Cody

William

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William submitted a Comment to Problem 44893. Create a 3D rotation matrix from roll-pitch-yaw angles

Oh, I see. You have defined the yaw to be around the x-axis, and the roll to be around the z-axis. But there is still a problem with test case 4. I think it should be [-1,-2,0] rather than [1,-2,0].

on 4 May 2019

William received Community Group Solver badge for Randomness

on 2 May 2019

William submitted a Comment to Problem 44761. Lights Out 9 - 5x5, light-only solution? II

Test problem 21 is faulty.

on 2 May 2019

William submitted a Comment to Problem 44764. Lights Out 10 - 5x5, with wrapping, 6 moves

...also, how does the assert(numel(moves)==6) work on the problem that has only 3 moves?

on 30 Apr 2019

William submitted a Comment to Problem 44764. Lights Out 10 - 5x5, with wrapping, 6 moves

The first test suite problem is troublesome because it requires only 3 moves, and the 3-move solution is not necessarily the first one it finds that has 6 moves or less.

on 30 Apr 2019

William submitted a Comment to Problem 44895. Determine roll pitch yaw angles from a 3D rotation matrix

There is a flaw in the test suite. It tests the values in rpy2r rather than the results rpy from the solver's function. Also, the tolerance needs to be widened a bit.

on 29 Apr 2019

William submitted a Comment to Problem 44893. Create a 3D rotation matrix from roll-pitch-yaw angles

The variable name rpy suggests that the order is [roll, pitch, yaw], but that's not correct, is it?

on 27 Apr 2019

William submitted Solution 1783845 to Problem 44881. CowBoy

on 11 Apr 2019

William received Cody5:Hard Master badge

on 8 Apr 2019

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