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Cut down a big file into several files based on its a column. [message #53012]

Tue, 13 March 2007 18:22

kim20026
Messages: 54
Registered: November 2006

Member

Good day, everyone! (I wrote 'Good morning', but maybe it is not
morning for others. anyway) I would like to slice a big data file
into several files based on its a column, but it was not successful
yet. Please give me some suggestions.

The contents of my original data file are...

90|2000|1|1|95|95|95|95|95|96|95|95|94|93|93|93|94|94|94|95| 95|93|91|
90|94|95|96|95|
90|2000|1|2|96|95|94|96|93|93|76|74|76|81|85|84|76|53|43|40| 39|41|33|
33|32|32|33|35|
90|2000|1|3|35|34|38|35|29|28|30|29|26|23|25|22|22|30|29|24| 23|24|36|
31|34|39|31|34|
.
.
.

This is a 2-dim array, I named this array as 'data(*, *)'.

What I want to do now is to slice this file into 6 files based on the
information in 2nd column, ( data(1,*) ). This column includes year
info, and the values are from 2000 to 2006.

I tried this way so far.

pro hum_year
; 1. Read orignial file, and designate the initial values of
variables and arrays.

file='hum.txt'
ndata=file_lines(file)
data=intarr(28, ndata)

; 2. Close any unit files before processing.
close,1
close,2
close,3
close,4
close,5
close,6

; 3. Open files and prepare for writing.
openw,1,'HumNWS_2000.txt'
openw,2,'HumNWS_2001.txt'
openw,3,'HumNWS_2002.txt'
openw,4,'HumNWS_2003.txt'
openw,5,'HumNWS_2004.txt'
openw,6,'HumNWS_2005.txt'

; 4. Classify data and write them into designated file.

for t=0L,ndata-1 do begin

case data[1,t] of
2000:printf,1,format='(28i6)',data[*,t]
2001:printf,2,format='(28i6)',data[*,t]
2002:printf,3,format='(28i6)',data[*,t]
2003:printf,4,format='(28i6)',data[*,t]
2004:printf,5,format='(28i6)',data[*,t]
2005:printf,6,format='(28i6)',data[*,t]
endcase

endfor

; 5. Close files.
close,1
close,2
close,3
close,4
close,5
close,6

end
----------------------

However, compile stops process 2 everytime. I don't understand. Do I
have do something to treat the '|'s in original file? Please give me
any suggestions and comments. Thank you in advance.

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[Message index]

		Cut down a big file into several files based on its a column. By: kim20026 on Tue, 13 March 2007 18:22
		Re: Cut down a big file into several files based on its a column. By: Maarten[1] on Fri, 16 March 2007 08:54
		Re: Cut down a big file into several files based on its a column. By: Maarten[1] on Fri, 16 March 2007 08:34
		Re: Cut down a big file into several files based on its a column. By: Peter Clinch on Fri, 16 March 2007 03:24

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