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Hi, I've been trying to convert a vector kml-file to an ESRI shape with readOGR(), but I don't manage to read the kml-file. Can anyone help me with this? Thnx, Henk Sierdsema SOVON Vogelonderzoek Nederland / SOVON...

Hi Ivan, Can you tell me what the purpose is of your modelling? Is it simply producing spatial predictions based on a logistic model or do you want to incorporate spatial autocorrelation in the models? Given your last mail it...

Hi Hans, Please have a look at paragraph 2.6 (page 41) on spatial polygons in the ASDAR-book. Here you will find an example of converting a shoreline into polygons. Henk Henk Sierdsema SOVON Vogelonderzoek Nederland / SOVON Dutch Centre...

I have installed Expat XML Parser, but how do I rebuilt GDAL/OGR? Henk Henk Sierdsema SOVON Vogelonderzoek Nederland / SOVON Dutch Centre for Field Ornithology Rijksstraatweg 178 6573 DG Beek-Ubbergen The Netherlands tel: +31 (0)24 6848145 fax: +31...

Hi Maurizio, If your main interest is distribution modelling I would skip the GAM's and their inherent problems with overfitting, covariates with high correlations, etc. and use something like Random Forests or Generalized Boosting Models/Boosted Regression Trees. They...

Hi, You can download the geostat-manual from http://dusk2.geo.orst.edu/gis/geostat_analyst.pdf and http://www.ci.uri.edu/projects/geostats/Using_ArcGIS_Geostat_Anal_Tutor.pdf and the spatial-analyst manual from http://www.maproom...

Hi Mark, The 'ASDAR'-book (Bivand et al, Applied Spatial Data Analysis with R http://www.asdar-book.org/) contains a lot of examples of desease mapping and modelling. From the website you can also download example data sets and...

Hi Juliane, I have found an Arcview3-extension that converts kml to shapes (http://arcscripts.esri.com/details.asp?dbid=14988) and that works fine. But it would like to solve the problem in the scripting-environment of R. Henk...

Hi Augustin, I've encountered the same problem after an update of the rgdal-package. I have resolved the problem by removing the rgal-folder in the library and replacing it by an older version of November 2009. You can...

Hi Rub?n, Thanks for defining 'small' better. For me a dataset up to a thousand points is a small dataset, but for most people this is quite a big data set... Henk Henk Sierdsema SOVON Vogelonderzoek Nederland / SOVON Dutch...

Hi Alex, You have to assign the plot to a temporary variable (like tmp <- spplot(...)) and then use print(tmp1) to save it in the png-file so somethink like: tmp <- spplot(...) png(filename=...) print(tmp) dev.off() Succes! Henk...

Hi Rob, You could start with the maps available within R. Here is some text taken from page 88-89 from the ASDAR-book: " It is often attractive to make use of the spatial databases in the maps (comm: and...

Hi Ivan, I have uploaded two papers from Tom Hengl et al on this subject for you. This should give you a good idea how to solve the problem. www.sovon.nl/temp/Hengl1.pdf www.sovon.nl/temp/Hengl2...

Hi Paul, Here is the requested information: > sessionInfo() R version 2.8.0 (2008-10-20) i386-pc-mingw32 locale: LC_COLLATE=Dutch_Netherlands.1252;LC_CTYPE=Dutch_Netherlands.1252;LC_MONETARY=Dutch_Netherlands.1252;LC_NUMERIC=C;LC_TIME...

Hi, Thanks for the all the information on kml's and rebuilding gdal which sets me on a new paths using stuff like VC++, source codes, etc. I started this 'excercise' because we receive more and more kml-files (from...

Hi Roger, You're right of course: replacing the library with an older version works, but it's definitely not chique. So I looked into the problem a little bit deeper, following up on the remarks of Agus. It turns...