
¦ Row ¦ a ¦
¦ ¦ Int64 ¦
+-----+-------¦
¦ 1 ¦ 2 ¦
¦ 2 ¦ 3 ¦
¦ 3 ¦ 5 ¦
julia> names(df)
ERROR: MethodError: objects of type Array{String,1} are not callable
Use square brackets [] for indexing an Array.
Stacktrace:
[1] top-level scope at REPL[144]:1
caused by [exception 6]
IOError: symlink: operation not permitted (EPERM)
Stacktrace:
[1] uv_error at .\libuv.jl:97 [inlined]
[2] symlink(::String, ::String) at .\file.jl:851
[3] probe_symlink_creation(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\PlatformEngines.jl:131
[4] #unpack#95(::Bool, ::typeof(Pkg.PlatformEngines.unpack), ::String, ::String) at D:\buildbot\wo
rker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:727
[5] #unpack at .\logging.jl:0 [inlined]
[6] #download_verify_unpack#100(::Nothing, ::Bool, ::Bool, ::Bool, ::typeof(Pkg.PlatformEngines.do
wnload_verify_unpack), ::String, ::String, ::String) at D:\buildbot\worker\package_win64\build\usr\
share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:894
[7] #download_verify_unpack at .\none:0 [inlined]
[8] #download_artifact#38(::Bool, ::typeof(Pkg.Artifacts.download_artifact), ::Base.SHA1, ::String
, ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts
.jl:744
[9] #download_artifact at .\none:0 [inlined]
[10] #ensure_artifact_installed#42(::Pkg.BinaryPlatforms.Platform, ::Bool, ::typeof(Pkg.Artifacts.
ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at D:\buildbot\worker\package_w
in64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:869
[11] (::Pkg.Artifacts.var"#kw##ensure_artifact_installed")(::NamedTuple{(:platform, :verbose),Tupl
e{Pkg.BinaryPlatforms.Windows,Bool}}, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String,
::Dict{String,Any}, ::String) at .\none:0
[12] #ensure_all_artifacts_installed#43(::Pkg.BinaryPlatforms.Platform, ::Nothing, ::Bool, ::Bool,
::typeof(Pkg.Artifacts.ensure_all_artifacts_installed), ::String) at D:\buildbot\worker\package_wi
n64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:919
[13] #ensure_all_artifacts_installed at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\Operations.jl:0 [inlined]
[14] #download_artifacts#78(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{String,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v
1.3\Pkg\src\Operations.jl:580
[15] #download_artifacts at .\none:0 [inlined]
[16] #download_artifacts#73(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share
\julia\stdlib\v1.3\Pkg\src\Operations.jl:570
[17] (::Pkg.Operations.var"#kw##download_artifacts")(::NamedTuple{(:platform,),Tuple{Pkg.BinaryPla
tforms.Windows}}, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at
.\none:0
[18] #add#112(::Bool, ::Pkg.BinaryPlatforms.Windows, ::typeof(Pkg.Operations.add), ::Pkg.Types.Con
text, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at D:\buildbot\worker\package_win64\b
uild\usr\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:1017
[19] #add at .\none:0 [inlined]
[20] #add#25(::Bool, ::Pkg.BinaryPlatforms.Windows, ::Base.Iterators.Pairs{Union{},Union{},Tuple{}
,NamedTuple{,Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1
}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:102
[21] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win6
4\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:72
[22] #add#24 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
69 [inlined]
[23] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:69 [
inlined]
[24] #add#21 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
67 [inlined]
[25] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:67 [
inlined]
[26] #add#20(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{,Tuple{}}}, ::typeof(Pkg.AP
I.add), ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API
.jl:66
[27] add(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\A
PI.jl:66
[28] top-level scope at REPL[65]:1
caused by [exception 5]
IOError: symlink: operation not permitted (EPERM)
Stacktrace:
[1] uv_error at .\libuv.jl:97 [inlined]
[2] symlink(::String, ::String) at .\file.jl:851
[3] probe_symlink_creation(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\PlatformEngines.jl:131
[4] #unpack#95(::Bool, ::typeof(Pkg.PlatformEngines.unpack), ::String, ::String) at D:\buildbot\wo
rker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:727
[5] #unpack at .\logging.jl:0 [inlined]
[6] #download_verify_unpack#100(::Nothing, ::Bool, ::Bool, ::Bool, ::typeof(Pkg.PlatformEngines.do
wnload_verify_unpack), ::String, ::String, ::String) at D:\buildbot\worker\package_win64\build\usr\
share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:894
[7] #download_verify_unpack at .\none:0 [inlined]
[8] #download_artifact#38(::Bool, ::typeof(Pkg.Artifacts.download_artifact), ::Base.SHA1, ::String
, ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts
.jl:744
[9] #download_artifact at .\none:0 [inlined]
[10] #ensure_artifact_installed#42(::Pkg.BinaryPlatforms.Platform, ::Bool, ::typeof(Pkg.Artifacts.
ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at D:\buildbot\worker\package_w
in64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:869
[11] (::Pkg.Artifacts.var"#kw##ensure_artifact_installed")(::NamedTuple{(:platform, :verbose),Tupl
e{Pkg.BinaryPlatforms.Windows,Bool}}, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String,
::Dict{String,Any}, ::String) at .\none:0
[12] #ensure_all_artifacts_installed#43(::Pkg.BinaryPlatforms.Platform, ::Nothing, ::Bool, ::Bool,
::typeof(Pkg.Artifacts.ensure_all_artifacts_installed), ::String) at D:\buildbot\worker\package_wi
