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Re: shading in contour plots [message #44740 is a reply to message #44648]

Mon, 11 July 2005 01:36

c.hoyle
Messages: 3
Registered: July 2005

Junior Member

> P.S. If you are still struggling, tell us something about
> the size of the array you are contouring and let us see
> the contour code you are using.

I think this better describes my problem. Consider the following:

;test the shading in contour plots:
JM=46
KM=25

inbetween=1 ;choose 1 for 3 levels or anything else for 2 levels.

sf=fltarr(JM,KM)
sf(20:21,10:15)=1.

sf(10:11,10:11)=1.

sf(5,10)=1.
sf(5,11)=1.
sf(5,12)=1.

;sf(*,*)=1
xr=[-90,90]
yr=[0,24]
IF inbetween EQ 1 THEN lev=[0.,0.5,1.] ELSE lev=[0.,1.]
IF inbetween EQ 1 THEN col=[0,100,182] ELSE col=[0,182]
lat_arr=findgen(JM)*4-90
alt=findgen(KM)
Contour,sf,lat_arr,alt,levels=lev,ystyle=1,xstyle=1,xrange=x r,$
yrange=yr,xtitle='Latitude',ytitle='Altitude
(km)',c_thick=3,charthick=3,charsize=1.2,$
/cell_fill,c_colors=col

oplot,[-10,-10],[0,25]

END

If you only use levels 0 and 1, the line on the far left does not show
up. If you use levels in between 1 and 0, the boundaries of the other
rectangles are no longer properly defined. This is not such a problem
with rectangles, but if the shapes are more complicated, then the
result is not
good. I dont think that this is a problem with nlevels (I dont use it)
or /fill (I use /cell_fill).
cheers,
Chris

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[Message index]

		shading in contour plots By: c.hoyle on Sun, 10 July 2005 02:04
		Re: shading in contour plots By: c.hoyle on Wed, 13 July 2005 00:34
		Re: shading in contour plots By: R.G. Stockwell on Mon, 11 July 2005 08:46
		Re: shading in contour plots By: David Fanning on Mon, 11 July 2005 02:00
		Re: shading in contour plots By: c.hoyle on Mon, 11 July 2005 01:36
		Re: shading in contour plots By: David Fanning on Sun, 10 July 2005 03:02

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