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---
name: maptools
description: R maptools package for spatial data tools. Use for reading/writing spatial data (deprecated, use sf).
---
# maptools
Tools for handling spatial objects (deprecated - use sf).
## Note
maptools was retired in October 2023. Use sf instead.
## Migration to sf
```r
# Old maptools way
library(maptools)
shp <- readShapePoly("data.shp")
writePolyShape(shp, "output.shp")
# New sf way
library(sf)
shp <- st_read("data.shp")
st_write(shp, "output.shp")
```
## Reading Shapefiles
```r
# Old way
readShapePoly("polygons.shp")
readShapeLines("lines.shp")
readShapePoints("points.shp")
# New sf way (all types)
st_read("data.shp")
```
## Coordinate Operations
```r
# Old way
coordinates(sp_obj)
bbox(sp_obj)
# New sf way
st_coordinates(sf_obj)
st_bbox(sf_obj)
```
## Conversion
```r
# Old way (sp to data.frame)
as.data.frame(sp_obj)
# New sf way
as.data.frame(sf_obj)
st_drop_geometry(sf_obj)
```
## Point in Polygon
```r
# Old way
over(points, polygons)
# New sf way
st_join(points, polygons)
st_intersection(points, polygons)
```
