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Re: reading in | delimited files into multiple arrays [message #49019 is a reply to message #49003]

Fri, 09 June 2006 09:30

Jo Klein
Messages: 54
Registered: January 2006

Member

> How do you read in a | delimited file in to multiple arrays, one for
> each column of the data?

I guess there are many ways to do this - how about splitting each line
using strsplit? Is the number of columns per line fixed? You could for
example first find out the number of lines to process using FILE_LINES,
then provide an array for intermediate storage:

number_of_columns=5
myfile='something.txt'
n=file_lines(myfile)
arr=make_array(5,n,/STRING)
openr,unit,myfile,/get_lun

for i=0,n-1 do BEGIN
readf,unit,line
arr[*,i]=strsplit(line,'|',/extract)
endfor
close,unit
free_lun,unit

Then, you can reform this into individual arrays, eg.:

secondcolumn=reform(arr[1,*])

Haven't tested this, but give it a try.
Cheers,
Jo

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[Message index]

		Re: reading in \| delimited files into multiple arrays By: Marshall Perrin on Sat, 10 June 2006 10:45
		Re: reading in \| delimited files into multiple arrays By: Jo Klein on Fri, 09 June 2006 09:30
		Re: reading in \| delimited files into multiple arrays By: David Fanning on Fri, 09 June 2006 09:29

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