nullspace algorithm in MATLAB

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rskr...@gmail.com

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Sep 8, 2021, 5:24:45 PM9/8/21

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Dear All,

What is the algorithm used by nullspace command in MATLAB? I was not able find any information on the website.

Regards

R Sandeepkumar

Joel Andersson

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Sep 21, 2021, 9:19:01 PM9/21/21

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This is not a CasADi question. But you can find the nullspace of a matrix with a QR factorization.

Joel

rskr...@gmail.com

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Sep 21, 2021, 9:24:43 PM9/21/21

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Dear Joel,

I was referring to the nullspace function in CasADi (Link and screenshot attached - http://casadi.sourceforge.net/v1.9.0/api/html/d4/d09/classCasADi_1_1Nullspace.html)

Regards

Sandeep

nullspace.png

Joel Andersson

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Sep 21, 2021, 9:41:19 PM9/21/21

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This is a question for Joris.The documentation you referenced is long deprecated (v 1.9.0), but the nullspace(MX), nullspace(SX), nullspace(DX) are indeed still in CasADi.