| Breaking files [message #70883] |
Thu, 13 May 2010 14:05  |
fgg
Messages: 67
Registered: April 2010
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Member |
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Hello,
I have a code that is designed to read and process text files with
this format:
=xxx
id = 1
a = ...
b = ...
c = ...
It starts by reading the data in using file_lines and a string array:
infile = '/path/filename'
n = file_lines(infile)
data = strarr(n)
openr, inunit, infile, /get_lun
readf, inunit, data
... and ends by exporting stuff to another text file.
Now I need to deal with input text files that have a slightly
different format:
=xxx
id = 1
a = ...
b = ...
c = ...
=xxx
id = 2
a = ...
b = ...
c = ...
=xxx
id = 3
a = ...
b = ...
c = ...
They are just multiple files appended together. I was wondering if
there is a simple way of breaking this new big file into multiple
files with the old format so I don't have to change my code
considerably (maybe using the "=xxx" lines to indicate where each file
starts).
Sorry if this is too obvious. I'm new to IDL.
Thank you.
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| Re: Breaking files [message #70983 is a reply to message #70883] |
Mon, 17 May 2010 11:37  |
fgg
Messages: 67
Registered: April 2010
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Member |
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> All you do is pick out the data you want.
>
> these = [where(stregex(data_array,'=xxx',/
> boolean),nthese),n_elements(data_array)-1]
> for i=0L,nthese-1 do begin
> these_data = data_array[these[i]:these[i+1]]
> ;operate on these_data
> ...
> endfor
This is all I needed to finish the script! Thank you, Gray.
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| Re: Breaking files [message #71013 is a reply to message #70883] |
Fri, 14 May 2010 14:18 |
Gray
Messages: 253
Registered: February 2010
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Senior Member |
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On May 14, 4:31 pm, fgg <fabioguimaraesgoncal...@gmail.com> wrote:
> Thanks for the suggestions. I can use WHERE to flag the those lines...
> I'm just not really sure how to create a loop to run the entire script
> for the first block of lines, then for the second and so one.
>
> I use a Mac so I probably have the split utility. I'll take a look.
> Thanks!
All you do is pick out the data you want.
these = [where(stregex(data_array,'=xxx',/
boolean),nthese),n_elements(data_array)-1]
for i=0L,nthese-1 do begin
these_data = data_array[these[i]:these[i+1]]
;operate on these_data
...
endfor
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