This is an imageJ plugin for calculating the nearest neighbor distances of the particles.

Installation

Download the plugin file from here.

Copy the Nnd_.class file to the ImageJ/Plugins/Analyze folder and restart the ImageJ.

Then, you can call the plugin at Plugins -> Analyze -> Nnd.

Usage

Follow the last step (step 8) of ImageJ Beginner Tutorial 1.

Click Analyze -> Set Measurements, Make sure "Centroid" is checked.

Click Analyze -> Analyze Particles.. and then ok.

The results window will display the X and Y coordinates of the particle's centroid.

Click Plugins -> Analyze -> Nnd to get the nearest neighbor distances.