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Re: quirk End of file encountered before end of program [message #89876 is a reply to message #89867]

Mon, 15 December 2014 07:05

Yngvar Larsen
Messages: 134
Registered: January 2010

Senior Member

On Friday, 12 December 2014 14:38:52 UTC+1, LC's No-Spam Newsreading account wrote:
> On Thu, 11 Dec 2014, Jim P wrote:

>
> The original code I had (dating to several years ago, before anonymous
> structures were introduced) used in fact a much more complex mechanism.
>

Wow. Are you sure? Both named and anonymous structures have been there at least since IDL 4.0 (maybe even from the very beginning?), released several _decades_ ago.

It is usually more fruitful if you describe also what you are trying to achieve instead of only what you tried that didn't work.

http://xyproblem.info

-------------

In your case, I really don't see why you cannot use CREATE_STRUCT(tag1, value1, tag2, value2, ...) directly. After all, you must have all tags and values available as variables in your xxx.pro to do what you tried.

I don't know what the contents of your datafile is. Binary or text? But assuming text, one struct tag/value per line, one struct per datafile, and the existence of a procedure PARSELINE that takes a string (line) as input and returns TAG and VALUE, you can do something like this slightly old fashioned code:

datafile = '/some/file'
openr, unit, datafile, /get_lun
line = ''
init = 0
while ~eof(unit) do begin
readf, unit, line
parseline, line, tag, value
if init eq 0 then begin
struct = create_struct(tag, value)
init = 1
endif else begin
struct = create_struct(tag, value, struct)
endelse
endwhile
free_lun, unit

Should work for very old IDL versions.

--
Yngvar

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[Message index]

		quirk End of file encountered before end of program By: LC's No-Spam Newsread[1] on Thu, 11 December 2014 07:03
		Re: quirk End of file encountered before end of program By: Jim Pendleton on Thu, 11 December 2014 07:45
		Re: quirk End of file encountered before end of program By: LC's No-Spam Newsread[1] on Fri, 12 December 2014 05:38
		Re: quirk End of file encountered before end of program By: lecacheux.alain on Fri, 12 December 2014 06:38
		Re: quirk End of file encountered before end of program By: LC's No-Spam Newsread[1] on Mon, 15 December 2014 03:42
		Re: quirk End of file encountered before end of program By: Yngvar Larsen on Mon, 15 December 2014 07:05
		Re: quirk End of file encountered before end of program By: LC's No-Spam Newsread[1] on Wed, 17 December 2014 02:28
		Re: quirk End of file encountered before end of program By: lecacheux.alain on Wed, 17 December 2014 08:49
		Re: quirk End of file encountered before end of program By: Yngvar Larsen on Wed, 17 December 2014 23:57

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