Hi Hauss,
I guess you could trick NCL into doing this with the aid of the
resources related to gsnYRefLine. The following example illustrates
one such trick.
saji
------------------------
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
begin
x=ispan(1,100,1)
y=cos(x*3.14/50.)
res=True
res@gsnDraw=False
res@gsnFrame=False
;;;;;;;;;;;;;;;;;
res2=res
res2@xyLineColor="yellow"
ymin=min(y) ; calculate this or specify a value
ymax=max(y) ; calculate this or specify a value
y2=y/y ; create dummy variable y2
y2=y2*ymax ; all values of y2=ymax
res@trYMinF=ymin
res@trYMaxF=ymax
;;;;;;;;;;;;;;;;;
res@gsnYRefLine = ymin
res@gsnAboveYRefLineColor = "red"
wks = gsn_open_wks("x11","test")
plot1=gsn_csm_xy(wks,x,y2,res)
plot2=gsn_csm_xy(wks,x,y,res2)
overlay(plot1,plot2)
draw(plot1)
frame(wks)
end
Saji N. Hameed
Assistant Researcher
International Pacific Research Center,
2525 Correa Road, Honolulu, HI 96822
On Tue, 18 Oct 2005, Hauss Reinbold wrote:
> Hi everyone. Are there any resources for filling the background of an XY
> plot? Really all I want to do is add a nice grey background to some line
> plots (leaving the area outside the plot area white). I can think of a
> couple ways to do it with polygon fills, but I would rather use a resource if
> there is one. I've checked the resources and searched the help files. What
> did I miss? Or do I just have to create my own polygon fill underneath the
> plot somehow? I have the feeling this should be obvious so forgive me if it
> is. Thanks.
>
> Hauss Reinbold
> _______________________________________________
> ncl-talk mailing list
> ncl-talk@ucar.edu
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
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