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Re: For loop - Question [message #89991 is a reply to message #89989]

Tue, 13 January 2015 06:46

Yngvar Larsen
Messages: 134
Registered: January 2010

Senior Member

On Tuesday, 13 January 2015 15:02:48 UTC+1, g.na...@gmail.com wrote:
> Hi
>
> I create a for loop to store my Data in a 3D array [100,200,200]. Then I used my data array to calculate another matrix B as shown below:
>
> for i=0, 99 do begin
> ArrayData = C:\Users\..
> endfor

I assume you mean something like this:

ArrayData = fltarr(100,200,200)
for i=0,99 do ArrayData[i,*,*] = my_get_data_from_file_function(file[i])

assuming that all the files contain data of the same size (200 x 200).

> B = total(ArrayData[0:4,*,*],1)/5.

This is the average of the first 5 images. Is this what you want?

> A question that I have is once I used the ArrayData outside the for loop does it contains all the elements of the array or just those on the place [100,120,120]?

I'm not really sure what you are asking about? ArrayData contains the elements you read into it in your loop. In the pseudocode you posted, it looks like you overwrite the array on each iteration in the loop. This is likely not what you want.

--
Yngvar

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[Message index]

		For loop - Question By: g.nacarts on Tue, 13 January 2015 06:02
		Re: For loop - Question By: Mats Löfdahl on Tue, 13 January 2015 06:44
		Re: For loop - Question By: Yngvar Larsen on Tue, 13 January 2015 06:46
		Re: For loop - Question By: g.nacarts on Tue, 13 January 2015 07:14
		Re: For loop - Question By: g.nacarts on Tue, 13 January 2015 07:16
		Re: For loop - Question By: Yngvar Larsen on Wed, 14 January 2015 00:55

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