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Spatial data in R M Sumner. Outline Packages Spatial Import and export Maps and projections Big data Community, resources Sweave?

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Presentation on theme: "Spatial data in R M Sumner. Outline Packages Spatial Import and export Maps and projections Big data Community, resources Sweave?"— Presentation transcript:

1 Spatial data in R M Sumner

2 Outline Packages Spatial Import and export Maps and projections Big data Community, resources Sweave?

3 Packages sp, rgdal, maptools, gstat, spdep, spacetime RNetCDF, ncdf, ncdf4 maps, mapdata, Rgooglemaps, dismo spatstat raster adehabitat trip, tripEstimation CRAN Task Views... and much more!

4 R Spatial Basic R graphics and data structures sp - GIS-like data structures Formal Spatial classes Grids – images, rasters, terrains, DEMs Points, lines, polygons, grids with attribute data

5 NetCDF NetCDF in R – ncdf, ncdf4, rgdal (maybe), and RNetCDF R handles multi-dimensional arrays and dimension metadata, packages provide read/write access GIS and NetCDF models have only limited overlap, it’s always difficult

6 Projections rgdal - general input/output and map projection support Transform methods for Spatial objects Raster reprojection is destructive – involving resampling Raster package

7 Trip package Extension of SpatialPointsDataFrame Work with multiple tracks in a single object Functions for filtering, gridding, summary Convert track points to shapefile lines

8 Community R-Sig-Geo, R-Sig-Eco, Animov R-help, R-devel R-downunder Stackoverflow.com R-bloggers.com

9 Resources CRAN Quick R Crantastic! R Reference Card: project.org/doc/contrib/Short-refcard.pdfhttp://cran.r- project.org/doc/contrib/Short-refcard.pdf Ross:


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