Re: Ever decreasing circles

Posted by Rasband, Wayne (NIH/NIMH) [E] on Dec 12, 2016; 8:56pm
URL: http://imagej.273.s1.nabble.com/Ever-decreasing-circles-tp5017755p5017768.html

On Dec 11, 2016, at 8:38 AM, John M Brear <[hidden email]> wrote:
>
> Calculating the circularities of our observed precipitates shows that we
> would obtain much better discrimination by selecting on circularity values
> greater than 1.  At present ImageJ does not allow this.

The particle analyzer in the latest ImageJ daily build (1.51i15) allows you to select on circularity values greater than 1. As an example, this macro

  run("Particles (75K)");
  run("Set Measurements...", "area shape");
  run("Analyze Particles...", "  circularity=1.0-1.9 display clear include”);

selects the 2412 (!!) objects in the Particles sample image that have circularity values greater than 1.

-wayne





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