n64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:919
[13] #ensure_all_artifacts_installed at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\Operations.jl:0 [inlined]
[14] #download_artifacts#78(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{String,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v
1.3\Pkg\src\Operations.jl:580
[15] #download_artifacts at .\none:0 [inlined]
[16] #download_artifacts#73(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share
\julia\stdlib\v1.3\Pkg\src\Operations.jl:570
[17] (::Pkg.Operations.var"#kw##download_artifacts")(::NamedTuple{(:platform,),Tuple{Pkg.BinaryPla
tforms.Windows}}, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at
.\none:0
[18] #add#112(::Bool, ::Pkg.BinaryPlatforms.Windows, ::typeof(Pkg.Operations.add), ::Pkg.Types.Con
text, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at D:\buildbot\worker\package_win64\b
uild\usr\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:1017
[19] #add at .\none:0 [inlined]
[20] #add#25(::Bool, ::Pkg.BinaryPlatforms.Windows, ::Base.Iterators.Pairs{Union{},Union{},Tuple{}
,NamedTuple{,Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1
}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:102
[21] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win6
4\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:72
[22] #add#24 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
69 [inlined]
[23] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:69 [
inlined]
[24] #add#21 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
67 [inlined]
[25] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:67 [
inlined]
[26] #add#20(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{,Tuple{}}}, ::typeof(Pkg.AP
I.add), ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API
.jl:66
[27] add(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\A
PI.jl:66
[28] top-level scope at REPL[65]:1
caused by [exception 4]
IOError: symlink: operation not permitted (EPERM)
Stacktrace:
[1] uv_error at .\libuv.jl:97 [inlined]
[2] symlink(::String, ::String) at .\file.jl:851
[3] probe_symlink_creation(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\PlatformEngines.jl:131
[4] #unpack#95(::Bool, ::typeof(Pkg.PlatformEngines.unpack), ::String, ::String) at D:\buildbot\wo
rker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:727
[5] #unpack at .\logging.jl:0 [inlined]
[6] #download_verify_unpack#100(::Nothing, ::Bool, ::Bool, ::Bool, ::typeof(Pkg.PlatformEngines.do
wnload_verify_unpack), ::String, ::String, ::String) at D:\buildbot\worker\package_win64\build\usr\
share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:894
[7] #download_verify_unpack at .\none:0 [inlined]
[8] #download_artifact#38(::Bool, ::typeof(Pkg.Artifacts.download_artifact), ::Base.SHA1, ::String
, ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts
.jl:744
[9] #download_artifact at .\none:0 [inlined]
[10] #ensure_artifact_installed#42(::Pkg.BinaryPlatforms.Platform, ::Bool, ::typeof(Pkg.Artifacts.
ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at D:\buildbot\worker\package_w
in64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:869
[11] (::Pkg.Artifacts.var"#kw##ensure_artifact_installed")(::NamedTuple{(:platform, :verbose),Tupl
e{Pkg.BinaryPlatforms.Windows,Bool}}, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String,
::Dict{String,Any}, ::String) at .\none:0
[12] #ensure_all_artifacts_installed#43(::Pkg.BinaryPlatforms.Platform, ::Nothing, ::Bool, ::Bool,
::typeof(Pkg.Artifacts.ensure_all_artifacts_installed), ::String) at D:\buildbot\worker\package_wi
n64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:919
[13] #ensure_all_artifacts_installed at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\Operations.jl:0 [inlined]
[14] #download_artifacts#78(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{String,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v
1.3\Pkg\src\Operations.jl:580
[15] #download_artifacts at .\none:0 [inlined]
[16] #download_artifacts#73(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share
\julia\stdlib\v1.3\Pkg\src\Operations.jl:570
[17] (::Pkg.Operations.var"#kw##download_artifacts")(::NamedTuple{(:platform,),Tuple{Pkg.BinaryPla
tforms.Windows}}, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at
.\none:0
[18] #add#112(::Bool, ::Pkg.BinaryPlatforms.Windows, ::typeof(Pkg.Operations.add), ::Pkg.Types.Con
text, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at D:\buildbot\worker\package_win64\b
uild\usr\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:1017
[19] #add at .\none:0 [inlined]
[20] #add#25(::Bool, ::Pkg.BinaryPlatforms.Windows, ::Base.Iterators.Pairs{Union{},Union{},Tuple{}
,NamedTuple{,Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1
}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:102
[21] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win6
4\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:72
[22] #add#24 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
69 [inlined]
[23] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:69 [
inlined]
[24] #add#21 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
67 [inlined]
[25] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:67 [
inlined]
[26] #add#20(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{,Tuple{}}}, ::typeof(Pkg.AP
I.add), ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API
.jl:66
[27] add(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\A
PI.jl:66
[28] top-level scope at REPL[65]:1
