Re: How to set AnnoArrow a color

You need to set:

res@vcMonoLineArrowColor = False ;

Make sure you have the 'res@' part. Is that what you did?

If you continue to have problems, it would help if I could see your script, and even better if I can have your data too.

But, please try to debug this problem first before just sending it to me. The res@vcMonoLineArrowColor = False should work.

Another thing you can consider is not using gsn_csm_vector_scalar_map_ce. It may be easier to create a vector plot using gsn_csm_vector, a contour plot using gsn_csm_contour, a map using gsn_csm_map, and then overlay all three of them with the "overlay" procedure. It might look like this:

   vcres = True
   cnres = True
   mpres = True
    . . .
   vcres@vcMonoLineArrowColor = False
   . . . set other vector resources if desired . . .
   . . . set contour resources if desired . . .
   . . . set map resources if desired . . .

   vector = gsn_csm_vector(wks,u,v,vcres)
   contour = gsn_csm_contour(wks,x,cnres)
   map = gsn_csm_map(wks,mpres)

   overlay(map,contour)
   overlay(map,vector)
   draw(map)
   frame(wks)

This would also work, depending on what order you want things to be drawn on the map:

   overlay(map,vector)
   overlay(map,contour)
   draw(map)
   frame(wks)

--Mary

On Sep 4, 2013, at 8:59 AM, 朱学明 wrote:

> Hi Mary,
> Thanks for your help.
> I have checked the examples, I found that all of them use the function gsn_vector. But I am using the function gsn_csm_vector_scalar_map_ce, I also set
> vcMonoLineArrowColor = False ;
> But it is still not work. Do you think it is not work for the function gsn_csm_vector_scalar_map_ce?
> 2013-09-04
> 朱学明
> 发件人：Mary Haley <haley@ucar.edu>
> 发送时间：2013-09-04 22:29
> 主题：Re: Re: [ncl-talk] How to set AnnoArrow a color
> 收件人："朱学明"<557xiaozhu@163.com>
> 抄送：
>
> See the first example at:
>
> http://www.ncl.ucar.edu/Applications/veceff.shtml
>
>
> On Sep 3, 2013, at 1:16 PM, 朱学明 wrote:
>
> > Hi Mary,
> > Thanks for your responding. I have checked the example as you mentioned. But I did not found what I want. All the examples are just set the annotation arrow as black with default. But I would like its color can vary with the vaule of vcRefMagnitudeF's variation just as the arrows color in the vector field. I have setted the vcRefAnnoArrowUseVecColor = True and vcUseScalarArray= True , but the annotation arrow's color still is black. They look like not work.
> > Can you show me how should I set? Thanks.
> > 2013-09-04
> > 朱学明
> > 发件人：Mary Haley <haley@ucar.edu>
> > 发送时间：2013-09-04 01:54
> > 主题：Re: [ncl-talk] How to set AnnoArrow a color
> > 收件人："朱学明"<557xiaozhu@163.com>
> > 抄送："ncl-talk@ucar.edu USERS"<ncl-talk@ucar.edu>
> >
> >
> > Go to the resource page for vectors:
> >
> > http://www.ncl.ucar.edu/Document/Graphics/Resources/vc.shtml
> >
> > and search for all resources starting with "vcRefAnno"
> >
> > You will see that the "vcRefAnnoAngleF" resource hasn't been implemented yet, but you can change the color using one of: vcRefAnnoArrowFillColor, vcRefAnnoArrowLineColor or vcRefAnnoArrowEdgeColor, depending on which type of vector you are drawing.
> >
> > To see some of these resources used in an example script, go to:
> >
> > http://www.ncl.ucar.edu/Applications/res_list.shtml
> >
> > and search for the resource of interest, and you should see a list of examples that it appears in.
> >
> > --Mary
> >
> > On Sep 3, 2013, at 9:40 AM, 朱学明 wrote:
> >
> > > Hi all,
> > > I want to know how can I specify a color to the annotation arrow, just as it is in the vector field.
> > > How can I change the angle of the arrow head? I just can change the length of arrow head by the resource vcLineArrowHeadMaxSizeF now. But I also want to change the angle.
> > >
> > > Thanks for your help.
> > >
> > > 2013-09-03
> > > 朱学明
> > > _______________________________________________
> > > ncl-talk mailing list
> > > List instructions, subscriber options, unsubscribe:
> > > http://mailman.ucar.edu/mailman/listinfo/ncl-talk
> >
>
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Received on Wed Sep 4 09:12:14 2013