[R-sig-Geo] countingweights?

2012-11-01 Thread salma anwar
Hi, I am trying to fit a Area-Interaction point process model to my data consisting of log-landing locations in a forest. I get the following warning message alongwith the result of the fitting: 1: In countingweights(id, areas) : Some tiles with zero area contain points 2: In

Re: [R-sig-Geo] how to plot Raster*? problems with raster::plot, fields::image.plot

2012-11-01 Thread Tom Roche
Both sets of problems (with raster::plot and fields::image.plot) are now essentially solved. My main raster-related problems proved to be * confusing the template Raster* produced by projectExtent(...) with the Extent object that the template Raster* contains * using a cited CRS, rather than

Re: [R-sig-Geo] regridding netCDF?

2012-11-01 Thread Tom Roche
ping yang Thu, 18 Oct 2012 22:47:07 -0400 I want to do a transform (re-projection) from a Lambert Conformal Conic (grid, Daymet netCDF data) to Lat/lon grid. Has here someone already done this kind of transformation? No, but I have done a reverse regridding (from lon-lat to LCC), which could

Re: [R-sig-Geo] spatial regression model

2012-11-01 Thread Arnaud Mosnier
Paolo, Using GLS seems a good approach for what you want to do. However, as its names indicates GLS models does not use the OLS approach, so you can't use the classic R square interpretation. I would follow these steps (but if I am wrong please feel free to correct me !!). 1) Run your model in

Re: [R-sig-Geo] regridding netCDF?

2012-11-01 Thread Tomislav Hengl
I've produced some 3D interpolation examples in the experimental package GSIF (under construction). You can actually create some kind of voxels via the SpatialPixelsDataFrame class [http://gsif.r-forge.r-project.org/make.3Dgrid-method.html] and then predict at those locations. Here are some

[R-sig-Geo] Introduction to WELD Products Using Open Source Software

2012-11-01 Thread Giuseppe Amatulli
Hi, at AGU FALL MEETING San Francisco 3-7 December 2012 [1] there will be a course in: Introduction to the Web-Enabled Landsat Data (WELD) Products Using Open Source Software [2] During the workshop we will go through same material stored at http://www.spatial-ecology.net plus a specific