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Re: read a multi-line string in IDL? or, read numeric values sequentially without automatic <CR>? [message #87410 is a reply to message #87408]

Fri, 31 January 2014 11:33

Phillip Bitzer
Messages: 223
Registered: June 2006

Senior Member

And if you don't know the number of values in the file a priori, you can do this:

file = 'test.txt'
nLines = FILE_LINES(file)
strA = STRARR(nLines) ;define an array to hold the "raw" data

OPENR, lun, file, /GET_LUN
READF, lun, strA ;read in the "raw" data, i.e., the data as it is in the file
FREE_LUN, lun

strJ = STRJOIN(strA) ;join all the data to one line

nVal = N_ELEMENTS(STRSPLIT(strJ)) ;number of values

arr = FLTARR(nVal) ;an array to hold the numbers

READS, strJ, arr ;read 'em in

cgPlot, arr ;or whatever

Notice that this does not give the same number of elements that you provide. For example, I get 230 values....

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[Message index]

		read a multi-line string in IDL? or, read numeric values sequentially without automatic <CR>? By: pcoelho.astro on Fri, 31 January 2014 11:00
		Re: read a multi-line string in IDL? or, read numeric values sequentially without automatic <CR>? By: Lajos Foldy on Fri, 31 January 2014 11:20
		Re: read a multi-line string in IDL? or, read numeric values sequentially without automatic <CR>? By: David Fanning on Fri, 31 January 2014 11:25
		Re: read a multi-line string in IDL? or, read numeric values sequentially without automatic <CR>? By: Phillip Bitzer on Fri, 31 January 2014 11:33
		Re: read a multi-line string in IDL? or, read numeric values sequentially without automatic <CR>? By: paulartcoelho on Wed, 19 February 2014 04:33

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