Re: How to analyse a pattern of holes?

Posted by BillyWu on Aug 07, 2015; 4:49pm
URL: http://imagej.273.s1.nabble.com/How-to-analyse-a-pattern-of-holes-tp5013892p5013953.html

Dr. Straatman,

Thank you for getting back to me with the macro. I get an error message when I attempt to use it though, I'm not totally sure why.

Instead of having the software automatically find the pellet holes and draw a circle of best fit, would it be possible to draw a circle of best fit if I pre-defined the pellet holes? The work I am doing is based off of a previous student's work from my university. This is an extract from their thesis that explains what they did, but not how they did it. I need to replicate this in the same way.

"To obtain a measurement of pellet dispersion the images were analysed using ImageJ
software. The pellet holes that comprised the perimeter of dispersion were selected
(excluding ‘fliers’; pellets significantly outside the general area of dispersion). The
software was then implemented to analyse the selected points and draw a circle of bestfit,
with >90% of the total number of pellets included within the circle. The software was
then used to provide an area measurement of the circle in mm2, with input of the known
dimensions of the paper for scale"

If you know how I could go about doing what they did then I would very much appreciate help in doing it.


Best regards,


Bill