caused by [exception 3]
IOError: symlink: operation not permitted (EPERM)
Stacktrace:
[1] uv_error at .\libuv.jl:97 [inlined]
[2] symlink(::String, ::String) at .\file.jl:851
[3] probe_symlink_creation(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\PlatformEngines.jl:131
[4] #unpack#95(::Bool, ::typeof(Pkg.PlatformEngines.unpack), ::String, ::String) at D:\buildbot\wo
rker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:727
[5] #unpack at .\logging.jl:0 [inlined]
[6] #download_verify_unpack#100(::Nothing, ::Bool, ::Bool, ::Bool, ::typeof(Pkg.PlatformEngines.do
wnload_verify_unpack), ::String, ::String, ::String) at D:\buildbot\worker\package_win64\build\usr\
share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:894
[7] #download_verify_unpack at .\none:0 [inlined]
[8] #download_artifact#38(::Bool, ::typeof(Pkg.Artifacts.download_artifact), ::Base.SHA1, ::String
, ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts
.jl:744
[9] #download_artifact at .\none:0 [inlined]
[10] #ensure_artifact_installed#42(::Pkg.BinaryPlatforms.Platform, ::Bool, ::typeof(Pkg.Artifacts.
ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at D:\buildbot\worker\package_w
in64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:869
[11] (::Pkg.Artifacts.var"#kw##ensure_artifact_installed")(::NamedTuple{(:platform, :verbose),Tupl
e{Pkg.BinaryPlatforms.Windows,Bool}}, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String,
::Dict{String,Any}, ::String) at .\none:0
[12] #ensure_all_artifacts_installed#43(::Pkg.BinaryPlatforms.Platform, ::Nothing, ::Bool, ::Bool,
::typeof(Pkg.Artifacts.ensure_all_artifacts_installed), ::String) at D:\buildbot\worker\package_wi
n64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:919
[13] #ensure_all_artifacts_installed at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\Operations.jl:0 [inlined]
[14] #download_artifacts#78(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{String,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v
1.3\Pkg\src\Operations.jl:580
[15] #download_artifacts at .\none:0 [inlined]
[16] #download_artifacts#73(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share
\julia\stdlib\v1.3\Pkg\src\Operations.jl:570
[17] (::Pkg.Operations.var"#kw##download_artifacts")(::NamedTuple{(:platform,),Tuple{Pkg.BinaryPla
tforms.Windows}}, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at
.\none:0
[18] #add#112(::Bool, ::Pkg.BinaryPlatforms.Windows, ::typeof(Pkg.Operations.add), ::Pkg.Types.Con
text, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at D:\buildbot\worker\package_win64\b
uild\usr\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:1017
[19] #add at .\none:0 [inlined]
[20] #add#25(::Bool, ::Pkg.BinaryPlatforms.Windows, ::Base.Iterators.Pairs{Union{},Union{},Tuple{}
,NamedTuple{,Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1
}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:102
[21] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win6
4\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:72
[22] #add#24 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
69 [inlined]
[23] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:69 [
inlined]
[24] #add#21 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
67 [inlined]
[25] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:67 [
inlined]
[26] #add#20(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{,Tuple{}}}, ::typeof(Pkg.AP
I.add), ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API
.jl:66
[27] add(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\A
PI.jl:66
[28] top-level scope at REPL[20]:1
caused by [exception 2]
IOError: symlink: operation not permitted (EPERM)
Stacktrace:
[1] uv_error at .\libuv.jl:97 [inlined]
[2] symlink(::String, ::String) at .\file.jl:851
[3] probe_symlink_creation(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\PlatformEngines.jl:131
[4] #unpack#95(::Bool, ::typeof(Pkg.PlatformEngines.unpack), ::String, ::String) at D:\buildbot\wo
rker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:727
[5] #unpack at .\logging.jl:0 [inlined]
[6] #download_verify_unpack#100(::Nothing, ::Bool, ::Bool, ::Bool, ::typeof(Pkg.PlatformEngines.do
wnload_verify_unpack), ::String, ::String, ::String) at D:\buildbot\worker\package_win64\build\usr\
share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:894
[7] #download_verify_unpack at .\none:0 [inlined]
[8] #download_artifact#38(::Bool, ::typeof(Pkg.Artifacts.download_artifact), ::Base.SHA1, ::String
, ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts
.jl:744
[9] #download_artifact at .\none:0 [inlined]
[10] #ensure_artifact_installed#42(::Pkg.BinaryPlatforms.Platform, ::Bool, ::typeof(Pkg.Artifacts.
ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at D:\buildbot\worker\package_w
in64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:869
[11] (::Pkg.Artifacts.var"#kw##ensure_artifact_installed")(::NamedTuple{(:platform, :verbose),Tupl
e{Pkg.BinaryPlatforms.Windows,Bool}}, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String,
::Dict{String,Any}, ::String) at .\none:0
[12] #ensure_all_artifacts_installed#43(::Pkg.BinaryPlatforms.Platform, ::Nothing, ::Bool, ::Bool,
::typeof(Pkg.Artifacts.ensure_all_artifacts_installed), ::String) at D:\buildbot\worker\package_wi
n64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:919
[13] #ensure_all_artifacts_installed at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\Operations.jl:0 [inlined]
[14] #download_artifacts#78(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{String,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v
1.3\Pkg\src\Operations.jl:580
[15] #download_artifacts at .\none:0 [inlined]
[16] #download_artifacts#73(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share
\julia\stdlib\v1.3\Pkg\src\Operations.jl:570
[17] (::Pkg.Operations.var"#kw##download_artifacts")(::NamedTuple{(:platform,),Tuple{Pkg.BinaryPla
tforms.Windows}}, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at
.\none:0
[18] #add#112(::Bool, ::Pkg.BinaryPlatforms.Windows, ::typeof(Pkg.Operations.add), ::Pkg.Types.Con
text, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at D:\buildbot\worker\package_win64\b
uild\usr\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:1017
[19] #add at .\none:0 [inlined]
[20] #add#25(::Bool, ::Pkg.BinaryPlatforms.Windows, ::Base.Iterators.Pairs{Union{},Union{},Tuple{}
,NamedTuple{,Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1
}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:102
[21] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win6
4\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:72
[22] #add#24 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
69 [inlined]
[23] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:69 [
inlined]
[24] #add#21 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
67 [inlined]
[25] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:67 [
inlined]
[26] #add#20(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{,Tuple{}}}, ::typeof(Pkg.AP
I.add), ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API
.jl:66
[27] add(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\A
PI.jl:66
[28] top-level scope at REPL[20]:1
caused by [exception 1]
IOError: symlink: operation not permitted (EPERM)
Stacktrace:
[1] uv_error at .\libuv.jl:97 [inlined]
[2] symlink(::String, ::String) at .\file.jl:851
[3] probe_symlink_creation(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\PlatformEngines.jl:131
[4] #unpack#95(::Bool, ::typeof(Pkg.PlatformEngines.unpack), ::String, ::String) at D:\buildbot\wo
rker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:727
[5] #unpack at .\logging.jl:0 [inlined]
[6] #download_verify_unpack#100(::Nothing, ::Bool, ::Bool, ::Bool, ::typeof(Pkg.PlatformEngines.do
wnload_verify_unpack), ::String, ::String, ::String) at D:\buildbot\worker\package_win64\build\usr\
share\julia\stdlib\v1.3\Pkg\src\PlatformEngines.jl:894
[7] #download_verify_unpack at .\none:0 [inlined]
[8] #download_artifact#38(::Bool, ::typeof(Pkg.Artifacts.download_artifact), ::Base.SHA1, ::String
, ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts
.jl:744
[9] #download_artifact at .\none:0 [inlined]
[10] #ensure_artifact_installed#42(::Pkg.BinaryPlatforms.Platform, ::Bool, ::typeof(Pkg.Artifacts.
ensure_artifact_installed), ::String, ::Dict{String,Any}, ::String) at D:\buildbot\worker\package_w
in64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:869
[11] (::Pkg.Artifacts.var"#kw##ensure_artifact_installed")(::NamedTuple{(:platform, :verbose),Tupl
e{Pkg.BinaryPlatforms.Windows,Bool}}, ::typeof(Pkg.Artifacts.ensure_artifact_installed), ::String,
::Dict{String,Any}, ::String) at .\none:0
[12] #ensure_all_artifacts_installed#43(::Pkg.BinaryPlatforms.Platform, ::Nothing, ::Bool, ::Bool,
::typeof(Pkg.Artifacts.ensure_all_artifacts_installed), ::String) at D:\buildbot\worker\package_wi
n64\build\usr\share\julia\stdlib\v1.3\Pkg\src\Artifacts.jl:919
[13] #ensure_all_artifacts_installed at D:\buildbot\worker\package_win64\build\usr\share\julia\std
lib\v1.3\Pkg\src\Operations.jl:0 [inlined]
[14] #download_artifacts#78(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{String,1}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v
1.3\Pkg\src\Operations.jl:580
[15] #download_artifacts at .\none:0 [inlined]
[16] #download_artifacts#73(::Pkg.BinaryPlatforms.Windows, ::Bool, ::typeof(Pkg.Operations.downloa
d_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win64\build\usr\share
\julia\stdlib\v1.3\Pkg\src\Operations.jl:570
[17] (::Pkg.Operations.var"#kw##download_artifacts")(::NamedTuple{(:platform,),Tuple{Pkg.BinaryPla
tforms.Windows}}, ::typeof(Pkg.Operations.download_artifacts), ::Array{Pkg.Types.PackageSpec,1}) at
.\none:0
[18] #add#112(::Bool, ::Pkg.BinaryPlatforms.Windows, ::typeof(Pkg.Operations.add), ::Pkg.Types.Con
text, ::Array{Pkg.Types.PackageSpec,1}, ::Array{Base.UUID,1}) at D:\buildbot\worker\package_win64\b
uild\usr\share\julia\stdlib\v1.3\Pkg\src\Operations.jl:1017
[19] #add at .\none:0 [inlined]
[20] #add#25(::Bool, ::Pkg.BinaryPlatforms.Windows, ::Base.Iterators.Pairs{Union{},Union{},Tuple{}
,NamedTuple{,Tuple{}}}, ::typeof(Pkg.API.add), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1
}) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:102
[21] add(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at D:\buildbot\worker\package_win6
4\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:72
[22] #add#24 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
69 [inlined]
[23] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:69 [
inlined]
[24] #add#21 at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:
67 [inlined]
[25] add at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API.jl:67 [
inlined]
[26] #add#20(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{,Tuple{}}}, ::typeof(Pkg.AP
I.add), ::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\API
.jl:66
[27] add(::String) at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.3\Pkg\src\A
PI.jl:66
[28] top-level scope at REPL[20]:1

