Figure/image update question.

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2 total messages Started by Craig Jones Thu, 21 Jan 1993 23:00

#10

Author: Craig Jones
Date: Thu, 21 Jan 1993 23:00

28 lines
1494 bytes

I was hoping that someone will be able to help me here.

What I am doing is reading in an 8-bit image and would like to
pick some points on it.  I can plot the points on the image
but every point that is plotted Matlab clears the figure and 
redraws the whole thing.  This is WAY too slow.

What I am hoping is that there is some way in Matlab to turn
off the redraw/refresh??

A secondary question.  Does anyone have any .m file that will 
allow me to plot a point on the screen move to the opposite corner
of the rectangle the whole while a "rubber" rectangle is being
drawn on the screen to show me the area that I am outlining??

Thanks.

Craig.

--
Craig Jones                                       University of Western Ontario
                                                  Imaging Research
E-mail: craigj@irus.rri.uwo.ca

-- 
Craig Jones                                       University of Western Ontario
                                                  Imaging Research
E-mail: craigj@irus.rri.uwo.ca

Re: Figure/image update question.

#56

Author: E. Bryan George
Date: Mon, 25 Jan 1993 17:04

28 lines
1369 bytes

In article <1993Jan21.230058.5077@julian.uwo.ca> craigj@irus.rri.uwo.ca ( Craig Jones) writes:

   What I am doing is reading in an 8-bit image and would like to
   pick some points on it.  I can plot the points on the image
   but every point that is plotted Matlab clears the figure and 
   redraws the whole thing.  This is WAY too slow.

   What I am hoping is that there is some way in Matlab to turn
   off the redraw/refresh??

In Matlab 4, you can do this by specifiying a plot as a graphics
object then using the 'set' command to change the data in the plot
without redrawing the axis.  Look at ODE23P for further clues.

   Thanks.

You're welcome.

   Craig.

Bryan.

--
E. Bryan George, Ph.D.
Principal Electrical Engineer
Signal Processing Center of Technology
Lockheed Sanders, Inc.
Nashua, NH USA

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