interparticle distance analysis

[yp9]

I am interested in making a histogram of nearest neighbor distances.

I have a population of metal particles dimers, which I suspect are of two types: 1 type with a narrow interparticle distance distribution, and the second with a wide distribution.

is there any macro or package out there for me?

Thanks,

Yariv

[Teresa W]

I recently came across this reference and associated freeware, (not IJ). The author was also helpful and replied to my query.

Beggan, C. and C. W. Hamilton (2010). "New image processing software for analyzing object size-frequency distributions, geometry, orientation, and spatial distribution." Computers and Geoscience 36: 539-549.

Teresa