<div dir="ltr">Output of wrf_nogsn_4.ncl is attached, no map overlay.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 26, 2021 at 9:55 AM Zilore Mumba <<a href="mailto:zmumba@gmail.com">zmumba@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>I have a basic problem that the scripts in wrf_gsn and wrf_nogsn do not overlay maps. I paste below the script for wrf_nogsn_4.ncl. I have tried to put some resources like res@cnFillDrawOrder = "PreDraw" and other related resources (commented out in the attached text). These have no effect.</div><div>I wonder if the map overlay works in these scripts.</div><div>Thanks.<br></div><div>;----------------------------------------------------------------------</div>; wrf_nogsn_4.ncl<br>;----------------------------------------------------------------------<br><br>begin<br>;---Open WRF output file<br> filename = "/home/zmumba/DA/OUTPUT/2021081900/noda/wrfout_d01_2021-08-19_00:00:00"<br> a = addfile(filename +".nc","r")<br><br>;---Read temperature at first time step<br> tc = wrf_user_getvar(a,"tc",0)<br><br> lat2d = wrf_user_getvar(a,"XLAT",0) ; latitude<br> lon2d = wrf_user_getvar(a,"XLONG",0) ; longitude<br><br> wks = gsn_open_wks("x11","wrf_nogsn")<br><br> pltres = True<br> mpres = True<br><br> ;---Set special resource to indicate we are using XLAT/XLONG coordinates.<br> ;pltres@LatLonOverlay = True<br><br> ;---Resources for filled contour plot<br> res = True<br><br> res@gsnMaximize = True<br> res@cnFillOn = True<br> res@cnLinesOn = False<br> ;res@tfDoNDCOverlay = True ; This is necessary if you don't set sfXArray/sfYArray<br> ;res@cnFillDrawOrder = "PreDraw"<br> ;res@cnLineDrawOrder = "PreDraw"<br> ;res@gsnDraw = False ; don't draw yet<br> ;res@gsnFrame = False ; don't advance yet<br><br> res@cnFillOn = True <br> res@ContourParameters = 2. ; Change the spacing<br><br> ;---Zoom in on map and plot again<br> res@cnLineThicknessF = 2 ; make lines thicker, Default: 1<br> res@mpMinLatF = -18. ; zoom in on lat/lon area<br> res@mpMaxLatF = -8.<br> res@mpMinLonF = 21.<br> res@mpMaxLonF = 34.<br><br> nl = 0 ; bottomost level<br> contour = wrf_contour(a,wks,tc(nl,:,:),res)<br><br> ;---Overlay plot on map and draw.<br> ;plot = wrf_map_overlays(a,wks,contour,True,True)<br> plot = wrf_map_overlays(a,wks,(/contour/),pltres,mpres)<br><br> ;Define shapefiles<br> ;*****************<br> shp_filename = ("/home/zmumba/DA/TMINTMAX2/Shapefiles/Zambia/ZMB_ADM1.shp")<br><br> ;Set shapefile resources<br> ;***********************<br> shpres = True<br> shpres@gsLineThicknessF = 1 ; increase line thickness<br> shpres@gsLineColor = "Black" ; line colorgsLineThicknessF<br> shpres@gsLineDashPattern = 1<br><br> shp= gsn_add_shapefile_polylines(wks,plot,shp_filename,shpres)<br><br> ;draw(plot)<br> ;frame(wks)<br><br>end</div>
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