I can read whole rows of table using this:
myexcel = pd.ExcelFile("my_Excel.xlsx")
my row = myexcel.parse(2, skiprows=14, skipfooter= 2).dropna(axis=1, how='all')
Using this and some additional params I could read a single specific cell value. But is it possible to just read this single cell from sheet by providing just cell coordinates(let's say cell('J10'))?
UPDATE
I would like to get a solution using pd.ExcelFile if possible...
Related
I have a UserForm that finds and copies a range of data and pastes it along with new data from the UserForm into a different sheet. I am wanting for it to also count the number of times some of that data is repeated in the new sheet. I have tried several different approches but none are working. Right now this is what I have:
.Range("I1").Value = iVal = Application.WorksheetFunction.CountIf(Range("A3:A103"), "CrisisNameTextBox1.Value")
This puts "TRUE" in the corresponding cell instead of the number of times the data is repeated.
You probably could use this function in the corresponding cell:
=COUNTIF( [range], [cell] )
The [range] is the range you want to check (use $ to make sure its value does not change from one cell to another)
The [cell] is the cell you are currently checking.
Assign the function to the cells you want and it should work
If you want to drag/copy this formula from one cell to an other : use the $ character to lock the coordinates you don't want to be changed. I.e :
$A1 Will prevent the column from being changed, but will allow the row
A$1 Will prevent the row from being changed, but will allow the column
$A$1 Will prevent both coordinates from being changed
The same applies to ranges ($A1:$F15, $A1:F1, $A$1:F15, A1:$F15, etc.)
I have close to zero knowledge in excel and vba.
What I'm trying to do the the following:
for each row in ActiveSheet.ListObjects("SheetPotatoData")
if cell (column 5):(row) value equals "potato"
do something with (column 2):(row)
I would really appreciate it if you could enlighten me on the proper syntax to do this.
Thank you very much!
Look here: http://www.excel-easy.com/vba/range-object.html
For i = 1 To ActiveSheet.ListObjects("TableNameHere").ListRows.Count
If Cells(i,5).Value = "potato" Then
Cells(i,2).Value = "New value"
End If
Next
Alternatively, just add ".DataBodyRange.Rows" to the end of the first line in your line "For... Each" structure. You're asking VBA to iterate through each Row in a ListObject, rather each Row in the collection of Rows contained within the ListObject.
That allows sticking with the more elegant, readable, and reliable 'For...Each' structure rather than fetching range bounds and traversing it using counters. Using the DataBodyRange property of the list allows you to automatically handle any Header rows that may be present and not include them in your row inspection loop. You can reference the ListObject.Rows collection instead if you want Headers included.
Final code would look something like:
For Each row In ActiveSheet.ListObjects("SheetPotatoData").DataBodyRows.Rows
if row.Cells(1,5) = "potato"
'Do something
End If
Next
i need to get multiple column names (header) in table associated with particular value in to a cell
as i explained, i need to get the heading names corresponding to value "n" to column E.
i used the formula
=INDEX((A$1:D$1),MATCH("n",A2:D2,0))
here. but it only give one column name.
i am open to vba scripts also. but i think it doesn't need vba. just improve the the above formula, may be. i tried and failed. any help. thank you guys
if you are really "open" to vba, I'll use one simple UDF like:
Function HeatherNames(rg As Range, rf As String) As String
For Each cell In rg
If cell = rf Then HeatherNames = HeatherNames & Cells(1, cell.Column).Value & "-"
Next cell
HeatherNames = Left(HeatherNames, Len(HeatherNames) - 1)
End Function
you can use it in the column E `=HeatherNames(A2:D2;"n") now you can select the arg.1 (range) and type (or referring to another cell) the arg.2
Assuming you have Excel 2010 or later, in E2:
=IF(COLUMNS($A:A)>COUNTIF($A2:$D2,"n"),"",INDEX($1:$1,AGGREGATE(15,6,COLUMN($A2:$D2)/($A2:$D2="n"),COLUMNS($A:A))))
Copy to the right and down as required.
It would actually be slightly more efficient (and certainly if your dataset in reality is quite large) to have the initial IF clause held within its own cell, such that it is calculated for each row only once, rather than for each instance of the formula within that row. So a better set-up would be, in E2:
=COUNTIF($A2:$D2,"n")
copied down. Then, in F2:
=IF(COLUMNS($A:A)>$E2,"",INDEX($1:$1,AGGREGATE(15,6,COLUMN($A2:$D2)/($A2:$D2="n"),COLUMNS($A:A))))
copied to the right and down again.
