Economics should be open

November 17, 2008

perl script for transposing Stata outreg2 output

Filed under: coding, Data Insights, Stata — Tags: , , — howardchong @ 10:38 pm

I’m using Stata’s outreg2 command and love it. But I run this look over 600 stocks. Excel doesn’t allow me to view 600 columns (Except in the newer version).  So, I need to transpose the outreg2 file. It’s too wide. Too many columns.

My former post on someone else’s perl script (https://opensourceeconomics.wordpress.com/2008/10/02/perl-script-for-transposing-csv/) actually doesn’t work correctly. I had to make two modifications, and the result is the perl script downloadable from here:

http://are.berkeley.edu/~chong/filesforblog/transpose_tsv_hc.pl

The two modifications are that 1) files are saved with tabs rather than commas. No big deal, I just changed the split operator and 2) the original script freaked out when there were blanks in the data. All blanks are ignored.

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October 2, 2008

perl script for transposing csv

Filed under: coding, Data Insights — Tags: , — howardchong @ 12:05 am

 

 

I needed to tranpose a 600×5 csv (comma separated values) file so I could read it in Excel 2003.

Found what I needed here: http://biowhat.com/2007/01/14/getting-the-transpose-of-a-csv/

However, I did need to modify the code one bit. See the discussion below

 

Thanks for the script.

Just a comment though. You have the if condition:
elsif ($AoA[$j][$i] eq “”){
print RESULT “\n”;
last;

this ignore that all elements past j in $AoA[$j][$i].

That is, if you have any missing values that are coded as blanks, this imposes that blanks are afterwards. I think this is probably good for your dataset (you have streams of observations of different lengths (?))

Since my data has missing observations coded as blanks, I’m gonna remove this elseif condition.

As an example

a csv file with one line:
1, 2, 3, 4, 5, , 7, 8, 9

would be transposed to:
1
2
3
4
5

and the values after the blank would get dropped off.

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