Hi All, I am trying to execute some code (see at bottom) to regrid data that is on a sigma vertical axis onto a grid that is on a depth coordinate and am getting the error: **ERROR: variable unknown or not in data set: DEPTHVALUES[X=@MIN,Y=@MIN,Z=@MIN,T=@MIN] cancel region/z let sig = z[gz=u] let depthValues = sig * ( depth + zeta ) LET zmin = `depthValues[x=@min,y=@min,z=@min,t=@min]` LET zmax = `depthValues[x=@max,y=@max,z=@max,t=@max]` define axis/z=`zmin`:`zmax`:10/units=meters/depth zdepth let var1OnDepth = zaxreplace(u,depthValues,z[gz=zdepth]) let var1IsOnZ = "true" Command file, command group, or REPEAT execution aborted . Any suggestions why Ferret doesn't recognize DEPTHVALUES? Regards, John IF `strcmp("($theVar1)", "XX") ne 0.0` THEN \ (if `strcmp("($3)","temp") eq 0.0 or strcmp("($3)","salt") eq 0.0 or strcmp("($3)","u") eq 0.0 or strcmp("($3)","v") eq 0.0` then \ cancel region/z \ let sig = z[gz=$3] \ let depthValues = sig * ( depth + zeta ) \ LET zmin = `depthValues[x=@min,y=@min,z=@min,t=@min]` \ LET zmax = `depthValues[x=@max,y=@max,z=@max,t=@max]` \ define axis/z=`zmin`:`zmax`:10/units=meters/depth zdepth \ let var1OnDepth = zaxreplace($3,depthValues,z[gz=zdepth]) \ let var1IsOnZ = "true" \ else \ let var1IsOnZ = "false" \ endif) \ endif |