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PLOTS routine.... [message #3361]

Fri, 20 January 1995 11:01

ratnakar amaravadi
Messages: 14
Registered: April 1994

Junior Member

What algorithm does the PLOTS routine use to compute
pixel coords between (x1,y1) and (x2,y2) when the command

PLOTS, [x1,x2],[y1,y2],/dev is executed.

I would like to know the exact pixel coords between (x1,y1) and
(x2,y2). After plotting the line, when I move the mouse, I get a
new value for (x2,y2). So when I draw the new line, I want to
erase the old line, and restore the underlying image. I can do this
by
PLOTS, XX(i),YY(i),color=image(xx(i),yy(i)),/dev
where image is the underlying image, and xx, yy are arrays
which contain the pixel coords between (x1,y1) and (x2,y2).

Thanks for your help.

Ratnakar Amaravadi Software/Hardware Engineer
Department of Radiology I.U. School of Medicine
(317)274-1843 (w) amaravad@indiana.edu
(317)274-4074 (fax) ratty@foyt.indyrad.iupui.edu
(317)632-5144 (res) http://www.indyrad.iupui.edu/~ratty/ratty.html

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		PLOTS routine.... By: ratnakar amaravadi on Fri, 20 January 1995 11:01
		Re: PLOTS routine.... By: Serdar Manizade on Mon, 23 January 1995 13:00

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