Re: [R-sig-Geo] contour data

On Tue, 26 May 2009, John Callahan wrote: I have a DEM (2 meter spacing, IMG file format) and I'd like to create contour vector data output, shapefiles would be great. I just downloaded R 2.9.0. Looking for more info, I keep finding references to the contour function in the grahics package,

Re: [R-sig-Geo] SP Spatial List operation - error in R 2.9 not in R 2.8 (download example)

On Tue, 26 May 2009, rick reeves wrote: Hello List: While writing an R script to display and subsample a raster image, I encountered an error in the Spatial_. classes that occurs in R ver 2.9, but not in R ver 2.8. Thanks for a fully documented case. The key NEWS item in R 2.9.0 here is

[R-sig-Geo] contour data

I have a DEM (2 meter spacing, IMG file format) and I'd like to create contour vector data output, shapefiles would be great. I just downloaded R 2.9.0. Looking for more info, I keep finding references to the contour function in the grahics package, but that seems like it only produces plots

[R-sig-Geo] SP Spatial List operation - error in R 2.9 not in R 2.8 (download example)

Hello List: While writing an R script to display and subsample a raster image, I encountered an error in the Spatial_. classes that occurs in R ver 2.9, but not in R ver 2.8. Note: I installed both versions within the last 5 days, and ran the update.packages() command after each installation

[R-sig-Geo] Info: SAGA vs GRASS workshop, University of Zurich 29 August & 30 August 2009

Title: Automated analysis of elevation data in R+SAGA/GRASS Venue: University of Zurich, Irchel Campus, 29 August & 30 August 2009 Workshop moderators: Tomislav Hengl / Carlos H. Grohmann Registration fees: 150 CHF (PhD students) For more info: http://2009.geomorphometry.org/ Summary: This work

[R-sig-Geo] nearest neighbour list from distance matrix, etc.

Hi everyone, I have been constructing simple linear models of seabird colony size as a function of habitat availability. Given that my data obviously contain a spatial component, I would like to check whether both my response and residuals exhibit any spatial auto-correlation. I understand that

Re: [R-sig-Geo] spplot - polygons with colored borderlines

On Tue, 26 May 2009, Ingo Holz wrote: Hi Roger, thank you for your reply. After sending my email to R-sig-Geo I recognized that you answered a similar question somedays ago. However, if I use col = "transparent" some of my polygons are only "colored dots in the space". Is there no posibility

[R-sig-Geo] spplot - polygons with colored borderlines

Hi Roger, thank you for your reply. After sending my email to R-sig-Geo I recognized that you answered a similar question somedays ago. However, if I use col = "transparent" some of my polygons are only "colored dots in the space". Is there no posibility to get filled colored polygons and c

Re: [R-sig-Geo] spplot - polygons with colored borderlines

On Tue, 26 May 2009, Ingo Holz wrote: Hi, I am using function spplot (library sp) to plot polygons: spplot(SPDF, "var", col.regions=topo.colors(100)) SPDF is a SpatialPolygonsDataFrame Some of my polygons are very small and you can not see the color of the polygon (only the black borderlines

[R-sig-Geo] Converting downloaded PNG images using RgoogleMaps to SpatialGridDataFrame class (proj4string?)

Hi all, Thanks to Markus Loecher and colleagues we can now easily obtain background maps from Google Earth and use it for plotting/interpretation of spatial data. This runs pretty smoothly (e.g. a map of the Netherlands): > library(RgoogleMaps) # obtain the API key and save into the home fol

[R-sig-Geo] spplot - polygons with colored borderlines

Hi, I am using function spplot (library sp) to plot polygons: spplot(SPDF, "var", col.regions=topo.colors(100)) SPDF is a SpatialPolygonsDataFrame Some of my polygons are very small and you can not see the color of the polygon (only the black borderlines). I could use spplot(as(SPDF,