Tag Info

Hot answers tagged scilab

Accepted

Matrix multiplication not working in Scilab

-2.776D-17 equals $-2.776\cdot 10^{-17}$, which is indeed very small and for all practical purposes is zero. I think scilab is OK
• 570

Matrix multiplication not working in Scilab

In your example inv(P) is not equal to [-1/6,1/3;1/6,2/3]. The problem is that before 6.1 version, Scilab was sometimes ...
Accepted

Calculating camera calibration matrix with Scilab

I found the answer. The videos I was looking at didn't mention a very important detail. The QR factorization needs to be applied to the inverse of the first three columns of P. The resulting K is also ...

(Lack of) Availability of Finite-Difference library for simple 2D PDEs

I know this is a little bit late, but there's a third party library in Python which solve PDEs using FD, it is called findiff. Check it out.
Probably you accumulated rotations wrong. At each step, you have a working matrix $D$ that starts from $D=A$ and should converge to a diagonal matrix, and a matrix $Q$ that accumulates all rotations ...