Reminder: Friends don't let friends invert matrices There's almost always a better way. @MATLAB has backslash and decomposition objects @Python has np.linalg.solve Here's a graph from Gregory Gundersen showing differences in runtime.
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Just had a code clinic today, one component of which mentioned inverting large matrices (in C++). Outside of my field of expertise, but directed them to this as something to consider.
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Well they were calling a C++ fn from R to invert the matrices.
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I'm not sure what #rstats equivalent of @MATLAB's backslash operator is but maybe someone on here knows?
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Replying to @walkingrandomly @robadob @MATLAB @Python
You probably want `solve()`: solve package:base R Documentation Solve a System of Equations Description: This generic function solves the equation ‘a %*% x = b’ for ‘x’, where ‘b’ can be either a vector or a matrix.

May 25, 2022 · 2:49 PM UTC

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