I have recently experimented with the automated delineation of trees from high resolution imagery and also from Lidar. Since I have also derived the approximate height of each point from the LiDAR derived height layer, I would now like to get the inter-tree distance between each tree and its nearest five neighbors. My intent is to then use this as a tree specific measure of density/spacing to derive a more accurate estimate of each tree's diameter. Since there are from 500 - 5000 stems per hectare and I am dealing with approximately 70,000 hectares, the processing may be significant. While I have some ideas on how this might be accomplished, I don't have a super-computer at my disposal to complete all of the calculations.

If anyone has any ideas on an efficient process for making these calculations, your input would be greatly appreciated.

Gord.

HI gordon, I think you could achieve this using the generate near table tool and specifying closest five. I am curious though, how you will derive the tree diameter from this metric.