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index arrays of structures [message #59229]

Sat, 15 March 2008 13:53

raghuram
Messages: 32
Registered: February 2008

Member

Hi,

With reference to my recent posting (IDL batch indexing), i understood
that i could structures. However, i haven't been able to figure out
one step.

Here is my code as of now:
; I want to search for all the images(files) in the directory trials,
read them into the structure named data, and access each file within
the structure.

pro strcutres
dir1='D:\trials'
cd,dir1
files=FILE_SEARCH('*[^\.{hdr}]', /QUOTE,count=numfiles)
i=0
while i lt numfiles do begin
named=files(i)
print,named
data={ID:'a',sizes:fltarr(2179,761)}
data=replicate(data,numfiles)
data.sizes=findgen(numfiles)
openr,1,named
readu,1,data[i].sizes
close,1
i=i+1
endwhile
end

ERROR message- READU: Expression must be named variable in this
context: <FLOAT Array[2179, 761]>.

I am getting the error here because it seems like i am not able to
read in the LUN 1 or named, into data[i].sizes.

Where am i going wrong ?

Raghu

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[Message index]

		index arrays of structures By: raghuram on Sat, 15 March 2008 13:53
		Re: index arrays of structures By: raghuram on Mon, 17 March 2008 13:31
		Re: index arrays of structures By: R.G. Stockwell on Mon, 17 March 2008 10:57
		Re: index arrays of structures By: raghuram on Mon, 17 March 2008 09:29
		Re: index arrays of structures By: David Fanning on Mon, 17 March 2008 08:03
		Re: index arrays of structures By: R.Bauer on Mon, 17 March 2008 07:44
		Re: index arrays of structures By: Vince Hradil on Sun, 16 March 2008 12:29
		Re: index arrays of structures By: raghuram on Sun, 16 March 2008 12:19

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