| Re: Extracting variables from ascii files that are not in columnar format [message #70382] |
Fri, 09 April 2010 13:31 |
Gray
Messages: 253
Registered: February 2010
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Senior Member |
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On Apr 9, 3:51 pm, Gray <grayliketheco...@gmail.com> wrote:
> 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)'
Oops, forgot /extract in the 2nd strsplit call. Also, you may need to
strtrim n for the format codes.
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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
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Senior Member |
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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 [message #70384 is a reply to message #70383] |
Fri, 09 April 2010 12:21 |
natha
Messages: 482
Registered: October 2007
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Senior Member |
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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
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