[daip] subim limitation

[Eric Greisen]

Lawrence Rudnick wrote:
> Your question is tricky, and suggests that perhaps we'd be better off 
> not doing anything?
> 
>    Here's the deal -- when y and z are both spatial coordinates, then 
> i'd want to make the same choice of opc, (which i always set to ave), so 
> i'd have xinc of 1 (freq axis) and yinc and zinc of n (and have them do 
> average)  however, suppose x and y are spatial and z is frequency.  I 
> might want to make a different choice.  in that case, I would be better 
> off doing subim in two steps.
> 
> xinc*yinc*zinc, full average, makes sense to me as a default, and if i 
> didn't want to do that, i'd have to do partial subims.  treating zinc 
> differently than xinc and yinc would almost certainly create confusion.
> 
> given this, i'm almost tempted to say just leave it as is. perhaps try 
> out the question on others?

A corrected SUBIM with ZINC option (which averages or max/min over X, Y, 
and Z) has been put back.  Tomorrow's MNJ will get it.

Eric Greisen