ncl做水汽通量矢量图时，如何改变箭头的密度

南宫蓝天

es=new((/56,51/),float)
es=6.1078*exp(17.2693882*(temp-273.16)/(temp-35.86))
e=new((/56,51/),float)
e=es*rh
q=new((/56,51/),float)
q=0.622*e/(85000-0.378*e)
g=9.78
qv=new((/56,51/),float)
qv=q*sqrt(u^2+v^2)/g
老是出现错误，CvtGenSFObjToFloatSFObj: sfDataMinV greater than sfDataMaxV: exchanging
fatal:ContourPlotInitialize: internal error creating levels, invalid max or min data value
fatal:ContourPlotInitialize: error getting contour level information
fatal:ContourPlotInitialize: error initializing dynamic arrays
fatal:Unable to initialize layer-Can't Create
fatal:Unable to access object with id:-4
fatal:PID #-4 can't be found in NhlSetValues
warning:overlay: bad HLU id passed in, ignoring
fatal:["Execute.c":8575]:Execute: Error occurred at or near line 7400 in file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl

fatal:["Execute.c":8575]:Execute: Error occurred at or near line 10601 in file $NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl

fatal:["Execute.c":8575]:Execute: Error occurred at or near line 88 in file vapor.ncl
怎么破{:5_275:}我画的不是矢量图，是contour

南宫蓝天

{:5_275:}貌似少点定义维度巴拉巴拉的东西

橙子鲜

额，其实我也只是个菜鸟，只能凭感觉哦。
es，e,q,既然是算出来的数组。那么就不用定义，直接删除定义的三行 ，你试一下。要不然你把你全部的脚本都粘过来，我试试

磕巴

楼主能提供一下水汽通量散度的ncl脚本吗？

jianglegejiang

南宫蓝天 发表于 2015-4-26 22:27
es=new((/56,51/),float)
es=6.1078*exp(17.2693882*(temp-273.16)/(temp-35.86))
e=new((/56,5 ...

x11没提前打开吧

Hh522

楼主解决了吗 我也是同样的报错

Acountless

遇到同样的问题，但是似乎在这里找不到答案啊