Zooms into a portion of the ARW WRF model domain, and creates a map background (deprecated in version 5.1.0).
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. function wrf_map_zoom ( wks : graphic, nc_file : file, res : logical, y_start : integer, y_end : integer, x_start : integer, x_end : integer ) return_val  : graphic
Reference to an input netCDF file opened with addfile.res
A variable containing an optional list of plot resources, attached as attributes.y_start
Start and end values of the y (S-N) locations of the zoomed area of interest.x_start
Start and end values of the x (W-E) locations of the zoomed area of interest.
A scalar id of the map created is returned.
This function zooms into a portion of the ARW WRF model domain, and creates a map background for this area.
wrf_map_zoom is part of a library of functions and procedures in WRFUserARW.ncl written to help users plot ARW WRF model data.
WRF-related questions should be sent to email@example.com.
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl" load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl" a = addfile("wrfout_d01_2000-01-24_12:00:00.nc","r") wks = gsn_open_wks("x11","test") ter = wrf_user_getvar(a,"HGT",0) dims = dimsizes(ter) ; As an example, we are looking for the lower right 1/4 of the domain x_start = dims(1)/2 x_end = dims(1)-1 y_start = 0 y_end = dims(0)/2 map_zoom = wrf_map_zoom(wks,a,True,y_start,y_end,x_start,x_end)You can see some other example scripts and their resultant images at: