spatial distribution of particles

[emily]

Hello Image J heroes,

I'm trying to use image J to produce a spatial distribution of particle (something similar to the attached picture) does anyone have any suggestions?

regards,

Emily

[ashamim]

Emily

It is possible. Do you know the locations as compared to the centre point ? or do you have some parameters which define the position of the points.

regards

[emily]

Thanks for the reply. I have now attached my image, i have scaled it and cleaned it up.

I do not have parameters for the position of the points. however I can locate a nominal centre of the distribution (huzzah!).

I inverted the image, used Analyse > set measurment to measure "Centre of Mass" and then Ctrl-M

the effective centre of the dispersion is (119.9 mm, 80.2mm).

I'm thinking a long way of doing it would be to measure the area of particles contained in incrementally larger circles centreed on the origin and then plot, however a quicker way would be appreciated.

Any suggestions?