This tool is an implementation of the glmmpql function from RegionalGAM package: https://github.com/RetoSchmucki/regionalGAM/
This function computes a collated index for each year and estimates the temporal trend.
A collated index correspond to the expected value for a year, when taking into account the variation contained among sites.
Here we also add an autoregressive term to account for temporal autocorrelation in the time series.
Outputs
The tool returns the collated index in tabular format.
It also and plot it against year for visualization in an output png file.