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 427,443 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 13,588 times.

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Last 365 days

This package has been downloaded 4,114,142 times in the last 365 days. Whoa! That's more downloads than an AI-generated meme in a tech-savvy group chat. Truly legendary! The day with the most downloads was Mar 25, 2025 with 19,166 downloads.

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