Perhaps I haven't tried enough (which is often the case!) but I'm wondering if it's possible to have a GO script with a conditional based on the value of an argument. Something like: if $3 eq "yz" then plot xxx go land else if $3 eq "ab" then plot yyy go land end Thanks! -- Gary Strand strandwg@ucar.edu http://www.cgd.ucar.edu/ccr/gary