Rank: 4283 based on 5 downloads (last 30 days) and 1 file submitted
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Steeve AMBROISE

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Company/University
Faculte des Sciences - Universite d'Etat d'Haiti
Lat/Long
19.0121, 72.3012

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Professional Interests:
spectral element method, unbounded domain, acoustics, elastodynamics, Dirichlet-to-neuman, Perfectly Matched Layer, Infinite Element Method, Structural Analysis, Structural Vibration

 

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02 Feb 2009 Linearly spaced multidimensional matrix without loop Generates a N-dimensional matrix of linearly equally spaced points between the matrices d1 and d2. Author: Steeve AMBROISE kronecker tensor prod..., linearly spaced, multidimensional matr..., linear algebra, multidimensional oper... 5 4
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4.7 | 4 ratings
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03 Feb 2009 NDLINSPACE (v1.1, feb 2008) Generalized LINSPACE: linearly spaced values between mutliple points Author: Jos (10584)

I tried to compare this function to linspaceNDim with this code:

clear
a=rand(20,30,5,10,19,4);
b = rand(size(a));
N = 5;

tic, c1 = linspaceNDim(a, b, N);toc
clear c1

tic, c2 = ndlinspace(a, b, N);toc

I find that linspaceNDim is 20 times faster then ndlinspace.

Steeve.
31 Jan 2009 maxmax find the max value and position from a multi-dimensional matrix Author: Simon

Another way, if you want to use the eval function and manipulate strings:

NDim = ndims(X); maxim = 'X'; Indices = ' ';
for i= 1:NDim,
    maxim = strcat('max(',maxim,')');
    Indices = strcat(Indices, 'I', num2str(i),', ');
end
Max = eval(maxim);
Indices = strcat('[', Indices(1:end-1), ']');
eval([Indices, '= ind2sub(size(X), find(X==Max));']);
Ind = eval(Indices);

It works even if several elements have the largest value.

You can use the preceding example.

S.A.
Comments and Ratings on Steeve's Files View all
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04 Feb 2009 Linearly spaced multidimensional matrix without loop Generates a N-dimensional matrix of linearly equally spaced points between the matrices d1 and d2. Author: Steeve AMBROISE Jos (10584)
03 Feb 2009 Linearly spaced multidimensional matrix without loop Generates a N-dimensional matrix of linearly equally spaced points between the matrices d1 and d2. Author: Steeve AMBROISE Youri

Great program!

Jos, you have to change your rating.

Youri.
03 Feb 2009 Linearly spaced multidimensional matrix without loop Generates a N-dimensional matrix of linearly equally spaced points between the matrices d1 and d2. Author: Steeve AMBROISE Jos (10584)

The error indeed seems to be fixed.
02 Feb 2009 Linearly spaced multidimensional matrix without loop Generates a N-dimensional matrix of linearly equally spaced points between the matrices d1 and d2. Author: Steeve AMBROISE Gigi

I tried it after modifications. It works perfectly.

Fine.
02 Feb 2009 Linearly spaced multidimensional matrix without loop Generates a N-dimensional matrix of linearly equally spaced points between the matrices d1 and d2. Author: Steeve AMBROISE Jos (10584)

>> linspacendim(0,1)
??? Error using ==> cat
CAT arguments dimensions are not consistent.
Error in ==> LINSPACENDIM at 39
y = cat(NDim+1, Sum1 + Sum2, d2);

This error occurs for every 1-by-N-by-M-... matrix. There are some other issues as well. For instance, in the help:
- LINSPACENDIM or LINSPACEMAT?
- n = 1 in the example?
Top Tags Applied by Steeve
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kronecker tensor product, linear algebra, linearly spaced, multidimensional matrices, multidimensional operations
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
02 Feb 2009 Linearly spaced multidimensional matrix without loop Generates a N-dimensional matrix of linearly equally spaced points between the matrices d1 and d2. Author: Steeve AMBROISE kronecker tensor prod..., linearly spaced, multidimensional matr..., linear algebra, multidimensional oper... 5 4
  • 4.66667
4.7 | 4 ratings

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