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Re: Resizeable Graphics window [message #75199 is a reply to message #75117]

Thu, 17 February 2011 13:01

wlandsman
Messages: 743
Registered: June 2000

Senior Member

Another resizeable window question:

Do device coordinates make any sense in a resizeable window (when the size of your "device" is always changing)?

Below I give a test program that displays error bars, but first converts the data to device units. It works fine in a normal window, but if I create a resizeable window (i.e. test,/window) the lines are plotted incorrectly.

In this case, the use of device coordinates is perverse, but they are sometimes useful for "ornamental" figures. For example, setting the size of an arrow or the "hat" on an error bar to one-fiftieth of the screen size.

Thanks, --Wayne

pro test,window=window
x = indgen(10)
y = indgen(10)

; Let's do everything in device coordinates

data_low = convert_coord(x,y-0.5,/TO_DEVICE)
data_hi = convert_coord(x,y+0.5,/TO_DEVICE)
xd = data_low[0,*]
yl = data_low[1,*]
yh = data_hi[1,*]

cgplot,indgen(10),indgen(10),window=window,psym=2
if keyword_Set(window) then cgcontrol,execute=0

for i=0,9 do $
cgplots,[xd[i],xd[i]],[yl[i],yh[i] ],/device, addcmd = window

if keyword_set(window) then cgcontrol,execute=1
return
end

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[Message index]

		Resizeable Graphics window By: wlandsman on Thu, 17 February 2011 11:35
		Re: Resizeable Graphics window By: Jeremy Bailin on Fri, 18 February 2011 06:53
		Re: Resizeable Graphics window By: David Fanning on Thu, 17 February 2011 13:23
		Re: Resizeable Graphics window By: wlandsman on Thu, 17 February 2011 13:21
		Re: Resizeable Graphics window By: David Fanning on Thu, 17 February 2011 13:13
		Re: Resizeable Graphics window By: wlandsman on Thu, 17 February 2011 13:05
		Re: Resizeable Graphics window By: wlandsman on Thu, 17 February 2011 13:01
		Re: Resizeable Graphics window By: Jeremy Bailin on Thu, 17 February 2011 12:56
		Re: Resizeable Graphics window By: David Fanning on Thu, 17 February 2011 12:52
		Re: Resizeable Graphics window By: David Fanning on Thu, 17 February 2011 12:44

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