>
> >
> > Hi there -
> >
> > It seems that legends in an XY plot are in a reverse order from what I would call intuitive. That is, the 0th Y datum "vector" is the last legend item while the Nth Y datum is the first. For example, if I use:
> >
> > Y = some 2-D array with the first dimension 3
> > res@xyExplicitLegendLabels = (/"0","1","2"/)
> > res@xyDashPatterns = (/0,1,2/)
> > plot = gsn_xy(wks,Xaxis,Y,res)
> >
> > then the datum Y(0,:) is plotted with a solid line and label "0", but it is the last item in the legend whereas I want it to be the first.
> >
> > This can of course be avoided by just reversing everything, but that's a pain in the neck. I feel I am missing something easy here, but does anyone know of an easy way to reverse the legend?
> >
> > Cheers,
> > Josh
>
> Hi Josh,
>
> I'm afraid there's no easy way to reverse the legend, as you
> discovered. I'll find out from the developers if this is an easy
> feature to add.
>
> --Mary
I should point out that you can create your own legend using the
gsn_legend_ndc procedure. See:
http://ngwww.ucar.edu/ngdoc/ng/ug/ncl/gsun/appendixa.html#gsn_legend_ndc
for documentation, and:
http://www.cgd.ucar.edu/csm/support/CSM_Graphics/legend.shtml
for an example (example 6).
Using gsn_legend_ndc may require that you set up quite a few
resources, however, to get the dash patterns, colors, line labels,
line label font heights and colors, etc, that you want. You could do
this by retrieving all this information from your XY plot, or just
creating them from scratch.
See:
http://ngwww.ucar.edu/ngdoc/ng/ref/hlu/obj/Legend.res.html
to see a comprehensive list of all the available legend resources.
--Mary
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