In ArcMap 10, I have a few dozen tiffs with cells that represent habitat area that has been burned. Each burned cell has a Julian date of the fire associated with it.
I want to end up with polygons that represent a single fire event each, defined as (8-way) contiguous groups of cells where no bordering burned cells differ by >1 Julian day; i.e., where burned cells differ by 2 or more days, these would be classed as separate fires.If I convert the tiffs to shp files based on the date field, it groups all the contiguous cells for a single date.
How can I merge only the polygons that are both adjacent and differing by one day?
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I want to end up with polygons that represent a single fire event each, defined as (8-way) contiguous groups of cells where no bordering burned cells differ by >1 Julian day; i.e., where burned cells differ by 2 or more days, these would be classed as separate fires.If I convert the tiffs to shp files based on the date field, it groups all the contiguous cells for a single date.
How can I merge only the polygons that are both adjacent and differing by one day?
أكثر...