Hi, Not sure if this will help, but, if you're just looking for where SSTs are a certain value, you can just use an 'IF' statement without the need for looping. e.g. Create a variable that contains the SST if SST < 10C, and -999 if not: use coads_climatology let sst_limited = if sst lt 10 then SST else (-999) !Just keep SSTs that are less than 10C shade/lev=(-2,10,1) sst_limited[l=1] shade/over/palette=black/lev=(-999) sst_limited[l=1] !Black out unwanted SSTs (No idea why you'd do this particular example!) ...You can get more sophisticated with masking etc (e.g. using SSTs to mask some other variable) - see the user guide for more on this. Hope this helps, Paul On Sep 29, 2010, at 9:41 AM, K Wheel wrote: |