| Graphics Bug [message #13089] |
Tue, 13 October 1998 00:00 |
ashmall
Messages: 14
Registered: October 1998
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Junior Member |
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I've found a bug that causes some of a plot to not be displayed. It occurs
if a dialog box is used immediately after a plot command. Although the problem
is easily solved, I got really confused since it appeared that I was missing
data.
I sent this to FPS (the UK sellers of IDL) but never heard anything back; it
may be of interest to some of you.
Justin.
pro colour_bug
;Justin Ashmall, 8th Sept 98, justin@ic.ac.uk
;Bug reproduced using Win NT4, Intel PII 350Mhz processor
;Using true-colour display
;IDL 5.1.1
;It seems that if a modal dialog follows immediately
;after the plot the whole display does not get updated
;(still buffered?). On my display, when the dialog
;box appears, the colour of the last ~1/8 of the sine
;curve has not changed.
;Putting in a short wait or an EMPTY command solves
;the problem.
;******* Define some colour variables in hex *******
colour=['00FFFF'XL,'0000FF'XL,'00FF00'XL,$
'FFFF00'XL,'FF0000'XL,'FF00FF'XL,$
'0080FF'XL,'FFFFFF'XL]
x=findgen(1000)*2*!pi/1000
y=sin(x)
plot,x,y,COLOR=colour[7] ;plot the lot in white first
for i=0,7 do begin
;over plot in various colours
oplot,x,y,COLOR=colour[i]
;Uncomment either of the next 2 commands
;to solve the problem.
;wait,0.1
;empty
dummy=dialog_message("Continue?")
endfor
end
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