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Re: Loop through arrays with different names [message #55177 is a reply to message #55088]

Thu, 02 August 2007 05:57

mattf
Messages: 13
Registered: January 2007

Junior Member

On Aug 1, 8:04 pm, hazel <hazel.ken...@gmail.com> wrote:
> Hello,
>
> I have a really simple problem that always happens when I starting
> trying to use strings..
>
> I want to loop through a series of arrays, each with a slightly
> different name (det1arr(n,3), det2arr(n,3), det3arr(n,3)..etc..) and
> subject each to the same function:
>
> a quick outline is:
>
> for j=1,8 do begin
>
> for i=0, n-1 do begin
>
> vx=det1arr(i, 0) ; where the 1 is effectively the value of 'j'
> vy=det1arr(i, 1)
> vz=det1arr(i, 2)
>
> result(i,j)=some_function(vx, vy, vz)
>
> endfor
>
> So can I do something like: vx=det+j+arr(i,0)? (Only that clearly
> won't work)? There must be a way? Otherwise I can reload all my
> different arrays into one array I realise and just loop through that.
>
> I'm sure it's something painfully simple and for that I apologise, but
> it is the end of the day (for me anyway),
>
> Thanks,
>
> Hazel

A somewhat more flexible approach is to collect the similar variables
into a struct:

det_struct = {d1:det1arr, d2:det2arr, ...}

and then do a for-loop over the struct's fields

n_fields = n_tags(det_struct)
for ix_struct = 0, n_fields-1 do begin
current_field = det_struct.(ix)
for ix_var = 0, n do begin
-- do whatever here --
endfor
endfor

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[Message index]

		Loop through arrays with different names By: hazel on Wed, 01 August 2007 17:04
		Re: Loop through arrays with different names By: hazel on Thu, 02 August 2007 08:55
		Re: Loop through arrays with different names By: greg.addr on Thu, 02 August 2007 06:27
		Re: Loop through arrays with different names By: mattf on Thu, 02 August 2007 06:00
		Re: Loop through arrays with different names By: mattf on Thu, 02 August 2007 05:57
		Re: Loop through arrays with different names By: Foldy Lajos on Thu, 02 August 2007 00:03
		Re: Loop through arrays with different names By: MarioIncandenza on Wed, 01 August 2007 19:09

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