numDeriv

Methods for calculating (usually) accurate numerical first and second order derivatives. Accurate calculations are done using 'Richardson’s' extrapolation or, when applicable, a complex step derivative is available. A simple difference method is also provided. Simple difference is (usually) less accurate but is much quicker than 'Richardson’s' extrapolation and provides a useful cross-check. Methods are provided for real scalar and vector valued functions.

Last 30 days

This package has been downloaded 430,003 times in the last 30 days. That's a whole lot of downloads. Somewhere, a librarian is trying to figure out why more bandwidth is needed. The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 16,824 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 4,107,900 times in the last 365 days. Perhaps it's time to consider hiring a personal assistant to manage the newfound fame. That's an absurd number of downloads. The day with the most downloads was Mar 25, 2025 with 19,166 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.