awk to print of column headers if field has dot in it - awk

In the tab-delimited file below I am trying to use awk to print out the headers of the fields if they contain a single . (dot). The other fields should not contain a . and I am going to use another awk to detect there data type (either alpha or integer --- could be a decimal). The below seems close but not working as expected. Thank you :).
file
Index HGMD Sanger Classification Pop
1 . . VUS .36
awk
awk -F'\t' '$2 && $3 ~ /./ && FNR == 1 {printf "dot detected in fields: ORS $0"}' file
Index HGMD Sanger Classification
desired output
dot detected in fields: HGMD, Sanger

Assuming you want the headers of the columns that have a single dot on any line (HGMD and Sanger here):
Index HGMD Sanger Classification Pop
1 . 2 VUS .36
1 . . VUS .36
One solution would be:
awk -F'\t' 'NR==1 {for (i=0 ; i <= NF ; i++) headers[i] = $i; } # 1
NR!=1 {for (i=0 ; i <= NF ; i++) if ($i == ".") dots[i] = 1} # 2
END { printf "Dots in fields: ";
for (x in headers) if (dots[x]) printf "%s ", headers[x]; # 3
printf "\n"
} ' file
(1) collect the headers from the first input line to array headers.
(2) On other input lines, compare the value to a single dot, and set the entry in array dots to record any found dots.
(3) Finally, print out headers of the columns with dots[i] set.
Output is Dots in fields: HGMD Sanger, i.e. they are only listed once.
The dot matches any character in a regex, so $3 ~ /./ in your snippet would be true if field 3 contained any character. Also, $2 && $3 ~ ... would first test field 2 for truthiness (an empty string is falsy), and then do the match on field 3.

Use an Awk as below
awk 'BEGIN{FS="\t"}NR==1{for(i=1;i<=NF;i++) header[i]=$i}{for(i=1;i<=NF;i++) { if (match($i,/^\.$/)) { print header[i] } } }' file
HGMD
Sanger
The idea is to get the header information from the first line hashed by index 1..n and when processing the actual lines, if the . is encountered, get the hashed value from the array and print it.

awk '
NR==1 { split($0,hdr); next }
{
for (i=1; i<=NF; i++) {
if ($i != ".") {
delete hdr[i]
}
}
}
END {
printf "dot detected in fields"
for (i in hdr) {
printf "%s %s", (c++?",":":"), hdr[i]
}
print ""
}
' file
dot detected in fields: HGMD, Sanger

Related

How to split a field into characters in awk?

I want to check if two fields in a field have common characters
first second // looking for "s"
third fourth // looking for "t" or "h" or "r"
some that
I want to print only the first two lines in which the fields have at least one common character.
I read the fields as
awk 'BEGIN{FS=" ";} CONDITION {print $0}' file.txt
In the CONDITION, I need to split one field into characters and check their existence in the other field.
// for $1
BEGIN{FS=""}
{ i=0; while(i<=NF) {
CHECK in $2; i++;
} print $0 }
but I am not sure how I should bring the fields ($1 and $2) to the second part.
You may use this regex way:
awk 'NF>=2 {
s = $1
p = $2
gsub(/[^[:alnum:][:blank:]_]/, "\\\\&", p)
sub("[" p "]", "", s)
}
s != $1' file
first second // looking for "s"
third fourth // looking for "t" or "h" or "r"
Here we use sub function to make a bracket expression i.e. [...] where ... is $2 and then remove there characters from $1. If $1 is not equal to s (saved value of $1) then there is still one common character between first 2 fields.
a straightforward implementation can be
$ awk '{for(i=1;i<=length($1);i++)
if(index($2,substr($1,i,1)))
{print; next}}' file
first second
third fourth
or,
$ awk '{n=split($1,f,"");
for(i=1;i<=n;i++)
if(index($2,f[i]))
{print; next}}' file
$ cat tst.awk
{
delete chars
for (i=1; i<=length($1); i++) {
chars[substr($1,i,1)]
}
for (i=1; i<=length($2); i++) {
if (substr($2,i,1) in chars) {
print
next
}
}
}
$ awk -f tst.awk file
first second // looking for "s"
third fourth // looking for "t" or "h" or "r"

