[ncl-talk] Unable to overlay

[Geeta Geeta]

Hi. 
I need 3 variables in one plot. these are wind speed (shaded contours), wind vectors and specific humidity (Q_flt). 
I am able to overlay two but the third one does not get overlaid. I have tried the function gsn_csm_contour_overlay

Can U pls help me. attaching my code; ---------------Plot the wind speed   Filled Contours  and Specific humidity

  base(deltaT)      = gsn_csm_contour_map(wks,wndspd,res)
  plot_q(deltaT)    = gsn_csm_contour_map(wks,Q_flt(deltaT,lev,:,:),resq)
                                                                            ; tried both with gsn_csm_contour and gsn_csm_contour_map
  india_id(deltaT)  = gsn_add_shapefile_polylines(wks,base(deltaT),IND_shape_fname,shpres)
;                       overlay(base(deltaT),plot_q(deltaT))


                     DCC_WCC         =  storms_file
                     TSTR_DCC_WCC    =  asciiread(DCC_WCC,-1,"string")
                                          print(TSTR_DCC_WCC)
                     LATC_DCC_WCC    =  stringtofloat(str_get_field(TSTR_DCC_WCC,1,delim))
                     LONC_DCC_WCC    =  stringtofloat(str_get_field(TSTR_DCC_WCC,2,delim))
                     add_DCC_WCC(deltaT) =  gsn_add_polymarker(wks,base(deltaT),LONC_DCC_WCC,LATC_DCC_WCC,RES_MARK_DCC_WCC)
;::::       Vector wind ::::::::

  plot(deltaT)      =   gsn_csm_vector(wks,U_flt(deltaT,lev,:,:),V_flt(deltaT,lev,:,:),res_vc)

                        overlay(base(deltaT),plot(deltaT))



   draw(base)
   frame(wks)
   end do


      panelres     =  True
                   gsn_panel(wks,base,(/2,2/),True)
 Geeta.
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