Read a shapefile into a TDA spatial structure

sdshp reads an ESRI shapefile – the .shp, its .shx index and the .dbf of attributes – and writes TDA's spatial data file, which is what the rest of the spatial commands work on.

Usage

tda_read_shapefile(file, dir = tempfile("tda"), ...)

Arguments

file

path to the shapefile, with or without the .shp extension. The .shx and .dbf beside it are read too.

dir

working directory for the run.

...

further options for sdshp.

Value

A tda_spatial object, as tda_spatial returns.

See also

Other spatial analysis: plot.tda_spatial(), tda_map(), tda_polygons(), tda_read_dbf(), tda_read_spatial, tda_sd(), tda_sd_analyses, tda_sd_ps3(), tda_spatial()

Examples

if (requireNamespace("sf", quietly = TRUE)) {
  nc <- tda_read_shapefile(system.file("shape/nc.shp", package = "sf"))
  print(tda_sd_info(nc))
  plot(nc)
}
#> Call: tda_sd_info(nc)
#> 
#> Cases: 108 
#> 
#>  points lines polygons      xmin     ymin      xmax     ymax
#>       0     0      108 -84.32385 33.88199 -75.45698 36.58965