Re: Annotation on map

Hi Andrea,

I think part of the problem is your setting for amParallelPosF and amOrthogonalPosF. These are supposed to be small values, like 0.5 or -0.5 to move stuff away from the center of the plot.

When you use gsn_add_annotation to attach an object to plot, the default is that the object gets attached to the center of the plot. So, I think that since your center is already at 15E, 55N,
then hopefully you shouldn't need amParallelPosF and amOrthogonalPosF at all.

If all you are trying to do is attach a text string, can you use gsn_add_text?

--Mary

On May 24, 2012, at 5:17 AM, Andrea N. Hahmann wrote:

> Good morning (to most of you),
>
> I have a problem locating an annotation on a map. In the attached script I make a simple map whose center is near 15.E 55.N. Then, I try to locate an annotation at these coordinates:
>
> datatondc(base_map,15.,55.,x_out,y_out)
> print(x_out+" "+y_out)
> amres@amParallelPosF = x_out
> amres@amOrthogonalPosF = y_out
> amres@amJust = "CenterCenter"
> annoid = gsn_add_annotation(base_map, txid, amres) ; Attach string to plot
>
> First of all x_out and y_out are not near the center (0.,0.) and the string ends up at the lower left corner of the map. I am probably doing something wrong, but I don't know what it is.
>
> Thanks,
> Andrea
> ----
> Andrea N. Hahmann
> Senior Scientist
> DTU Wind Energy
>
> Technical University of Denmark
> Risø Campus
> Frederikborgvej 399, P.O. Box 49
> 4000 Roskilde, Denmark
>
> Direct +45 4677 5471
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> ahah@dtu.dk
> http://www.vindenergi.dtu.dk/
>
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Received on Thu May 24 08:49:49 2012