You've assigned a variable (of type Vector{String}) called names in your workspace prior to using DataFrames (Julia will prevent you from doing it after). The error message just tells you that you're trying to use names as function, which it isn't in your workspace.

names(df) should work on a data frame:
julia> using DataFrames
julia> df = DataFrame(:a => [2, 3, 5])
3×1 DataFrame
│ Row │ a │
│ │ Int64 │
├─────┼───────┤
│ 1 │ 2 │
│ 2 │ 3 │
│ 3 │ 5 │
julia> names(df)
1-element Array{Symbol,1}:
:a
Can you show us your code and try println(df) as well?

Related

PersistenceQuery and Akka-Http zombie stream

Im atempting to stream the PersistenceQuery result with akka-http as SSE but it seems like when the http connection is closed from the client the PersistenceQuery stream is still hitting the event backend periodically.
// Http part
complete {
source(id)
.map(e => e.event) // other transformations
.map(e => ServerSentEvent(m.toString))
.keepAlive(4 seconds, () => ServerSentEvent.heartbeat)
}
// source
def source(id: UUID)(implicit system: ActorSystem, materializer: ActorMaterializer)= {
import system.dispatcher
val journalQuery = PersistenceQuery(system).readJournalFor[CassandraReadJournal](CassandraReadJournal.Identifier)
val futureSrcGraph: RunnableGraph[Future[Source[EventEnvelope, NotUsed]]] =
journalQuery.currentEventsByPersistenceId(id.toString, 0, Long.MaxValue)
.map(_.sequenceNr)
.toMat(Sink.last)(Keep.right)
.mapMaterializedValue(fs => fs.recoverWith {
case _ => Future { 0L } // assume we start at 1
}.map(s => journalQuery.eventsByPersistenceId(id.toString, s + 1, Long.MaxValue)))
Source.fromFutureSource(futureSrcGraph.run())
So this basically works the only problem is that the stream is never finished or so it seems. I have tried it with both CassandraReadJournal and LevelDb
Example of the log output:
[DEBUG] [06/18/2018 10:52:16.774] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query from seqNr [6] in partition [0]
[DEBUG] [06/18/2018 10:52:16.790] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query took [15] ms (empty)
[DEBUG] [06/18/2018 10:52:16.790] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query from seqNr [6] in partition [1]
[DEBUG] [06/18/2018 10:52:16.796] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query took [5] ms (empty)
[DEBUG] [06/18/2018 10:52:19.768] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query from seqNr [6] in partition [0]
[DEBUG] [06/18/2018 10:52:19.784] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query took [15] ms (empty)
[DEBUG] [06/18/2018 10:52:19.784] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query from seqNr [6] in partition [1]
[DEBUG] [06/18/2018 10:52:19.790] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query took [6] ms (empty)
[DEBUG] [06/18/2018 10:52:22.765] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query from seqNr [6] in partition [0]
[DEBUG] [06/18/2018 10:52:22.772] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query took [6] ms (empty)
[DEBUG] [06/18/2018 10:52:22.772] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query from seqNr [6] in partition [1]
[DEBUG] [06/18/2018 10:52:22.790] [sys-cassandra-plugin-default-dispatcher-17] [EventsByPersistenceIdStage(akka://sys)] EventsByPersistenceId [c6031a8a-db71-4dcb-9d4f-f140faa2f4c4] Query took [17] ms (empty)
And it keeps going for ever.
I have also tried omitting the Source.fromFutureSource and just running journalQuery.eventsByPersistenceId with the same results.
What am I doing wrong?

The here were that my corporat proxy never drops the connection to the server even when the client closes the connection.

How to pass column name with function readtable in julia?

using DataFrames
label = ["Data", "tempo", "RAh", "RAm", "RAs", "DEh", "DEm", "DEs"]
df = readtable("mars.dat", separator = ' ',header = false, names = label)
I get the next error
MethodError: no method matching DataFrames.ParseOptions(::Bool, ::Char, ::Array{Char,1}, ::Char, ::Array{String,1}, ::Array{String,1}, ::Array{String,1}, ::Bool, ::Array{String,1}, ::Array{Any,1}, ::Bool, ::Char, ::Bool, ::Int64, ::Array{Int64,1}, ::Bool, ::Symbol, ::Bool, ::Bool)
Closest candidates are:
DataFrames.ParseOptions(::Bool, ::Char, ::Array{Char,1}, ::Char, ::Array{S<:String,1}, ::Array{T<:String,1}, ::Array{T<:String,1}, ::Bool, ::Array{Symbol,1}, ::Array{T,1} where T, ::Bool, ::Char, ::Bool, ::Int64, ::AbstractArray{Int64,1}, ::Bool, ::Symbol, ::Bool, ::Bool) where {S<:String, T<:String} at /home/juser/.julia/v0.6/DataFrames/src/dataframe/io.jl:9
Stacktrace:
[1] #readtable#84(::Bool, ::Char, ::Array{Char,1}, ::Char, ::Array{String,1}, ::Array{String,1}, ::Array{String,1}, ::Bool, ::Int64, ::Array{String,1}, ::Array{Any,1}, ::Bool, ::Char, ::Bool, ::Int64, ::Array{Int64,1}, ::Bool, ::Symbol, ::Bool, ::Bool, ::DataFrames.#readtable, ::IOStream, ::Int64) at /home/juser/.julia/v0.6/DataFrames/src/dataframe/io.jl:843
[2] (::DataFrames.#kw##readtable)(::Array{Any,1}, ::DataFrames.#readtable, ::IOStream, ::Int64) at ./<missing>:0
[3] #readtable#85(::Bool, ::Char, ::Array{Char,1}, ::Char, ::Array{String,1}, ::Array{String,1}, ::Array{String,1}, ::Bool, ::Int64, ::Array{String,1}, ::Array{Any,1}, ::Bool, ::Char, ::Bool, ::Int64, ::Array{Int64,1}, ::Bool, ::Symbol, ::Bool, ::Bool, ::DataFrames.#readtable, ::String) at /home/juser/.julia/v0.6/DataFrames/src/dataframe/io.jl:945
[4] (::DataFrames.#kw##readtable)(::Array{Any,1}, ::DataFrames.#readtable, ::String) at ./<missing>:0

From the documentation for readtable, it seems it expects a vector of symbols, not a vector of strings:
names::Vector{Symbol} – Use the values in this array as the names for all columns instead of or in lieu of the names in the file's header.
You can convert your vector of strings to a vector of symbols (assuming your strings are valid names) with a list comprehension, e.g.
labelSymbols = [Symbol(i) for i in label];
and pass this to your names parameter.
Disclaimer: I have not tested to see if this works as I don't have access to the mars.dat file. I'm just reading the docs and pointing out the most likely problem.

