Overlays multiple plots created from other WRF-ARW plot functions (deprecated).
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl" ; These two libraries are automatically load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl" ; loaded from NCL V6.4.0 onward. ; No need for user to explicitly load. procedure wrf_overlay ( wks : graphic, plots [*] : graphic, res  : logical )
A plot resource. Set to True if you want to advance the frame before creating the next frame. Set to False if you do not want to advance the frame. Use False only if you plan on adding additional text/lines/symbols to the frame before advancing it.
This procedure overlays a number of graphical plots. This is typically used for idealized ARW WRF model runs.
wrf_overlay is part of a library of functions and procedures in WRFUserARW.ncl written to help users plot ARW WRF model data.
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl" load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl" ; Open ARW WRF output for the quater supercell idealized case a = addfile("wrfout_qss.nc","r") wks = gsn_open_wks("x11","test") time = 1 tc2 = wrf_user_getvar(a,"T2",time) ; T2 in Kelvin u10 = wrf_user_getvar(a,"U10",time) ; u at 10 m v10 = wrf_user_getvar(a,"V10",time) ; v at 10 m rest = True rest@cnFillOn = True contour = wrf_contour(a,wks,tc2,rest) resw = True vector = wrf_vector(a,wks,u10,v10,resw) wrf_overlay(wks,(/contour,vector/),True)You can see some other example scripts and their resultant images at: