misc/proj-data.md

In brownag/NASIStools: Tools for the USDA-NRCS National Soil Information System (NASIS)

1. Download latest proj-data from https://download.osgeo.org/proj/proj-data-1.7.tar.gz

2. Extract data to a known path. A good option and the default for PROJ on Windows would be $LOCALAPPDATA/proj/. Another option which is the default for the sf package on Windows is the R library instance of the installation of sf ./proj directory file.path(find.package("sf"), "proj"). On Mac/Linux the default are the proj share directories in /usr/local/share/proj or ~/.local/share/proj.

3. Restart your R session, reload {sf}

4. Append the path to your proj-data from step 2 to your search paths. You may want to add this to your .Rprofile.

sf::sf_proj_search_paths(c(sf::sf_proj_search_paths(), "C:/Users/Andrew.G.Brown/AppData/Local/proj/")

If you re-install sf your existing data will be replaced with the package bundle. So, if you use your R library instance as the data location you will need to put your proj data back in place after each install. If you use your local application data / "share" folder then the files can persist between installs.

1. Compare the results of running the ?best_proj_pipeline before and after setting the search path to point at your complete data package.

brownag/NASIStools documentation built on Nov. 21, 2023, 11:34 a.m.