Re: [R] correlation value and map

From: Zoltan Kmetty <zkmetty_at_gmail.com>
Date: Wed 10 Jan 2007 - 14:17:59 GMT

Hi Jenny!

So if i understand your datafile corect you have 960 case for a year. Any you have 43 years.. Yes?

I'm not sure you should use correlation in this situation because of the autocorrelation of the data. There are big autocorrelation on spatial data's like what you use, and there are also a very big autocorrelation in time series data. I think you have to decompose your time series, and you have to cut down, the trend (and maybe some kind of sesonality), and than for the residuals you should do a correlation. You have to filter out the autocorrelation on the spatial data too, some way..

And because of the above problems, don't calculate correlation for the entierly databases!

bye,
Zoltan

        [[alternative HTML version deleted]]



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Thu Jan 11 03:19:15 2007

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Wed 10 Jan 2007 - 16:30:32 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.