Hello,

I tried to typedef my own Matrices, but the calculation with them fails.
I got the following static assert from eigen:

YOU_MIXED_UP_MATRICES_OF_DIFFERENT_SIZES

Here is the code:

BasisCalculation.h

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#include "Eigen"
#include "Core"

typedef Eigen::Matrix<double, 1, 8> EigenDemandVector;
typedef Eigen::Matrix<EigenDemandVector, Eigen::Dynamic, 1> EigenDemandVectorMatrix;

class BasicCalculation
{
public:
    BasicCalculation();

    static EigenDemandVector calc(EigenDemandVectorMatrix demandVectorMatrix);
};


BasisCalculation.cpp

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#include "BasicCalculation.h"

BasicCalculation::BasicCalculation()
{
}

EigenDemandVector BasicCalculation::calc(EigenDemandVectorMatrix demandVectorMatrix)
{
    EigenDemandVector ret=(EigenDemandVector)((demandVectorMatrix.cast<double>()).colwise().sum());
    ret/=demandVectorMatrix.rows();
    return ret;
}


EigenDemandVector is has alway 1 row and 8 cols.
Therefore EigenDemandVectorMatrix has 8 cols and x rows.
Summing colwise should result in a vector with 1 row and 8 cols (same size as EigenDemandVector).

Could anyone help me?
Cheers Helm

"demandVectorMatrix.cast<double>()" is invalid. You should rather use the following typedef:

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typedef Eigen::Matrix<double, Eigen::Dynamic, 8> EigenDemandVectorMatrix;


and

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return demandVectorMatrix.colwise().mean();


Thank you very much, your solution runs!

You meant

ggael wrote:

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return demandVectorMatrix.colwise().sum();