Description Usage Arguments Value Examples
Brings in a shapefile (from a directory on the computer) as a SpatialPolygonsDataFrame with a data.table as the data attributes.
1 | ShptoSPDF(shp_dir, shp_layer, id_field, all_data = T)
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shp_dir |
The directory where your shapefile is |
shp_layer |
The name of the shapefile (ex: "census_tracts"), with no .shp or any other extension |
id_field |
Character string of the column that is the primary key (what defines polygons as being different from one another) in the shapefile. If a field that is not a primary key is provided, the polygons will be collapsed such that there will be 1 polygon object (possibly multi-part) for each of the primary keys you have identified, but the rest of the data table will no longer attach to the shapefile. |
all_data |
Logical; Whether you want the rest of the data attributes (other than the id_field provided) to remain in the @data slot of the SpatialPolygonsDataFrame. |
A SpatialPolygonsDataFrame with a data.table
1 | shp_to_Rpolygons("C:/Users/username/Documents/spatial_data/","shapfile_name","fipscode")
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