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If I understand you correctly, you want to test sample variation. That is to say, how well your sample distribution matches your population (raster) distribution. This is not a correlative relationship and is commonly done by comparing the sample mean and variance against the population. Here is an example where I calculate mean, variance and quantiles for ...


3

Have you looked at Spatial Join? http://resources.arcgis.com/en/help/main/10.2/index.html#//00080000000q000000 Make the sub-basins the 'target features', the species polygons the 'join features' and then Spatial Join should generate a field Join_Count that simply gives the number of joins that matched each target feature. You can join one-to-one and get ...


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These 17 NDVI layers contains values range from -1 to 1. If you want to see the spatial variation i.e. where is the high/low vegetation then you need spatial analyst extension. Workflow for high vegetation is as below. 1.Load all 17 layers in the arc map and Cell Statistics Tool 2.Go to Toolbox>Spatial Analyst>Local>Cell Statistics 3.Set overlay ...



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