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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Attached is the entire script and the output. The output “CONSTANT FIELD. VALUE -0”.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoPlainText><span style='font-family:"Courier New"'>'reinit'<br>'sdfopen http://monsoondata.org:9090/dods/gfsens/gfsens.2013020200'<br>'set lat -60 0'<br>'set lon -30 60'<br><br>'set z 3'<br><br>'set gxout shaded'<br>'define t=t+273'<br><br>'define es1=611*exp((2.5e6/461)*((1/t(z+1))-(1/273)))'<br>'define qs1=0.622*es1/(lev-es1)'<br><br>'define es2=611*exp((2.5e6/461)*((1/t(z-1))-(1/273)))'<br>'define qs2=0.622*es2/(lev-es2)'<br><br><br>'define dq=(qs1-qs2)/(lev(z+1)-lev(z-1))'<br><br>'d dq'<br><br>'cbarn 1.0 0 5.5 0.3'<br>'printim AA.gif gif -x1400 -y1200 white'<br>'quit'<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Help highly appreciated.<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Regards<o:p></o:p></span></p><p class=MsoPlainText><span style='font-family:"Courier New"'>Morwakoma</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>