How to panel vector plots with one same annotation

Dear all,
        In vector plotting, I see that both gsn_vectorXXX and wrf_vector
        give a annotation about the vector for each draw (vcRefAnnoOn =
        True). Here is my question: How could NCL panel several plots
        (e.g. plot by wrf_vector) in one figure with only one same
        vector annotation after vcRefMagnitudeF and vcRefLengthF have
        been set to fixed value? I didn't find such figure in webpage.
        Is there a way like paneling contour plots in wrf (PanelPlot =
        True).
        
        An work-round maybe that set vcRefAnnoOn = False for each plot,
        then add a big vector annotation at the bottom for the figure
        using polygon and polyline elements? If so, where should I get
        the information of vector? Could I use the information in class
        "VectorPlot"? Any suggestion or better idea?
        
Best Regards,
Hui Wu

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Received on Tue May 28 10:07:17 2013