topic Re: Correlation between size of a point and its distance from a landscape feature? in Archaeology GIS Questions

Correlation between size of a point and its distance from a landscape feature?

HayleyGlover — Wed, 13 Feb 2019 09:59:36 GMT

Hi there,

I have two datasets. One is a point file of features, each with different size (area) values. The second is zones on a map (polygons) which represent an agricultural land class. (I have also treated this data as a binary coverage (1 = agriculture, 0 = no agriculture, and as a raster of Euclidean distance from agricultural zones).

I want to know if bigger point features are correlated with agricultural zones (or a smaller distance to agricultural zones).

Is the best way to do this simply by a regression or is there a better option like the spatial Kolmogorov-Smirnov test (I have done this but don't think it can account for size of the points, not just location)? I tried the ordinary least squares function once and the results didn't seem quite right.

Thanks so much in advance!

Re: Correlation between size of a point and its distance from a landscape feature?

DanPatterson_Retired — Wed, 13 Feb 2019 10:09:22 GMT

Perhaps a Spearman's Rank Correlation since it can be used to test for a relation between rank size and rank distance rather than absolute size and absolute distance

Re: Correlation between size of a point and its distance from a landscape feature?

LaurenGriffin — Tue, 21 May 2019 20:25:38 GMT

A quick and dirty approach might be to create a scatterplot.