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Re: stippling or cross hatching in contour plot [message #56275 is a reply to message #56149]

Mon, 08 October 2007 11:48

MA
Messages: 15
Registered: August 2005

Junior Member

Hello David,
thanks, that's definitely an improvement. However, I'm still trying to
hatch only between two levels (significant areas), not hatch all over
the plot. I've modified your code a bit, and now it's working. I
basically create a new array from the original, in which I set all
points I want to hatch to 1, all points I don't want to hatch over to
0, then contour at levels 1 and above.

;*********************************************************** **********
;; create some data
array=dist(10,10)

Window,2
loadct,2
;; contour data with color
loadct, 33, ncolors=5, bottom=1
device, decomposed=0, get_decomposed=theState

thisDevice = !D.Name
xsize = !D.X_Size
ysize = !D.Y_Size
Set_Plot, 'Z'
Device, Set_Resolution=[xsize,ysize], Z_Buffer=0
contour,array,levels=indgen(5),c_colors=indgen(5)+1,/fill, $
xstyle=1, ystyle=1, position=[0.1, 0.1, 0.9, 0.9]
;; try to put hatching on top
locx = [0.1, 0.9] * xsize
locy = [0.1, 0.9] * ysize
snap1 = TVRD(locx[0], locy[0], locx[1]-locx[0]+1, $
locy[1]-locy[0]+1)
;; create new array for hatching
newarray=array
;; set points I want to hatch over to 1
newarray[Where(array GT 2.5 AND array LT 5.)]=1.
;; set points I don't want to hatch over to 0
newarray[Where(array le 2.5 OR array ge 5.)]=0.
;; contour level=1 and some value above, which results in
;; hatching only over the area where the original array
;; had values between 2.5 and 5.
contour, newarray,levels=[1,2],/overplot, $
c_orientation=[45]
snap2 = TVRD(locx[0], locy[0], locx[1]-locx[0]+1, $
locy[1]-locy[0]+1)

Set_Plot, thisDevice
contour,array, xstyle=1, ystyle=1, /NoData, $
position=[0.1, 0.1, 0.9, 0.9]
TV, snap1 > snap2, locx[0], locy[0]
device, decomposed=theState
end
;*********************************************************** ***

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[Message index]

		stippling or cross hatching in contour plot By: MA on Fri, 05 October 2007 14:26
		Re: stippling or cross hatching in contour plot By: pgrigis on Mon, 08 October 2007 13:22
		Re: stippling or cross hatching in contour plot By: David Fanning on Mon, 08 October 2007 12:30
		Re: stippling or cross hatching in contour plot By: MA on Mon, 08 October 2007 11:48
		Re: stippling or cross hatching in contour plot By: David Fanning on Mon, 08 October 2007 09:47
		Re: stippling or cross hatching in contour plot By: David Fanning on Mon, 08 October 2007 09:28
		Re: stippling or cross hatching in contour plot By: pgrigis on Mon, 08 October 2007 09:08

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