>
> dear ncl users:
>
> just wondering how to add a symbol as text to a plot.
> i would like to add the symbol for potential temperature
> (theta). could i do this using function codes somehow?
> thank you,
> matt
>
Hi Matt,
Yes, any time you want to add a special symbol to a plot, you
can usually do this via a text function code. First, visit the
NCL font tables at:
http://ngwww.ucar.edu/ngdoc/ng/ref/FontTable.html
You can click on any one of the font names or numbers to see all the
characters for that font. If you see one you like, keep track of which
character it is associated with. I'm going to use the infinity symbol
as an example (font table 34, character "%"):
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
begin
wks = gsn_open_wks("x11","example")
inf_sym = ":F34:%"
gsn_text_ndc(wks,inf_sym,0.5,0.5,False)
frame(wks)
end
Note that the colon (:) in the string ":F34:%" tells NCL that you are
about to enter a function code, which is "F34" in this case. This
tells NCL to start using font table 34. The second colon takes you out
of function code mode, and back into regular mode. Then, when the "%"
is encountered, you will get whatever character this represents in
font table 34 (an infinity symbol).
Some people may have redefined the function code to be another
character (like a tilde (~)), in which case you will need to use this
character in place of the colons.
You can see some examples at:
http://www.cgd.ucar.edu/csm/support/CSM_Graphics/text.shtml
--Mary
-------------------------------------------------
Mary Haley haley AT ucar.edu
NCAR/SCD/VETS 303-497-1254 (voice)
1850 Table Mesa Dr 303-497-1804 (fax)
Boulder, CO 80305
-------------------------------------------------
_______________________________________________
ncl-talk mailing list
ncl-talk AT ucar.edu
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
This archive was generated by hypermail 2b29 : Tue Jun 24 2003 - 13:16:59 MDT