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...

5 years ago | 1 answer | 0

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answer

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...

5 years ago | 1 answer | 0

### 1

answer

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...

5 years ago | 1 answer | 0

### 1

answer

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...

5 years 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...

5 years ago | 1 answer | 0

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

5 years ago | 1