Re: question on overlay plot with polymarker

There are 3 drawing phases for most graphical objects. These are known as PreDraw, Draw, and PostDraw.
The order of overlaying only affects objects drawn in the same draw phase.

For your plot you might be interested in the following:

mpFillDrawOrder (defaults to Draw)
mpOutlineDrawOrder (defaults to PostDraw)
tfPolyDrawOrder (defaults to PostDraw -- affects poly primitives added to plot objects only, not primitives drawn immediately using procedures like gsn_polymarker)
vcVectorDrawOrder (defaults to Draw)

Bottom line: change tfPolyDrawOrder to "Draw" and the vectors should get drawn after the polymarkers.
 -dave

On Feb 25, 2013, at 4:14 PM, tingting@ucar.edu wrote:

> Hi all,
> I have a plotting question on overlay plot with poly marker. My desire
> plot is adding another plot overlay on poly-marker plot. I firstly plotted
> the map, then draw poly-markers on map, then plot another plot1, and
> lastly, overlay plot1 on map with poly-markers. But, the output shows
> poly-marker was the last drawing.
> Parts of my script:
> ******************************
> res = True
>
> res@gsnDraw = False ; Don't draw plot
> res@gsnFrame = False ; Don't advance frame (page)
> res@gsnPolar = "SH"
> res@mpMaxLatF = -45
> res@mpFillOn = True
> res@mpOutlineOn = True
> map = gsn_csm_map_polar(wks,res)
> .......
> res4 = True
> .....
> dum1 = gsn_add_polymarker(wks,map,lon_new(i,:),lat_new(i,:),res4)
> .......
> res3 = True
> .....
> topplot = gsn_csm_vector(wks,c1,d1,res3)
> overlay(map(0),topplot1)
> .......
> ******************************
> I just wondering how to solve this kind of plotting issue?
> Thanks in advance and best,
> Tingting
>
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Received on Mon Feb 25 17:43:15 2013