想问一下大神，比湿场的图为什么没有

yxm20111301237

'reinit'
'set grads off'
'set grid off'
'sdfopen e:\fengchang\uv.nc'
'sdfopen e:\specific_humidity\s_h.nc'
'enable print e:\fengchang\850\7.5hPa.gmf'
'set lat 20 45'
'set lon 90 125'
'set z 1'
'set t 1'
'set mpdset cnworld'
'set map 1 1 1'
'set vpage 0 11 0 8.5'
'set parea 0 11 1 8'
'set xlopts 1 4.0 0.18'
'set ylopts 1 4.0 0.18'
'set xlint 10'
'set ylint 10'
'set gxout shaded'
'set cmin 0.014'
'set rgb 17 220 220 220'
'set rgb 18 180 180 180'
'set clevs 0.014'
'set ccols 17 18'
'd q.3'
'set gxout contour'
'set cint 0.002'
'set ccolor 1'
'd q.3'
'set strmden 1'
'set arrscl 0.5 20'
'set grads off'
'set gxout vector'
'd skip(u.1,2,2);v.2'
'define m=mag(u,v)'
'set clevs 12'
'set ccolor 2'
'set cthick 10'
'd m'
'draw rec 4.33 1  8.30 6.6'
'print'
'disable print'
'reinit'