I would like to calculate contagion index for species distribution data which is gridded at 2x2 km. I have created geoTIFF files from raster data in ArcMap 10.3. I have tried FRAGSTATS but cannot create a user defined raster 'tile grid' properly (converting a raster to a geoTIFF seems to result in a single cell, therefore loosing my 51*56 grid to divide my landscape up by). Should be able to create this grid easily in FRAGSTATS using the 'uniform tiles' parameter settings, but this crashes FRAGSTATS giving an 'assertion fail' C++ error message.
This forum goes into detail on doin this.
http://forums.esri.com/Thread.asp?c=93&f=995&t=149161
You might be also interested in using FRAGSTATS metrics in open source GIS. For QGIS, there is the plugin "LecoS" (http://plugins.qgis.org/plugins/LecoS/). For GRASS, you could use the "Landscape structure analysis package" (http://grass.osgeo.org/grass71/manuals/r.li.html)
http://grass.osgeo.org/grass71/manuals/r.li.html
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