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Please note: we now recommend using Fratstats for focal ("moving window") processing. Although you are free to download and use the extension, you are on your own; we do not support the software at all. We do not have, nor do we plan to develop a version for ArcGIS.

What is FocalPatch?

The FocalPatch Extension runs Fragstats on a moving window basis within the ArcView 3.x environment.

1. A sampling point theme is created from an existing grid.
2. For each point, a circular group of cells is extracted from a landcover grid. The center is the sampling point, and the radius is user-defined.
3. Fragstats is run on the extracted group of cells, and landscape metrics are calculated.
4. Landscape metrics are then placed in an output table for eack point.

Other functions:

1. Utilization distribution intersection calculation.
2. Utilization distribution calculation from a kernel grid.

PowerPoint presentation on FocalPatch

Our paper from Ecology

Marzluff, J. M., J. J. Millspaugh, et al. (2004). "Relating resources to a probabilistic measure of space use: Forest fragments and Steller's Jays." Ecology 85(5): 1411-1427.

See the links at the top of the page for details.