Displaying 2 results from an estimated 2 matches for "spatialpointdataframe".
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spatialpointsdataframe
2007 Sep 20
2
Superimposing vector polygons over raster grid in a plot
Hello:
I would like to superimpose vector polygons (state outlines) from a
Shape file on top of a satellite image,
imported into a SpatialGridDataFrame from GEOTIFF via gdal_translate and
readGDAL.
When I plot polygon and point shape files in R, into
SpatialPointDataFrame and SpatialPolygonDataFrame,
the two feature sets line up geographically, so it seems logical that a
SpatialGridDataFrame should behave
in the same way.
From my initial research, the spplot function is the correct function
for plotting grids/images with axes and
annotation.
The big question is...
2011 Oct 05
2
kriging shapefiles
Hi! Im new to R and I need to interpolate a shapefile using kriging. I've been able to plot/read the shapefile using the package maptools or rgdal. I've searched the internet for sample codes but most of the kriging codes that I've found done in R is done using txtfiles or CSVs. An example could be of great help. Thanks.
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