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October 21, 2013, 11:33 
Defining a Matrix in OpenFOAM1.6ext

#1 
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Daniel
Join Date: Mar 2013
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Hello foamers
I am trying to define a Matrix in my OpenFOAM solver but I have a few problems. I try to describe my problem with an example: Assuming I want to define a Matrix in the solver, this is what I do: Matrix<scalar> A(n, m, 0.0); Now when I want to compile the solver, it gives me the following error: Code:
setInterfaceDisplacement.H:98: error: wrong number of template arguments (1, should be 2) /opt/OpenFOAM/OpenFOAM1.6ext/src/OpenFOAM/lnInclude/Matrix.H:54: error: provided for ‘template<class Form, class Type> class Foam::Matrix’ regards 

November 26, 2013, 11:45 

#2 
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Camille Bilger
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Hi,
I am encountering the same problem and would be grateful if you could share how you resolved this problem. Thank you very much. 

November 26, 2013, 18:11 

#3 
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Bruno Santos
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Greetings to all!
Actually, while I was tracking kmou's posts, this previous thread gave the hint: 1.5 => 1.6: Matrix template  ODETest does not compile The solution seems to be to use "scalarSquareMatrix" instead of "Matrix<scalar>". A bit more explanation:
Best regards, Bruno
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Last edited by wyldckat; March 27, 2016 at 04:25. Reason: repaired link 

November 27, 2013, 12:46 

#4 
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Daniel
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thanks for the suggestion...
I had resolved that issue a few weeks ago. I have changed the declaration as follow: Matrix <scalarField,scalar> A (n,m)  squareScalarMatrix is working fine on square matrices but how can I define a matrix with one column or one row? like this one: Matrix <scalarField,scalar> A (n,1) or A (1,n)  OK I have fixed the last one by using rectangular matrix 

November 27, 2013, 14:26 

#5  
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Daniel
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Quote:
#include "scalarSquareMatrix.H" >> for square type matrix if you want to define a square matrix: A (n,n) and initiate it with 0 scalarSquareMatrix A(n, 0.0); #include "RectangularMatrix.H" >> for rectangular matrix if you want to define a rectangular matrix: A (n,m) RectangularMatrix <scalar> A(n,m); 

December 2, 2013, 06:06 

#6 
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Camille Bilger
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Thank you Daniel and Bruno for your replies.
So new classes of matrices have been created, such as SquareMatrix and RectangularMatrix, which effectively correspond do the "Form" that is required. Thus, for each Matrix<scalar> that I have, I will need to make a decision as to if it is a Square matrix, or a Rectangular matrix or Diagonal matrix etc... 

March 23, 2016, 11:19 
Matrix with different dimensions for different elements (kg,m,N,etc)

#7 
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Muhammad Usman
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Hi guys i have a problem related to matrices. I have to define and write a matrix in which every element have different dimensions. for example 1st element has dimensions in kilogram 2nd in meters 3rd in second like that. Please guide me how can i do that.


March 27, 2016, 02:50 

#9 
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Muhammad Usman
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Thank you. but there should be a way...... coz..........


March 27, 2016, 06:27 

#10 
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Bruno Santos
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If you had provided an example I could have worked with, it would have be easier/faster for me to figure it out.
Anyway, this is an example of how to do it: Code:
SquareMatrix<dimensionedScalar> hmm(3); hmm[0][0].dimensions().reset(dimLength); hmm[0][0] = dimensionedScalar("cookie1",dimLength,3.0); hmm[0][1] = 10.0; hmm[0][2] = 4.0; hmm[1][0] = 2.0; hmm[1][1] = 3.0; hmm[1][2] = 10.0; hmm[2][0] = 2.0; hmm[2][1] = 6.0; hmm[2][2] = 1.0; 

March 27, 2016, 06:54 

#11 
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Muhammad Usman
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March 27, 2016, 09:42 

#13 
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Muhammad Usman
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its matrix for mass in mass damper spring system. actually i am working with some kind of fluid and vehicle dynamics interface. Yes this matrix is gonna be multiplied by a vector


March 27, 2016, 10:04 

#14  
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Bruno Santos
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Hi Muhammad,
Quote:
There is a thread explaining how to provide information, so that this kind of vague exchange of information doesn't happen: How to give enough info to get help Best regards, Bruno 

April 16, 2016, 20:55 

#15  
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Santiago Marquez Damian
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Quote:
Regards!
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Santiago MÁRQUEZ DAMIÁN, Ph.D. Research Scientist Research Center for Computational Methods (CIMEC)  CONICET/UNL Tel: 543424511594 Int. 7032 Colectora Ruta Nac. 168 / Paraje El Pozo (3000) Santa Fe  Argentina. http://www.cimec.org.ar Last edited by wyldckat; April 17, 2016 at 10:28. Reason: added quote, because this post was moved from another thread with the same question 

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