| Re: IDL batch indexing [message #59150 is a reply to message #59148] |
Tue, 11 March 2008 05:49   |
fergason
Messages: 3
Registered: March 2008
|
Junior Member |
|
|
In article <b0bd3b46-ab67-4216-b3ff-dfbd88535fcb@s37g2000prg.googlegroups.com>,
Raghu <raghuram.narasimhan@gmail.com> writes:
> 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
Hi,
I think I know what you want - and it's something that I have to do too.
You could try using execute:
in your loop, read each file in as "infile" then
res=execute(b[i]+'=infile')
In the end you'll have a variable for each value of b[i].
The other way to go, if all of the files have the same format, would be to use
a structure like:
alldata=replicate({name:a,data:fltarr(100,100)},numfiles)
where you just replace the "fltarr(100,100)" bit with whatever your data looks
like - you could even have it check the first file to figure the format on it's
own.
Then in your loop you just read into alldata[i].data
Bev
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
