search for: spproj

Hi, I'm trying to use transform my mercator locations into utm but I'm doing something wrong because only x is transformed ... see > xy.sp SpatialPoints: loni lati [1,] -8.85 38.16 [2,] -9.19 37.99 [3,] -9.11 37.97 [4,] -9.06 38.15 [5,] -9.03 37.87 [6,] -9.14 37.81 [7,] -9.09 37.70 [8,] -8.95 37.45 [9,] -9.17 37.37 [10,] -9.00 37.34 Coordinate Reference

Dear All, I need to convert some Northing-Easting coordinates from the Gauss-Krüger system into latitude-longitude. Any suggestions on how to do it? Regards, Marco Marco Giannitrapani Statistical Consultant Tel: +44151373 5945 Email: Internet: http://www.shell.com [[alternative HTML version deleted]]

Hi, I have not been able to find answers to these questions in the FAQs, manuals, or R-help archives. If answers are available somewhere, please direct me to them. 1.) Is there a way to convert a table (e.g. represented as a data frame) to a function, specifying which columns are input and which column is output? It would seem that this would be useful for plotting experimental results,

#################################################################################### We have used maptools to construct state, county, township, census-tract, and zipcode level R maps with an Albers Conical Equal Area projection. We would like to be able to plot the location of weather stations or other point locations on the maps. The data the point locations are in latitude-longitude units

...the spatial coordinates of x + bbox(x), returns the coordinates bounding box of x + overlay, to query the value of e.g. points in polygons or grid (essentially does a point-in-polygon or point-in-raster cell) + spsample, for random sampling methods over a spatial domain. An additional package (spproj) provides coordinate reference system transformation (projection and re-projection) using the PROJ.4 library [2]. Others (will) provide interfaces to GRASS 6 and gdal. A good deal of work has also gone into providing plotting methods using base, grid and lattice graphics, through the spplot functi...

...the spatial coordinates of x + bbox(x), returns the coordinates bounding box of x + overlay, to query the value of e.g. points in polygons or grid (essentially does a point-in-polygon or point-in-raster cell) + spsample, for random sampling methods over a spatial domain. An additional package (spproj) provides coordinate reference system transformation (projection and re-projection) using the PROJ.4 library [2]. Others (will) provide interfaces to GRASS 6 and gdal. A good deal of work has also gone into providing plotting methods using base, grid and lattice graphics, through the spplot functi...