[R-sig-Geo] polar inertia 2

2016-06-22 Thread Paolo Piras
Sorry for multiple posting, my first message was refused by my server Hi folks, I need to compute the polar inertia of a generalized polygon. It can includes points within the perimeter. Moreover, points are not ordered (i.e. clockwise, etc.). The same is needed in 3D but 2D is sufficient

Re: [R-sig-Geo] experimental covariogram

2016-06-22 Thread Edzer Pebesma
On 22/06/16 16:15, Nick Perpinias wrote: > Dear R-GIS users, > > I am trying to do a performance evaluation/comparison between the > covariogram and semivariogram for certain spatially correlated data. > In particular, I would like to investigate if there is a certain trade off > using either

[R-sig-Geo] experimental covariogram

2016-06-22 Thread Nick Perpinias
Dear R-GIS users, I am trying to do a performance evaluation/comparison between the covariogram and semivariogram for certain spatially correlated data. In particular, I would like to investigate if there is a certain trade off using either of these two tools when for example there is no trend on

[R-sig-Geo] polar intertia of a generalized polygon.

2016-06-22 Thread Paolo Piras
Hi folks, I need to compute the polar inertia of a generalized polygon. It can includes points within the perimeter. Moreover, points are not ordered (i.e. clockwise, etc.). The same is needed in 3D but 2D is sufficient for the moment. Do you know some function that can do that? Thanks in