Transform the output of an SqlQuery to numeric

I have got a Sql table and connected to it using R with odbcConnect(). The data I used is to find here: http://robjhyndman.com/tsdldata/data/nybirths.dat
I loaded a Query with
bstring <- sqlQuery(dbcon, "SELECT maptostring(__raw__) FROM births")
where dbcon is the connection to my database. The returned data is the following String:
bstring
$maptostring
[1] {\n "26.663;23.598;26.931;24.74;25.806" : "24.364;24.477;23.901;23.175;23.227"\n}\n
[2] {\n "26.663;23.598;26.931;24.74;25.806" : "21.672;21.87;21.439;21.089;23.709"\n}\n
[3] {\n "26.663;23.598;26.931;24.74;25.806" : "21.669;21.752;20.761;23.479;23.824"\n}\n
[4] {\n "26.663;23.598;26.931;24.74;25.806" : "23.105;23.11;21.759;22.073;21.937"\n}\n
[5] {\n "26.663;23.598;26.931;24.74;25.806" : "20.035;23.59;21.672;22.222;22.123"\n}\n
[6] {\n "26.663;23.598;26.931;24.74;25.806" : "23.95;23.504;22.238;23.142;21.059"\n}\n
[7] {\n "26.663;23.598;26.931;24.74;25.806" : "21.573;21.548;20;22.424;20.615"\n}\n
[8] {\n "26.663;23.598;26.931;24.74;25.806" : "21.761;22.874;24.104;23.748;23.262"\n}\n
[9] {\n "26.663;23.598;26.931;24.74;25.806" : "22.907;21.519;22.025;22.604;20.894"\n}\n
[10] {\n "26.663;23.598;26.931;24.74;25.806" : "24.677;23.673;25.32;23.583;24.671"\n}\n
[11] {\n "26.663;23.598;26.931;24.74;25.806" : "24.454;24.122;24.252;22.084;22.991"\n}\n
[12] {\n "26.663;23.598;26.931;24.74;25.806" : "23.287;23.049;25.076;24.037;24.43"\n}\n
[13] {\n "26.663;23.598;26.931;24.74;25.806" : "24.667;26.451;25.618;25.014;25.11"\n}\n
[14] {\n "26.663;23.598;26.931;24.74;25.806" : "22.964;23.981;23.798;22.27;24.775"\n}\n
[15] {\n "26.663;23.598;26.931;24.74;25.806" : "22.646;23.988;24.737;26.276;25.816"\n}\n
[16] {\n "26.663;23.598;26.931;24.74;25.806" : "25.21;25.199;23.162;24.707;24.364"\n}\n
[17]{\n "26.663;23.598;26.931;24.74;25.806" : "22.644;25.565;24.062;25.431;24.635"\n}\n
[18] {\n "26.663;23.598;26.931;24.74;25.806" : "27.009;26.606;26.268;26.462;25.246"\n}\n
[19] {\n "26.663;23.598;26.931;24.74;25.806" : "25.18;24.657;23.304;26.982;26.199"\n}\n
[20] {\n "26.663;23.598;26.931;24.74;25.806" : "27.21;26.122;26.706;26.878;26.152"\n}\n
[21] {\n "26.663;23.598;26.931;24.74;25.806" : "26.379;24.712;25.688;24.99;24.239"\n}\n
[22] {\n "26.663;23.598;26.931;24.74;25.806" : "26.721;23.475;24.767;26.219;28.361"\n}\n
[23] {\n "26.663;23.598;26.931;24.74;25.806" : "28.599;27.914;27.784;25.693;26.881"\n}\n
[24] {\n "26.663;23.598;26.931;24.74;25.806" : "26.217;24.218;27.914;26.975;28.527"\n}\n
[25] {\n "26.663;23.598;26.931;24.74;25.806" : "27.139;28.982;28.169;28.056;29.136"\n}\n
[26] {\n "26.663;23.598;26.931;24.74;25.806" : "26.291;26.987;26.589;24.848;27.543"\n}\n
[27] {\n "26.663;23.598;26.931;24.74;25.806" : "26.896;28.878;27.39;28.065;28.141"\n}\n
[28] {\n "26.663;23.598;26.931;24.74;25.806" : "29.048;28.484;26.634;27.735;27.132"\n}\n
[29] {\n "26.663;23.598;26.931;24.74;25.806" : "24.924;28.963;26.589;27.931;28.009"\n}\n
[30] {\n "26.663;23.598;26.931;24.74;25.806" : "29.229;28.759;28.405;27.945;25.912"\n}\n
[31] {\n "26.663;23.598;26.931;24.74;25.806" : "26.619;26.076;25.286;27.66;25.951"\n}\n
[32] {\n "26.663;23.598;26.931;24.74;25.806" : "26.398;25.565;28.865;30;29.261"\n}\n
[33] {\n "26.663;23.598;26.931;24.74;25.806" : "29.012;26.992;27.897"\n}\n
