| Re: IDL batch indexing [message #59254 is a reply to message #59154] |
Thu, 13 March 2008 09:09   |
rkombiyil
Messages: 59
Registered: March 2006
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Member |
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On Mar 11, 4:06 pm, metachronist <rkombi...@gmail.com> wrote:
> On Mar 11, 2:30 pm, Raghu <raghuram.narasim...@gmail.com> wrote:
>
>
>
>> Hi all,
>
>> I am writing a batch processing routine in order to do some querying.
>
>> Steps:
>
>> 1) Read in 30 images ( could be 60 or more..hence using batch)
>
>> Since i am using a file_search method to read in all the files, i want
>> each file to be given a unique name or ID because i need to compare
>> them with each other. So, instead of reading in 30 files separately
>> and assigning variable names to them, i want to do it automatically
>> using a counter in a loop or something like that.
>
>> Eg: if i=0 and numfiles=30,
>> i want to name the first file thats read b1, second file b2, third b3,
>> 30th as b30.
>> Once these are named, i want to be able to compare b1 to b2 or b3 to
>> b5 etc.
>> So, its not just about naming these files since that can be done with
>> a strmid function.
>
>> my idea was something like
>
>> names=file_search(*.img,count=numfiles)
>> while i lt numfiles
>> b[i]=names(i)
>
>> I have tried it and it says b is not defined. I am guessing i cannot
>> name variables dynamically.
>
>> I don't know if i am very clear about my problem.
>> Basically, i want to be able to assign unique variable names to each
>> file thats read so that i can use those unique IDs to query and
>> compare.
>
>> Any ideas ? i can give more information or try to be clearer about my
>> problem if necessary.
>
>> Raghu
>
> this worked for me.
> --
> names=file_search('*.img',count=numfiles)
> b=strarr(numfiles)
> for i=0,numfiles-1 do b[i]=names[i]
> --
> /rk
Well, Reimar is right. I have never used file_search, I always make
rather heavy use spawn along with the *inx "find" command for such
needs. I thought of it only as a programming error, in the sense 'b'
can be defined based on 'numfiles'. Anyway, my mistake, names is
already an array, heh..
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