extract info from a tag using awk

I have multi columns file and i want to extract some info in column 71.
I want to extract using tags which the value can be anything, for example i want to just extract AC=* ; AF=* , where the value can be anything .
I found similar question and gave it a try but it didn't work
Extract columns with values matching a specific pattern
Column 71 looks like this:
AC=14511;AC_AFR=382;AC_AMR=1177;AC_Adj=14343;AC_EAS=5;AC_FIN=427;AC_Het=11813;AC_Hom=1265;AC_NFE=11027;AC_OTH=97;AC_SAS=1228;AF=0.137;AN=106198;AN_AFR=8190;AN_AMR=10424;AN_Adj=99264;AN_EAS=7068;AN_FIN=6414;AN_NFE=51090;AN_OTH=658;AN_SAS=15420;BaseQRankSum=1.73;ClippingRankSum=-1.460e-01;DB;DP=1268322;FS=0.000;GQ_MEAN=190.24;GQ_STDDEV=319.67;Het_AFR=358;Het_AMR=1049;Het_EAS=5;Het_FIN=399;Het_NFE=8799;Het_OTH=83;Het_SAS=1120;Hom_AFR=12;Hom_AMR=64;Hom_EAS=0;Hom_FIN=14;Hom_NFE=1114;Hom_OTH=7;Hom_SAS=54;InbreedingCoeff=0.0478;MQ=60.00;MQ0=0;MQRankSum=0.037;NCC=270;POSITIVE_TRAIN_SITE;QD=21.41;ReadPosRankSum=0.212;VQSLOD=4.79;culprit=MQ;DP_HIST=30|3209|1539|1494|30007|7938|4130|2038|1310|612|334|185|97|60|31|25|9|11|7|33,0|66|339|1048|2096|2665|2626|1832|1210|584|323|179|89|54|31|22|7|9|4|15;GQ_HIST=84|66|56|82|3299|568|617|403|250|319|436|310|28566|2937|827|834|451|186|217|12591,15|15|13|16|25|11|22|28|18|38|52|31|65|76|39|83|93|65|97|12397;CSQ=T|ENSG00000186868|ENST00000334239|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS11502.1|ENSP00000334886|TAU_HUMAN|B4DSE3_HUMAN|UPI0000000C16||||2/8||ENST00000334239.8:c.134-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000570299|Transcript|intron_variant&non_coding_transcript_variant||||||rs754512|1||1|MAPT|HGNC|6893|processed_transcript||||||||||2/6||ENST00000570299.1:n.262-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000340799|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS45716.1|ENSP00000340438|TAU_HUMAN||UPI000004EEE6||||3/10||ENST00000340799.5:c.221-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000262410|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS11501.1|ENSP00000262410|TAU_HUMAN||UPI0000EE80B7||||4/13||ENST00000262410.5:c.308-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000446361|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS11500.1|ENSP00000408975|TAU_HUMAN||UPI000004EEE5||||2/9||ENST00000446361.3:c.134-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000574436|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS11499.1|ENSP00000460965|TAU_HUMAN||UPI000002D754||||3/10||ENST00000574436.1:c.308-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000571987|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS11501.1|ENSP00000458742|TAU_HUMAN||UPI0000EE80B7||||3/12||ENST00000571987.1:c.308-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000415613|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS45715.1|ENSP00000410838|TAU_HUMAN||UPI0001AE66E9||||3/13||ENST00000415613.2:c.308-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000571311|Transcript|intron_variant&NMD_transcript_variant||||||rs754512|1||1|MAPT|HGNC|6893|nonsense_mediated_decay|||ENSP00000460048||I3L2Z2_HUMAN|UPI00025A2E6E||||4/4||ENST00000571311.1:c.