[34] {\n "26.663;23.598;26.931;24.74;25.806" : "24.364;24.477;23.901;23.175;23.227"\n}\n
[35] {\n "26.663;23.598;26.931;24.74;25.806" : "21.672;21.87;21.439;21.089;23.709"\n}\n
[36] {\n "26.663;23.598;26.931;24.74;25.806" : "21.669;21.752;20.761;23.479;23.824"\n}\n
[37] {\n "26.663;23.598;26.931;24.74;25.806" : "23.105;23.11;21.759;22.073;21.937"\n}\n
[38] {\n "26.663;23.598;26.931;24.74;25.806" : "20.035;23.59;21.672;22.222;22.123"\n}\n
[39] {\n "26.663;23.598;26.931;24.74;25.806" : "23.95;23.504;22.238;23.142;21.059"\n}\n
[40] {\n "26.663;23.598;26.931;24.74;25.806" : "21.573;21.548;20;22.424;20.615"\n}\n
[41] {\n "26.663;23.598;26.931;24.74;25.806" : "21.761;22.874;24.104;23.748;23.262"\n}\n
[42] {\n "26.663;23.598;26.931;24.74;25.806" : "22.907;21.519;22.025;22.604;20.894"\n}\n
[43] {\n "26.663;23.598;26.931;24.74;25.806" : "24.677;23.673;25.32;23.583;24.671"\n}\n
[44] {\n "26.663;23.598;26.931;24.74;25.806" : "24.454;24.122;24.252;22.084;22.991"\n}\n
[45] {\n "26.663;23.598;26.931;24.74;25.806" : "23.287;23.049;25.076;24.037;24.43"\n}\n
[46] {\n "26.663;23.598;26.931;24.74;25.806" : "24.667;26.451;25.618;25.014;25.11"\n}\n
[47] {\n "26.663;23.598;26.931;24.74;25.806" : "22.964;23.981;23.798;22.27;24.775"\n}\n
[48] {\n "26.663;23.598;26.931;24.74;25.806" : "22.646;23.988;24.737;26.276;25.816"\n}\n
[49] {\n "26.663;23.598;26.931;24.74;25.806" : "25.21;25.199;23.162;24.707;24.364"\n}\n
[50] {\n "26.663;23.598;26.931;24.74;25.806" : "22.644;25.565;24.062;25.431;24.635"\n}\n
[51] {\n "26.663;23.598;26.931;24.74;25.806" : "27.009;26.606;26.268;26.462;25.246"\n}\n
[52] {\n "26.663;23.598;26.931;24.74;25.806" : "25.18;24.657;23.304;26.982;26.199"\n}\n
[53] {\n "26.663;23.598;26.931;24.74;25.806" : "27.21;26.122;26.706;26.878;26.152"\n}\n
[54] {\n "26.663;23.598;26.931;24.74;25.806" : "26.379;24.712;25.688;24.99;24.239"\n}\n
[55] {\n "26.663;23.598;26.931;24.74;25.806" : "26.721;23.475;24.767;26.219;28.361"\n}\n
[56] {\n "26.663;23.598;26.931;24.74;25.806" : "28.599;27.914;27.784;25.693;26.881"\n}\n
[57] {\n "26.663;23.598;26.931;24.74;25.806" : "26.217;24.218;27.914;26.975;28.527"\n}\n
[58] {\n "26.663;23.598;26.931;24.74;25.806" : "27.139;28.982;28.169;28.056;29.136"\n}\n
[59] {\n "26.663;23.598;26.931;24.74;25.806" : "26.291;26.987;26.589;24.848;27.543"\n}\n
[60] {\n "26.663;23.598;26.931;24.74;25.806" : "26.896;28.878;27.39;28.065;28.141"\n}\n
[61] {\n "26.663;23.598;26.931;24.74;25.806" : "29.048;28.484;26.634;27.735;27.132"\n}\n
[62] {\n "26.663;23.598;26.931;24.74;25.806" : "24.924;28.963;26.589;27.931;28.009"\n}\n
[63] {\n "26.663;23.598;26.931;24.74;25.806" : "29.229;28.759;28.405;27.945;25.912"\n}\n
[64] {\n "26.663;23.598;26.931;24.74;25.806" : "26.619;26.076;25.286;27.66;25.951"\n}\n
[65] {\n "26.663;23.598;26.931;24.74;25.806" : "26.398;25.565;28.865;30;29.261"\n}\n
[66] {\n "26.663;23.598;26.931;24.74;25.806" : "29.012;26.992;27.897"\n}\n
33 Levels: {\n "26.663;23.598;26.931;24.74;25.806" : "20.035;23.59;21.672;22.222;22.123"\n}\n ...
I want to use ARIMA to create a forecast using this data. To do so I tried to parse this data into numeric using
bnumeric <- as.numeric(unlist(bstring))
This did not work well, I got a pretty useless vector of numbers. How can I extract the numbers from this data to create a forecast?

