Hi Zatuch, You need to put brackets around each individual level. E.g., for what you want: lev=(20)(40)(60)(100)(150)(250)(750)(1750) You could also have something like: lev=(20,60,20)(100)(150)(250)(750)(1750) i.e. including a (lo,hi,delta) _expression_ as well. But, in your case, that's not really worth it. P On Feb 12, 2009, at 12:22 PM, z z wrote: Hello, Ferret Users, ----- Paul Young Chemistry and Climate Processes Chemical Sciences Division NOAA Earth System Research Laboratory 325 Broadway R/CSD8 Boulder CO 80305-3328 USA Tel: +1 303-497-4711 Fax: +1 303-497-5686 Email: paul.j.young@xxxxxxxx |