Characterizing spatial distribution
I have data which is distributed over two dimensional space and need to characterize the uniformity or lack of uniformity of that data over the space. Specifically, this is topographical data, that is, there is a height value associated with each point in the xy plane, such as is obtained in atomic force microscopy. I thought that several years ago I had found a statistical function in Igor to characterize the spatial uniformity of a data set, but cannot find the work in my records nor did my searching of the Igor manual, mail list or IgorExchange turn up anything.
Fri, 10/11/2013 - 07:05 pm
I found information on Moran's I measure of spatial autocorrelation that looks promising. I will try coding this. I would appreciate hearing if there are other ideas or if anyone can point out something in Igor that I have overlooked.