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Re: drawing a Line (ROI) from/to negative values

Posted by Gabriel Landini on Mar 06, 2006; 10:01am
URL: http://imagej.273.s1.nabble.com/drawing-a-Line-ROI-from-to-negative-values-tp3703467p3703469.html

On Monday 06 March 2006 09:21, Johannes Hermen wrote:
> In our case we need to draw a Line Roi that lies outside the image. For
> example we want to draw the line from pixels -200,-200 to -400,-400.
> This does not work; the line is allways painted only to zero or to the
> maxvalue of each axis.

Where is the result of the line being drawn going to be held?
The drawing must be to some pixel with a memory location.
This is like writing on a piece of paper that does not exist... :-)
Am I missing something?

Can you create an image and choose the coordinate origin different that the
top right corner (the ability to do this has been added recently to IJ).

I hope it helps.
Cheers

Gabriel