Community Profile # cyril

### MathWorks MOOC Program

6 total contributions since 2014

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Question

How can I get elegantly an upper triangle random matrix (0 elsewhere)?
I have seen the triu and tril functions, but I can't use them to set to 0: A = rand(4); tril(A)=0; % won't work any i...

ongeveer 5 jaar ago | 1 answer | 0

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Question

Simple calculations giving high imprecisions
I'm doing the following simple code, that aims to find a point position knowing distances in 2D but the outputs is far from t...

ongeveer 5 jaar ago | 1 answer | 0

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Question

gaussian kernel smoothing, how to optimize parameter sigma?
Hi, my question is how to find an optimal standard deviation for the gaussian kernel filter smoothing? too large, we are lo...

meer dan 5 jaar ago | 1 answer | 0

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Question

Does matlab have matrix broadasting
This x=[1:3]'; x.^(1:5) would work on Octave thanks to <https://www.gnu.org/software/octave/doc/interpreter/Broadcastin...

meer dan 5 jaar ago | 1 answer | 0

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Question

A logical indexing for row-wise max
I'm wondering if there is anything simpler than: x = [2 3;3 1] [a,b]=max(x, [], 2); % now return the matrix containin...

meer dan 5 jaar ago | 1 answer | 0

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Answered
Defining function handles in MATLAB
> f = @(x) 2*x^3+7*x^2+x; > f(0) 0 surprising no one mentioned anonymous functions...

meer dan 5 jaar ago | 1