Regards
Right now I have a macro that loops through a worksheet that contains data about different machine parts performs various actions on another worksheet using that data. Now I want it to add each part number to a column in a third worksheet, but only if it doesn't already exist there. Here is my code for adding the part numbers:
Rows("1:1").Insert Shift:=xlDown
Range("A1").Value = cpn
I have the list spoted after each added part number. Is there any way better than a loop to find out if the part number already exists?
You could use the COUNTIF method. Just like this:
Application.CountIf(Range("A:A"), valueThatYouWantToSearchFor)
It will return the number of cells that contains this value.
I am a little stuck at the moment. I am working on an array of data and need to find a way to input column numbers into formulas.
-I have used the match function to find the corresponding column number for a value.
ex. "XYZ" matched with Column 3, which is equivalent to C1:Cxxxxxx
-now for inputing the C1:Cxxxxxx into a formula to get data for that particular column, I would like to be able to directly reference the Column 3 part, because I plan on using this workbook in the future and the column needed to run the calculation may or may not be column 3 the next time I use it.
- is there any way to tell excel to use a formula to tell excel which column to use for an equation?
so a little more detail, I have the equation
=AND(Sheet3!$C$1:$C$250000=$A$4,Sheet3!$B$1:$B$250000=$B$4)
instead of specifying to use column C, is there a way to use a formula to tell it to use C?
EDIT: more additional info;
"i am basically running the equivalent of a SQL where statement where foo and bar are true, I want excel to spit out a concatenated list of all baz values where foo and bar are true. ideally i would like it to ONLY return baz values that are true, then I will concat them together separately. the way I got it now, the expression will test every row separately to see if true; if there is 18K rows, there will be 18K separate tests.. it works, but it's not too clean. the goal is to have as much automated as possible. *i do not want to have to go in and change the column references every time I add a new data arra*y"
Thanks
You can use INDEX, e.g. if you have 26 possible columns from A to Z then this formula will give you your column C range (which you can use in another formula)
=INDEX(Sheet3!$A$1:$Z$250000,0,3)
The 0 indicates that you want the whole column, the 3 indicates which column. If you want the 3 can be generated by another formula like a MATCH function
Note: be careful with AND in
=AND(Sheet3!$C$1:$C$250000=$A$4,Sheet3!$B$1:$B$250000=$B$4)
AND only returns a single result not an array, if you want an array you might need to use * like this
=(Sheet3!$C$1:$C$250000=$A$4)*(Sheet3!$B$1:$B$250000=$B$4)
You could use ADDRESS to generate the text, you then need to use INDIRECT as you are passing a string rather than a range to the fomula
=AND(INDIRECT(ADDRESS(1,3,,,"Sheet3") & ":" & ADDRESS(250000,3))=$A$4
,INDIRECT(ADDRESS(1,2,,,"Sheet3") & ":" & ADDRESS(250000,2))=$B$4)
Obviously replace the 3s and 2s in the ADDRESS formulae with your MATCH function you used to get the column number. The above assumes the column for $B$1:$B$25000 is also found using `MATCH', otherwise it is just:
=AND(INDIRECT(ADDRESS(1,3,,,"Sheet3") & ":" & ADDRESS(250000,3))=$A$4
,Sheet3!$B$1:$B$25000=$B$4)
Note a couple of things:
You only need to use "Sheet3" on the first part of the INDRECT
Conditions 3 and 4 in the ADDRESS formula are left as default, this
means they return absolute ($C$1) reference and are A1 style as
opposed to R1C1
EDIT
Given the additional info maybe using an advanced filter would get you near to what you want. Good tutorial here. Set it up according to the tutorial to familiarise yourself with it and then you can use some basic code to set it up automatically when you drop in a new dataset:
Paste in the dataset and then use VBA to get the range the dataset uses then apply the filter with something like:
Range("A6:F480").AdvancedFilter Action:=xlFilterInPlace, CriteriaRange:= _
Sheets("Sheet1").Range("A1:B3"), Unique:=False
You can also copy the results into a new table, though this has to be in the same sheet as the original data. My suggestion would be paste you data into hidden columns to the left and put space for your criteria in rows 1:5 of the visible columns and then have a button that gets the used range for your data, applies the filter and copies the data below the criteria:
Range("A6:F480").AdvancedFilter Action:=xlFilterCopy, CriteriaRange:=Sheets _
Range("H1:M3"), CopyToRange:=Range("H6"), Unique:=False
Button would need to clear the destination cells first etc, make sure you have enough hidden columns etc but it's all possible. Hope this helps.