Re: how to use EllipseFitter?

Posted by Wayne Rasband on Dec 07, 2007; 9:48pm
URL: http://imagej.273.s1.nabble.com/how-to-use-EllipseFitter-tp3697835p3697836.html

Run the Edit>Selection>Fit Ellipse command to fit the ellipse. Here is
an example:

     newImage("Test", "RGB White", 400, 400, 1);
     makePolygon(22,143,215,32,292,68,195,132,175,208);
     setForegroundColor(0,0,0);
     run("Draw");
     run("Fit Ellipse");
     run("Draw");
     run("Select None");

-wayne

On Dec 7, 2007, at 11:56 AM, jiajian shen wrote:

> *Dear All,*
> **
> *Sorry to bother.  I want to fit an ellipse and draw it to my ROI.  I
> found
> that there is a EllipseFitter class.  But it is not in the menu of
> ImageJ.
> Anyone knows how to run EllipseFitter in a macro, if I have chose the
> ROI
> with XCoordinates and YCoordinates?  I am looking for some macro like
> **run("EllipseFitter",
> xarr,yarr);, but it does not work.  *
> **
> *The EllipseFitter only works for closed ROI.  For a set of
> (xarr,yarr), how
> to fit an ellipse if the points are discrete?  *
> **
> *Thanks a lot,*
> *Jiajian*
>