Very nice !
please explain the problem
I am puzzled by the function you had used here (and also used in Solution 116288). It is no longer working on Cody (see Solution 1461162), and I cannot find documentation for it (except in a Toolbox — both by 'manual' online searching and using the "help" command). Is it a built-in function that's been removed, or perhaps part of a demo?
The dist function I have available now is located at C:\Program Files\MATLAB\R2016b\toolbox\nnet\nnet\nndistance\dist.m
Maybe it's no longer there in R2017b (Cody, at this moment), or the neural networking toolbox was available back then, and not now in Cody. I don't know.
Thanks. It seems indeed the "dist" function was previously available on Cody ...even though it "shouldn't have worked" (because it is & was part of a Toolbox). See comment by Ned Gully on 13 Feb 2014 at Problem 317.
I like this solution
Can you explain the problem. Walking from [3 4 2] to [0 0 2] gives (3-0)+(4-0) = 7 units. Then from [0 0 2] to [0 1 2] gives 1 unit. From [0 1 2] to [1 1 2] gives 1 unit and finally from [1 1 2] to [1 1 20] gives 18 units. So sum of distance is 7+1+1+18 = 27. Is it right?
Walking from [3 4 2] to [0 0 2] is the same as walking DIRECT (along a 'diagonal') from the FIRST point that is 3 metres East, 4 metres North and 2 metres Elevated from the Origin to a SECOND point that is 0 metres East, 0 metres North and 2 metres Elevated from the Origin. As the Elevation hasn't changed in this leg of the trip, the distance reduces to the length of the hypotenuse of a right-angled triangle whose other sides are 3m and 4m, namely a length of 5 metres.
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