Read a Wrong Range of XLONG

[yang7ke]

Describe the bug
I use three softwares (NCL, Ncview, VAPOR) to read a WRF ouput file.
The issue is that the displayed range of XLONG by NCL is significantly different from Ncview and VAPOR:
NCL: 95.0 to 95.35
Ncview: 95.0249 to 95.5895
VAPOR: 95.0268 to 95.5881
you can download the Screenshot of my operation by browsing the website below:
https://rec.ustc.edu.cn/share/f0870f60-121a-11ec-b6b6-452614aec25b

Provide the following:

• a concise NCL script demonstrating the issue (remove unnecessary code)

  a = addfile("wrfout_d03_2020-07-31_00:00:00.nc","r")
  wks = gsn_open_wks("png","test")
  time = 1
  slp = wrf_user_getvar(a,"slp",time)  ; slp
        wrf_smooth_2d( slp, 3 )        ; smooth slp
  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_t = wrf_contour(a,wks,tc2,rest)
  resp = True
  resp@cnLineColor = "NavyBlue"
  contour_p = wrf_contour(a,wks,slp,resp)
  resw = True
  vector = wrf_vector(a,wks,u10,v10,resw)
  over_id = wrf_map_overlays(a, wks,(/contour_t,contour_p,vector/),True,True)

Computing environment

• OS: Linux
• OS version: Ubuntu 19.04
• NCL Version: 6.6.2
• Installation method: binary from NCAR website