There's a much easier way. The Statistics module computes min and max directly. Also, if you have the series available (i.e., you import it as a series rather than as a set of individual files) you can just pass the series directly to the "min" input of Autocolor and it will do exactly what you want it to do.
(btw for future reference, if you *wanted* to find the min or max of the set of data elements, you would do ForEachMember on the *data array*, and as you thought, use GetGlobal and SetGlobal to cache the current min or max. But generally this is a rather slow way to do things and should certainly be avoided if there are easy alternatives, as there are here) Donna _________________________________ Donna L. Gresh, Ph.D. Visual Analysis Group IBM T.J. Watson Research Center (914) 784-5049 [EMAIL PROTECTED] Trevor Wood <[EMAIL PROTECTED]> on 08/14/2000 04:35:11 PM Please respond to [email protected] To: [email protected] cc: Subject: [opendx-users] Compute min and max Hi all. I'm new to OpenDX and am trying to figure out how to use the compute tool to calculate the min and max values of the data array to use in AutoColor. Basically, I have a series of surface data and I would like to determine a fixed colormap so that the ColorBar will remain unchanged as the sequencer plays. I was thinking that I could pipe the series through ForEachMember then through Compute with the expression "min(a,b)" where `b' is somehow saved from the previous iteration (using GetLocal and SetLocal perhaps?). However, it appears that min(a) works on an element-by-element basis instead of finding the minimum value of the entire data array. Any insights would be greatly appreciated. Trevor
