Re: draw reference line over contour plot

If you are drawing a straight reference line that is constant in X or Y, for a particular Y or X value, then use gsnYRefLine or gsnXRefLine.

If you just need to add a line, straight or not, to an existing gsn_csm_contour plot, then you can use gsn_add_polyline. This attaches the line to the given plot, so you have to draw the plot *after* the line is added, in order to see it.

Try running the attached short example.

--Mary

On May 20, 2014, at 6:26 AM, Ahmad Farsyud <a.farsyud@gmail.com> wrote:

> Hallo NCL people,
>
> I cant find a trick how to plot a reference line in gsn_csm_contour
> in which my X-axis is month and y axis is height (km). I wanted to create
> something like this function gsnxRefLine in month-5.
>
> Thanks for any short hints.
> Best,
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk