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4 results for “from:Carlos Alberto Arnillas”

importing GRIDs from ArcView or ASCII rasters
Carlos Alberto Arnillas · Dec 28, 2005 · r-sig-geo

Hello I am trying to import a set of raster files (in grid format, supported by Arc View 3.x) to make some logistic regressions. I did a small program to import them from a ASCII format, but it's...

connectivity analysis for spatial information: from raster to graph
Carlos Alberto Arnillas Merino · May 26, 2010 · r-help

hello... I am trying to develop an analysis similar to the proposed by Urban and Keitt (2001) for connectivity between patches in a landscape. To do that, my first problem is to convert the raster map, into a graph (with...

measuring distances between several patches in an area
Carlos Alberto Arnillas · Jan 9, 2016 · r-sig-geo

Hello I have been trying to find a function to measure the distance between several patches simultaneously. I tried with the raster packages iterating by every patch, measuring the distance from there to every single pixel out of the patch...

Random forest for forest cover classification
Carlos Alberto Arnillas · Aug 13, 2019 · r-sig-geo

Hello Enoch I think segmentation is a good idea, it will group pixels by similar characteristics, creating polygons (don't forget to validate the generated polygons!). then you can do classification on those polygons using polygons properties (including shape indices...

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