How can I calculate square root of a matrix using IDL?

Question

I am trying to calculate square root of a large dimension matrix using IDL but failed. Any solution or tips would be highly appreciated.

How is it failing? What have you tried? You may want to refer to [this post](https://stackoverflow.com/help/how-to-ask) to get more/better answers to your question (though it seems @mgalloy knows what you're referring to). — sappjw, Jan 08 '21 at 13:57

score 2 · Answer 1 · answered Jan 07 '21 at 18:43

2

Use my routines mg_alogm and mg_expm to compute:

sqrt_A = mg_expm(0.5 * mg_alogm(A))

answered Jan 07 '21 at 18:43

mgalloy

1 Answers1