tallison at massaudubon.org
Mon Aug 25 17:41:14 CDT 2003
I have a map (X,Y coordinates) of plants, and for each plant I have recorded a set of attributes (size, flower production, sex expression - male or female bias). In ArcView, I have used a test for randomness of distribution of these plants - they are slightly clumped. I would also like to test the dispersion of the attributes, e.g. are male-biased plants clumped or randomly distributed, or, phrased another way, is the probability of a male-biased plant's nearest neighbor also being male-biased signficantly higher than the near neighbor being female-biased? My knowledge of spatial statistics is very limited (as you can probably tell), and it is not clear to me how I can analyze the spatial dispersion of the attribute data in ArcView or GeoDa. Also, if plants are clumped, how do I separate that pattern from the pattern I want to analyze for the attribute data, i.e., will plant clumping bias my analysis of attribute pattern?
Thank you for your suggestions.
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