图形偏移后的坐标固定

lily2333

我用ncl画图时出现底图和实际图形的坐标偏移，同学说可能是坐标没有固定，要重新设置坐标，于是修改后的部分程序如下：
;**********************************************************************
; load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
; load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
begin
;-----------------读取数据-----------------------------   
  f = addfile("./mfwamglocep_2017010300_R20170104.nc","r");读取nc文件
  lon = f->longitude(0:4319)
  lon@units = "degrees_east"
  lat = f->latitude(0:2040)
  lat@units = "degrees_north"
  H = f->VHM0(0,0:2040,0:4319) ;取nc变量赋值
  H!0="lat"
  H&lat = lat
  H!1="lon"
  H&lon = lon
  wtype          = "png"
  wks1 = gsn_open_wks(wtype,"swh")

可是出现了报错：
(0) check_for_y_lat_coord: Warning: Data either does not contain a valid latitude coordinate array or doesn't contain one at all.
(0) A valid latitude coordinate array should have a 'units' attribute equal to one of the following values:
(0)     'degrees_north' 'degrees-north' 'degree_north' 'degrees north' 'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg north'
(0) check_for_lon_coord: Warning: Data either does not contain a valid longitude coordinate array or doesn't contain one at all.
(0) A valid longitude coordinate array should have a 'units' attribute equal to one of the following values:
(0)     'degrees_east' 'degrees-east' 'degree_east' 'degrees east' 'degrees_E' 'Degrees_east' 'degree_E' 'degreeE' 'degreesE' 'deg east'


我不理解为什么我已经设置坐标单位还会这样报错？而且图依旧是偏移的没有改进，应该怎么才能解决偏移的问题呢？麻烦大家帮忙看看

灭火器

   要不你把提取出来的lat和lon打印出来，检查一下坐标数组是不是有问题。

Lllllin

请问你解决了这个问题嘛，遇到了类似的问题不知道怎么改TT