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Re: Extracting variables from ascii files that are not in columnar format [message #70383 is a reply to message #70382]

Fri, 09 April 2010 12:51

Gray
Messages: 253
Registered: February 2010

Senior Member

On Apr 9, 3:21 pm, nata <bernat.puigdomen...@gmail.com> wrote:
> I'll try something like that
>
> aux=''
> OPENR, un$lun, file, /GET_LUN
>
> WHILE ~EOF(un$lun) DO BEGIN
>
> READF, un$lun, aux
>
> aux_str=STRSPLIT(aux,' ',/EXTRACT)
>
> PRINT, 'label', aux_str[0:1]
> PRINT, 'values', aux_str[2:*]
>
> ;; Then you can concatenate, etc...
>
> ENDWHILE
>
> FREE_LUN, un$lun

Or, you can read everything at once with file_lines and a string
array, then loop through the array and strsplit. If you know that
every line has the same format, you can use astrolib's gettok to pick
out the header names. Printing in columns like that is a little more
complicated, and requires padding. Example:

n = file_lines(file)
data = strarr(n)
heads = strarr(n)
openr, unit, file, /get_lin
readf, unit, data
close, unit & free_lun, unit
heads = gettok(data,'=')
print, heads, format='('+n+'A12)'
lens = intarr(n)
for i=0L,n-1 do lens[i] = n_elements(strsplit(data[i],/regex))
npad = max(lens)
padded_data = strarr(n,npad)
for i=0L,n-1 do padded_data[i,0] = strsplit(data[i],/regex)
print, transpose(padded_data), format='('+n+'A12)'

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		Re: Extracting variables from ascii files that are not in columnar format By: Gray on Fri, 09 April 2010 13:31
		Re: Extracting variables from ascii files that are not in columnar format By: Gray on Fri, 09 April 2010 12:51
		Re: Extracting variables from ascii files that are not in columnar format By: natha on Fri, 09 April 2010 12:21

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