topic Re: Calculating Correlation between 2 (or more) Rasters? in Spatial Statistics Questions

Calculating Correlation between 2 (or more) Rasters?

SimonJackson — Thu, 01 Jun 2017 12:44:14 GMT

With Vector data I can understand correlations between layers using regression tools such as OLS.

What tools would be suitable to understand the correlation/relationship between two (or more) different rasters?

I saw Band Collection Stats but I think this just outputs a table. Was hoping to have an accompanying spatial output as well.

Any pointers would be great.

Re: Calculating Correlation between 2 (or more) Rasters?

JayantaPoddar — Thu, 01 Jun 2017 15:34:09 GMT

Re: Calculating Correlation between 2 (or more) Rasters?

DanPatterson_Retired — Thu, 01 Jun 2017 18:16:11 GMT

Yes do read that discussion on 'correlation' and 'regression'. It is generally a term badly used. Simple visuals showing co-location can be accomplished using a variety of tools. If you have nominal or ordinal data, you won't be using regression at all and if you want to go with non-parametric tests of statistics there are few built in. the Combine tool in SA will at least allow you to determine whether certain pairings/groupings of attributes occur.

I might be best to describe the nature of your data before useful recommendations can be made.

Re: Calculating Correlation between 2 (or more) Rasters?

SimonJackson — Sun, 04 Jun 2017 09:21:10 GMT

Thanks Dan - the combine tool and your comments in the other post are very helpful.

Re: Calculating Correlation between 2 (or more) Rasters?

DanPatterson_Retired — Mon, 05 Jun 2017 01:05:57 GMT

I will mark it 'Assumed Answered ' then