gps

General P-splines are non-uniform B-splines penalized by a general difference penalty, proposed by Li and Cao (2022) doi:10.48550/arXiv.2201.06808. Constructible on arbitrary knots, they extend the standard P-splines of Eilers and Marx (1996) doi:10.1214/ss/1038425655. They are also related to the O-splines of O'Sullivan (1986) doi:10.1214/ss/1177013525 via a sandwich formula that links a general difference penalty to a derivative penalty. The package includes routines for setting up and handling difference and derivative penalties. It also fits P-splines and O-splines to (x, y) data (optionally weighted) for a grid of smoothing parameter values in the automatic search intervals of Li and Cao (2023) doi:10.1007/s11222-022-10178-z. It aims to facilitate other packages to implement P-splines or O-splines as a smoothing tool in their model estimation framework.

Last 30 days

This package has been downloaded 189 times in the last 30 days. More than a random curiosity, but not quite a blockbuster. Still, it's gaining traction! The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 2 times.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 2,879 times in the last 365 days. That's enough downloads to impress a room full of undergrads. A commendable achievement indeed. The day with the most downloads was Jul 21, 2024 with 129 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.