剖面图加入地形资料后填充区域为何是相反的？

summerthere

向Crystal_qiong同学学习加入地形依样画葫芦http://bbs.06climate.com/forum.p ... D8%D0%CE&page=1
自己画出来的图非常诡异。。。填充区域相反 请大神指导 地形形状倒是一致的
这是gs文件
'reinit'
'open C:/opengrads/Contents/Cygwin/Versions/2.1.a2.oga.1/i686/dz.ctl'
'sdfopen C:\opengrads\Classic\data\uwnd.2019.nc'
'sdfopen C:\opengrads\Classic\data\omega.2019.nc'

'set strsiz 0.2'
'set xlopts 1 4 0.15'
'set ylopts 1 4 0.15'
'set grads off'
'set grid off'
'set xlint 5'
'set ylint 100'
'set ylopts 1 6 0.18'
'set zlog on'
'set lon 75 105'
'set lat 38'
'set t 1'
'set lev 1000 100'
'set gxout shaded'
'set rbcols 1'
'set cmin 0'
'd smth9(dz.1)'

'set dfile 2'
'set lon 75 105'
'set lat 38'
'set t 1'

'set lev 1000 100'
'define u=uwnd.2'
'define w=(omega.3)*(-100)'
'set gxout stream'
'set arrowhead 0.4'
'set strmden 10'
'd u;w'

'draw title Zonal circulation along longitude 38N'
'draw xlab Longitude';'draw ylab Pressure (hpa)'
'printim C:\opengrads\Classic\data\test.png white'
'c'
图就成了...