KANNEL SMPP not able to send message to geturl

We are not able to receive MO on smpp kannel
below if the configure smsbox configuration
group = smsbox
bearerbox-host = 127.0.0.1
sendsms-port = 13013
global-sender = 13013
sms-length = 500
smsbox-id = mysmsc
group = sendsms-user
username = tester
password = foobar
#max-messages=3
# http://kannel.machine:13013/cgi-bin/sendsms?username=tester&password=foobar
group = sms-service
accepted-smsc = smsc2
keyword = default
catch-all = yes
max-messages = 3
get-url = "http://some.com/rcv.php?sender=%p&text=%a"
group = smsbox-route
smsbox-id = mysmsc
smsc-id = smsc2
shortcode = 4867
below is the debug log
2016-08-29 22:22:47 [9639] [7] DEBUG: validity_period: NULL
2016-08-29 22:22:47 [9639] [7] DEBUG: registered_delivery: 0 = 0x00000000
2016-08-29 22:22:47 [9639] [7] DEBUG: replace_if_present_flag: 0 = 0x00000000
2016-08-29 22:22:47 [9639] [7] DEBUG: data_coding: 0 = 0x00000000
2016-08-29 22:22:47 [9639] [7] DEBUG: sm_default_msg_id: 0 = 0x00000000
2016-08-29 22:22:47 [9639] [7] DEBUG: sm_length: 4 = 0x00000004
2016-08-29 22:22:47 [9639] [7] DEBUG: short_message: "Test"
2016-08-29 22:22:47 [9639] [7] DEBUG: SMPP PDU dump ends.
2016-08-29 22:22:47 [9639] [7] WARNING: smsbox_list empty!
2016-08-29 22:22:47 [9639] [7] DEBUG: SMPP[smsc1]: Sending PDU:
2016-08-29 22:22:47 [9639] [7] DEBUG: SMPP PDU 0x7f6310005730 dump:
2016-08-29 22:22:47 [9639] [7] DEBUG: type_name: deliver_sm_resp
2016-08-29 22:22:47 [9639] [7] DEBUG: command_id: 2147483653 = 0x80000005
2016-08-29 22:22:47 [9639] [7] DEBUG: command_status: 0 = 0x00000000
2016-08-29 22:22:47 [9639] [4] WARNING: smsbox_list empty!
2016-08-29 22:22:47 [9639] [7] DEBUG: sequence_number: 118 = 0x00000076
2016-08-29 22:22:47 [9639] [7] DEBUG: message_id: NULL
2016-08-29 22:22:47 [9639] [7] DEBUG: SMPP PDU dump ends.

You don't have an smsc group there (smsc2 is not defined)

SQL Server Pivot Sum By Day Grand Total

The query work except the total sum of local amount. I can used sum IIF or case when to calculate the sum of the local amount as usual but I would like to know how it works using a SQL Server pivot.
The first query are pivot and with roll up and I want this below query union to it and given the output of grant total.
DECLARE #financialYear INT;
DECLARE #financialPeriod INT;
SET #financialYear = 2013;
SET #financialPeriod = 7;
SELECT chartOfAccountCategoryDescription,
chartOfAccountDescription,
coalesce([1], 0) AS [1],
coalesce([2], 0) AS [2],
coalesce([3], 0) AS [3],
coalesce([4], 0) AS [4],
coalesce([5], 0) AS [5]
,coalesce([6], 0) AS [6]
,coalesce([7], 0) AS [7]
,coalesce([8], 0) AS [8]
,coalesce([9], 0) AS [9]
,coalesce([10], 0) AS [10]
,coalesce([11], 0) AS [11]
,coalesce([12], 0) AS [12]
,coalesce([13], 0) AS [13]
,coalesce([14], 0) AS [14]
,coalesce([15], 0) AS [15]
,coalesce([16], 0) AS [16]
,coalesce([17], 0) AS [17]
,coalesce([18], 0) AS [18]
,coalesce([19], 0) AS [19]
,coalesce([20], 0) AS [20]
,coalesce([21], 0) AS [21]
,coalesce([22], 0) AS [22]
,coalesce([23], 0) AS [23]
,coalesce([24], 0) AS [24]
,coalesce([25], 0) AS [25]
,coalesce([26], 0) AS [26]
,coalesce([27], 0) AS [27]
,coalesce([28], 0) AS [28]
,coalesce([29], 0) AS [29]
,coalesce([30], 0) AS [30]
,coalesce([31], 0) AS [31]
,coalesce([Total], 0) AS [Total] FROM (
SELECT 'Total' AS chartOfAccountCategoryDescription
,' ' AS chartOfAccountDescription
,ISNULL(DATENAME(DAY, generalLedgerDate), 'Total') AS theMonth
,ABS(localAmount) AS items
FROM generalLedger
WHERE DATEPART(YEAR, generalLedgerDate) = #financialYear
) AS s
PIVOT(SUM(items) FOR theMonth IN (
[1]
,[2]
,[3]
,[4]
,[5]
,[6]
,[7]
,[8]
,[9]
,[10]
,[11]
,[12]
,[13]
,[14]
,[15]
,[16]
,[17]
,[18]
,[19]
,[20]
,[21]
,[22]
,[23]
,[24]
,[25]
,[26]
,[27]
,[28]
,[29]
,[30]
,[31]
,[Total]
)) AS p

We Keep Coding

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Obtaining names of data frame in Julia - dataframe

You've assigned a variable (of type Vector{String}) called names in your workspace prior to using DataFrames (Julia will prevent you from doing it after). The error message just tells you that you're trying to use names as function, which it isn't in your workspace.

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KANNEL SMPP not able to send message to geturl

SQL Server Pivot Sum By Day Grand Total

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