# Tools to Work with Projections

## Documentation for package ‘crstools’ version 1.0.0

- DESCRIPTION file
- User guides, package vignettes and other documentation
- Package NEWS
- Package README

## Help Pages

choose_gcp | Function to choose the Ground Control Point (GCP) on an image
extract_coords | Extract coordinates
find_gcp_coords | Find the coordinates (longitude and latitude) of the ground control points (GCPs) in a given image.
geom_tissot | Add Tissot's indicatrix to a map
georeference_img | Georeference an Image using Ground Control Points (GCPs)
suggest_crs | Suggestions for map projections depending on the extent