begin fname = "$NCARG_ROOT/lib/ncarg/data/cdf/uv300.nc" f = addfile(fname,"r") u = f->U(:,:,{82}) ; Read "U" off the file wks = gsn_open_wks ("png","xy2f") res = True res@xyDashPatterns = (/5,8/) ; Dashed patterns res@xyLineColors = (/"ForestGreen","NavyBlue"/) res@xyLineThicknesses = (/3,6.5/) ; 3x and 5x thicker res@tmXBMode = "Explicit" ; Explicitly label X axis res@tmXBValues = (/-90,-45,0,45,90/) ; Locations of desired tickmarks ; Labels at each tick mark res@tmXBLabels = (/"90~S~o~N~S","45~S~o~N~S","0","45~S~o~N~N","90~S~o~N~N"/) res@tmXBMinorOn = False ; Turn off minor ticks plot = gsn_csm_xy (wks,u&lat,u,res) ; Draw an XY plot end