*176-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000535772|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS56033.1|ENSP00000443028|TAU_HUMAN|B4DSE3_HUMAN|UPI000004EEE4||||4/10||ENST00000535772.1:c.308-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000576518|Transcript|stop_gained|5499|7|3|K/*|Aag/Tag|rs754512|1||1|MAPT|HGNC|6893|protein_coding|||ENSP00000458621||I3L170_HUMAN&B4DSE3_HUMAN|UPI0001639A7C|||1/7|||ENST00000576518.1:c.7A>T|ENSP00000458621.1:p.Lys3Ter|T:0.1171|||||||||15792962|||||POSITION:0.00682261208576998&ANN_ORF:-255.6993&MAX_ORF:-255.6993|PHYLOCSF_WEAK|ANC_ALLELE|LC,T|ENSG00000186868|ENST00000420682|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS45716.1|ENSP00000413056|TAU_HUMAN||UPI000004EEE6||||2/9||ENST00000420682.2:c.221-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000572440|Transcript|non_coding_transcript_exon_variant&non_coding_transcript_variant|2790|||||rs754512|1||1|MAPT|HGNC|6893|retained_intron|||||||||1/1|||ENST00000572440.1:n.2790A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000351559|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS11499.1|ENSP00000303214|TAU_HUMAN||UPI000002D754||||4/11||ENST00000351559.5:c.308-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000344290|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding|YES|CCDS45715.1|ENSP00000340820|TAU_HUMAN||UPI0001AE66E9||||4/14||ENST00000344290.5:c.308-94A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000347967|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding|||ENSP00000302706|TAU_HUMAN|B4DSE3_HUMAN|UPI0000173D91||||4/10||ENST00000347967.5:c.32-100A>T||T:0.1171|||||||||15792962||||||||,T|ENSG00000186868|ENST00000431008|Transcript|intron_variant||||||rs754512|1||1|MAPT|HGNC|6893|protein_coding||CCDS56033.1|ENSP00000389250|TAU_HUMAN|B4DSE3_HUMAN|UPI000004EEE4||||3/9||ENST00000431008.3:c.308-94A>T||T:0.1171|||||||||15792962||||||||
The code that i tried:
awk '{
for (i = 1; i <= NF; i++) {
if ($i ~ /AC|AF/) {
printf "%s %s ", $i, $(i + 1)
}
}
print ""
}'
I keep getting syntax error.
output wanted :
AC=14511;AF=0.137
Whenever you have name=value pairs, it's usually simplest to first create an array that maps names to values (n2v[] below) and then you can just access the values by their names.
$ cat file
AC=1;AC_AFR=2;AF=3 AC=4;AC_AFR=5;AF=6
$ cat tst.awk
{
delete n2v
split($2,tmp,/[;=]/)
for (i=1; i in tmp; i+=2) {
n2v[tmp[i]] = tmp[i+1]
}
prt("AC")
prt("AF")
}
function prt(name) { print name, "=", n2v[name] }
$ awk -f tst.awk file
AC = 4
AF = 6
Just change $2 to $71 for your real input.
Something like this should do it (in Gnu awk due to switch):
$ awk '{split($71,a,";");for(i in a )if(a[i]~/^AF/) print a[i]}' foo
AF=0.137
You split the field $71 by ;s, loop thru the array you split to looking for desired match. For multiple matches use switch:
$ awk '{
split($0,a,";");
for(i in a )
switch(a[i]) {
case /^AF=/:
b=b a[i] OFS;
break;
case /^AC=/:
b=b a[i] OFS;
break
}
sub(/.$/,"\n",b);
printf b
}' foo
AC=14511 AF=0.137
EDIT: Now it buffers output to a variable and prints it in the end. You can control the separator with OFS.

