stConstruct with multiple SpatialPolygonsDataFrame objects
Hi, Can anyone provide an example of using stConstruct() with multiple SpatialPolygonsDataFrame objects? I have created the latter by reading in multiple shapefiles, one shapefile per year. Each shapefile contains polygons at several levels of an attribute. I want to plot these polygons for levels of say 1, 5, 10 using stplot, where the panels are years. I am having trouble understanding how to do this type of task where the spatial coordinates vary across time.
Pacific Northwest National Laboratory
scott.waichler _at_ pnnl.gov