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Using MIN on arrays : Exorcising loops? [message #27061]

Fri, 05 October 2001 04:18

A. D. & J.C. Cool
Messages: 16
Registered: February 2000

Junior Member

Hi all,

I have three slabs of data [640,500] held as an array [640,500,3].

I need to populate another 2D array [640,500] with the minimum
value for every x,y coordinate found in the first 3 arrays.

At the moment my code loops something like this :-

data_array = Fltarr(640,500,3)
Min_array = Fltarr(640,500)

For x = 0,639 Do Begin
For y = 0,249 Do Begin
Min_array(x,y) = MIN(data_array(x,y,*))
End
End

There's gotta be a better way, surely? Some syntax variant on MIN?
Histogram even? ;-)

TIA,

Andrew Cool
Defence Science & Technology Organisation
Adelaide, Oz.
andrew.cool@dsto.defence.gov.au

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