awk | update field number after comparing field from other file

Input File1: file1.txt
MH=919767,918975
DL=919922
HR=919891,919394,919812
KR=919999,918888
Input File2: file2.txt
aec,919922783456,a5,b3,,,asf
abc,918975583456,a1,b1,,,abf
aeci,919998546783,a2,b4,,,wsf
Output File
aec,919922783456,a5,b3,DL,,asf
abc,918975583456,a1,b1,MH,,abf
aeci,919998546783,a2,b4,NOMATCH,,wsf
Notes
Need to compare phone number (Input file2.txt - 2nd field - initial 6 digit only) within Input file1.txt - 2nd field with "=" separted). If there is match in intial 6 digit of phone number, then OUTPUT should contain 2 digit code from file (Input file1) into output in 5th field
File1.txt is having single code (for example MH) for mupltiple phone number intials.
If you have GNU awk, try the following. Run like:
awk -f script.awk file1.txt file2.txt
Contents of script.awk:
BEGIN {
FS="[=,]"
OFS=","
}
FNR==NR {
for(i=2;i<=NF;i++) {
a[$1][$i]
}
next
}
{
$5 = "NOMATCH"
for(j in a) {
for (k in a[j]) {
if (substr($2,0,6) == k) {
$5 = j
}
}
}
}1
Alternatively, here's the one-liner:
awk -F "[=,]" 'FNR==NR { for(i=2;i<=NF;i++) a[$1][$i]; next } { $5 = "NOMATCH"; for(j in a) for (k in a[j]) if (substr($2,0,6) == k) $5 = j }1' OFS=, file1.txt file2.txt
Results:
aec,919922783456,a5,b3,DL,,asf
abc,918975583456,a1,b1,MH,,abf
aeci,919998546783,a2,b4,NOMATCH,,wsf
If you have an 'old' awk, try the following. Run like:
awk -f script.awk file1.txt file2.txt
Contents of script.awk:
BEGIN {
# set the field separator to either an equals sign or a comma
FS="[=,]"
# set the output field separator to a comma
OFS=","
}
# for the first file in the arguments list
FNR==NR {
# loop through all the fields, starting at field two
for(i=2;i<=NF;i++) {
# add field one and each field to a pseudo-multidimensional array
a[$1,$i]
}
# skip processing the rest of the code
next
}
# for the second file in the arguments list
{
# set the default value for field 5
$5 = "NOMATCH"
# loop though the array
for(j in a) {
# split the array keys into another array
split(j,b,SUBSEP)
# if the first six digits of field two equal the value stored in this array
if (substr($2,0,6) == b[2]) {
# assign field five
$5 = b[1]
}
}
# return true, therefore print by default
}1
Alternatively, here's the one-liner:
awk -F "[=,]" 'FNR==NR { for(i=2;i<=NF;i++) a[$1,$i]; next } { $5 = "NOMATCH"; for(j in a) { split(j,b,SUBSEP); if (substr($2,0,6) == b[2]) $5 = b[1] } }1' OFS=, file1.txt file2.txt
Results:
aec,919922783456,a5,b3,DL,,asf
abc,918975583456,a1,b1,MH,,abf
aeci,919998546783,a2,b4,NOMATCH,,wsf
Try something like:
awk '
NR==FNR{
for(i=2; i<=NF; i++) A[$i]=$1
next
}
{
$5="NOMATCH"
for(i in A) if ($2~"^" i) $5=A[i]
}
1
' FS='[=,]' file1 FS=, OFS=, file2

missing field and extra space after using for loop in awk

I need to use an awk script to extract some information from a file.
I have a title line which has 11 field and I split it to an array called titleList.
Student Number:Name:Lab1:Lab2:Lab3:Lab4:Lab5:Lab6:Exam1:Exam2:Final
After finding a proper line I need to print the fields which proceeds by the titles for example if the result is :
92839342:Robert Bloomingdale:9:26:18:22:9:12:25:39:99
I must print it in this way:
Student Number:92839342 Name:Robert Bloomingdale Lab1:9 Lab2:26 Lab3:18
Lab4:22 Lab5:9 Lab6:12 Exam1:25 Exam2:39 Final:99
I use a for loop to manage it:
for (i=0 ;i<=NF ;i++)
{
printf "%s %s %s %s",titleList[i],":",$i," "
}
everything look good except the result which has 2 problems:
first there is an extra space between each result and second the last field of the searched line is missing
Student Number : 92839342 Name : Robert Bloomingdale Lab1 : 9 Lab2 : 26
Lab3:18 Lab4 : 22 Lab5 : 9 Lab6 : 12 Exam1 : 25 Exam2 : 39 Final
what should I do?
is there any problem with \n at the end of the search result?
You can correct the amount of extra whitespace between fields by correcting the printf statement:
awk -F ":" 'NR == 1 { split($0, array, FS) } NR >= 2 { for (i=1; i<=NF; i++) printf "%s:%s ", array[i], $i; printf "\n" }' file.txt
Contents of file.txt:
Student Number:Name:Lab1:Lab2:Lab3:Lab4:Lab5:Lab6:Exam1:Exam2:Final
92839342:Robert Bloomingdale:9:26:18:22:9:12:25:39:99
Results:
Student Number:92839342 Name:Robert Bloomingdale Lab1:9 Lab2:26 Lab3:18 Lab4:22 Lab5:9 Lab6:12 Exam1:25 Exam2:39 Final:99
EDIT:
Also, your missing the last value because the file you're working with probably has windows newline endings. To fix this, run: dos2unix file.txt before running your awk code. Alternatively, you can set awk's record separater so that it understands newline endings:
awk 'BEGIN { RS="\r\n"; FS=":" } NR == 1 { split($0, array, FS) } NR >= 2 { for (i=1; i<=NF; i++) printf "%s:%s ", array[i], $i; printf "\n" }' file.txt
EDIT:
The above requires GNU awk, split() splits on the FS by default so no need to use that as an arg, it's common to use "next" rather than specifying opposite conditions, and it's common to use print "" instead of printf "\n" so you use the ORS setting rather than hard-coding it's value in output statements. So, the above should be tweaked to:
gawk 'BEGIN { RS="\r\n"; FS=":" } NR == 1 { split($0, array); next } { for (i=1; i<=NF; i++) printf "%s:%s ", array[i], $i; print "" }' file.txt

