Re: Shape of the arrow head

Thanks Rick,

Is exactly what I want.

regards

Louis

--- En date de : Lun 5.4.10, Rick Brownrigg <brownrig@ucar.edu> a écrit :

De: Rick Brownrigg <brownrig@ucar.edu>
Objet: Re: [ncl-talk] Shape of the arrow head
À: "louis Vonder" <appopson@yahoo.fr>
Cc: "ncl forum" <ncl-talk@ucar.edu>
Date: Lundi 5 avril 2010, 17h59

Hi,
I don't know how to get exactly what you want, using fonts. One sort of hackish solution might be to draw it out the way you want it, something like:
r = Truer@txFont=34r@txFontHeightF=.025gsn_text_ndc(wks,"u",0.325,.32,r)x=(/.325,.325/)y=(/.32,.275/)gsn_polyline_ndc(wks,x,y,r)
This likely requires much fine tuning to get it just right, but...
Rick
On Apr 5, 2010, at 9:28 AM, louis Vonder wrote:
Dear NCL users,

I am trying to add arrow on a map using fonts/character.
To accomplish this task I used math_symbol.

Like this

 tx1res@txFont        = 18     ; math-symbols
 gsn_text_ndc(wks, "p", 0.225, 0.3, tx1res)

But I am not happy with the head of the arrow plotted.

I would like to have the head of the arrow which look like the one of the Font 36 of Weather 1, the head of the double-arrow corresponding to "m".

There is any way to change it?

It is possible to draw the using this

 tx1res@txFont        = 36     ; math-symbols
  gsn_text_ndc(wks, ".", 0.225, 0.3, tx1res)

with straight line rather than break line?

Thanks

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Received on Mon Apr 5 10:20:00 2010