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Reply | Forward Message #28 of 61 |
Hi again,

I had some questions to pose to Rob/group...

Is there a similar function in R to the backslash operator on matrices  -- "\" or "mldivide()" -- in Matlab? Essentially it will try to solve the simultaneous equation Ax=B for x by x=A\B in the least squares sense. I am looking for a way to calculate the DLT coefficients in a 3D study.

If R is open source and (if I understand correctly) it is possible to view the alogarithms, how does one view that source code? For example, I want to view how the F ratio is computed by aov(), can I view that code somewhere?

Finally if I want certain scripts to run on start up how do I go about that? For example, set the working directory to something other than the default "C:/Program Files/R/R-2.5.0/bin"

Cheers
--
Nick Flyger

Senior Biomechanist
Centre for Biomechanics,
Institut Sukan Negara Malaysia,
Komplex Sukan Negara,
Bukit Jalil, Sri Petaling
PO Box 10440, 50174 Kuala Lumpur,
MALAYSIA

Sat Jul 21, 2007 6:29 am

nickflyger
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Message #28 of 61 |
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Hi again, I had some questions to pose to Rob/group... Is there a similar function in R to the backslash operator on matrices -- "\" or "mldivide()" -- in...
Nick Flyger
nickflyger
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Jul 21, 2007
8:49 am

Hi Nick, Hooray some questions. 1. To solve a systems of equations have a look at solve(), or better qr.solve() or chol2inv() depending on how much structure...
gerrobrein
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Jul 22, 2007
8:29 am
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