awk Joining n fields with delimiter

How can I use awk to join various fields, given that I don't know how many of them I have? For example, given the input string
aaa/bbb/ccc/ddd/eee
I use -F'/' as delimiter, do some manipulation on aaa, bbb, ccc, ddd, eee (altering, removing...) and I want to join it back to print something line
AAA/bbb/ddd/e
Thanks
... given that I don't know how many of them I have?
Ah, but you do know how many you have. Or you will soon, if you keep reading :-)
Before giving you a record to process, awk will set the NF variable to the number of fields in that record, and you can use for loops to process them (comments aren't part of the script, I've just put them there to explain):
$ echo pax/is/a/love/god | awk -F/ '{
gsub (/god/,"dog",$5); # pax,is,a,love,dog
$4 = ""; # pax,is,a,,dog
$6 = $5; # pax,is,a,,dog,dog
$5 = "rabid"; # pax,is,a,,rabid,dog
printf $1; # output "pax"
for (i = 2; i <= NF; i++) { # output ".<field>"
if ($i != "") { # but only for non-blank fields (skip $4)
printf "."$i;
}
}
printf "\n"; # finish line
}'
pax.is.a.rabid.dog
This shows manipulation of the values, as well as insertion and deletion.
The following will show you how to process each field and do some example manipulations on them.
The only caveat of using the output field separator OFS is that "deleted" fields will still have delimiters as shown in the output below; however it makes the code much simpler if you can live with that.
awk '
BEGIN{FS=OFS="/"}
{
for(i=1;i<=NF;i++){
if($i == "aaa")
$i=toupper($i)
else if($i ~ /c/)
$i=""
else if($i ~ /^eee$/)
$i="e"
}
}1' <<<'aaa/bbb/ccc/ddd/eee'
Output
AAA/bbb//ddd/e
This might work for you:
echo "aaa/bbb/ccc/ddd/eee" |
awk 'BEGIN{FS=OFS="/"}{sub(/../,"",$4);NF=4;print}'
aaa/bbb/ccc/d
To delete fields not at the end use a function to shuffle the values:
echo "aaa/bbb/ccc/ddd/eee" |
awk 'func d(n){for(x=n;x<=NF-1;x++){y=x+1;$x=$y}NF--};BEGIN{FS=OFS="/"}{d(2);print}'
aaa/ccc/ddd/eee
Deletes the second field.
awk -F'/' '{ # I'd suggest to add them to an array, like:
# for (i=1;i<=NF;i++) {a[i]=$i }
# Now manipulate your elements in the array
# then finally print them:
n = asorti(a, dest)
for (i=1;i<=n;i++) { output+=dest[i] "/") }
print gensub("/$","","g",output)
}' INPUTFILE
Doing it this way you can delete elements as well. Note deleting an item can be done like delete array[index].