[R] Grouped data objects within GLS and Variogram

Dear R Help, I am having difficulty using Variogram within GLS to examine spatial structure of nested data. My data frame consists of ecological measurements of a forest, in which three landscape positions ("landposi") are compared. Each landscape position is replicated five times ("replicat"

Re: [R] Grouped data

Check out the meta and rmeta packages. On Sun, Apr 27, 2008 at 8:45 PM, David Scott <[EMAIL PROTECTED]> wrote: > > I have been given some data in summary form, as means and standard > deviations for a number of studies. I want to combine some studies to > obtain overall means and standard deviatio

[R] Grouped data

I have been given some data in summary form, as means and standard deviations for a number of studies. I want to combine some studies to obtain overall means and standard deviations and also to carry out t-tests. Obviously I can write code to do this but most likely someone has doone this alr