程序运行没报错 但没有图，求助大神

zlh

程序：
'reinit'

'sdfopen C:\Users\Administrator\Desktop\zlh\NC\air.2020.nc'
'sdfopen C:\Users\Administrator\Desktop\zlh\NC\rhum.2020.nc'
'sdfopen C:\Users\Administrator\Desktop\zlh\NC\uwnd.2020.nc'
'sdfopen C:\Users\Administrator\Desktop\zlh\NC\vwnd.2020.nc'

'set grid off'
'set grads off'
'set mpdset cnworld'

'set map 1 1 1'
'set ccolor 1'

'set t 951'
'set lev 850'
'set lat 20 35'
'set lon 100 120'
'set xlopts 1 5 0.2'
'set ylopts 1 5 0.2'

'define p=lev'
'define e=exp(17.67*(air-273.15)/(air-29.65))*(rhum.2/100)*6.112'
'define q=622*e/(p-0.378*e)'
'define q1=uwnd.3*q/9.8'
'define q2=vwnd.4*q/9.8'

'set gxout contour'
'set cint 2'
'd mag(q1,q2)'

hbl1021

从程序看没问题，用grads（小乌龟）的那个快捷方式运行，你用的是opengrads，建议加上'set display color white'     'c'，这两行，显示背景会变成白色，方便查看