Hi!
when I compiled the following code I got the error, "YOU_TRIED_CALLING_A_VECTOR_METHOD_ON_A_MATRIX". (with VS2010, Eigen v3.05)
MatrixXd m = MatrixXd::Random(100,100);
MatrixXd anglesMatrix1(i_Points.size(),i_Points.size());
all the lines having MatrixXd type have errors such as the above two lines.

I cannot find any mistake in my code. please somebody help me. what's the problem ? it might be a bug ?

Thanks in advance.
- Yeonchool.

my code is as follows.

Code: Select all

"Histogram.hpp"
#include <Eigen/Dense>
#include <Eigen/Core>
#include "typedef.h"
#include <math.h>
#include "opencv2/core/core.hpp"
#include <stdio.h>

using namespace Eigen;
using namespace std;
Math_Function cmathf;
using Eigen::MatrixXd;

namespace ShapeContext {
   class Histogram
    {
   public:
      static const int sr_MinPointsForPolygon_ = 3;
      static const int sr_NoInit_ = -1;

      static vector<MatrixXd> CreateHistogram(vector<cv::Point>& i_Points, int i_NumOfThetaBins, int i_NumOfBins, double o_Avg)
        {
            // compute theta angles
         assert(i_Points.size()>0);

         MatrixXd m = MatrixXd::Random(100,100);
         MatrixXd anglesMatrix1(i_Points.size(),i_Points.size());
         anglesMatrix1 = setAngleMatrix(i_Points, i_NumOfThetaBins);
         
            // compute cell in bin
            MatrixXd radiusMatrix(i_Points.size(), i_Points.size());;
         setRadiusMatrix(i_Points, i_NumOfBins, o_Avg, radiusMatrix);

         vector<MatrixXd> histogram;
         setBinsPointReference(anglesMatrix1, radiusMatrix, i_NumOfThetaBins, i_NumOfBins, i_Points.size(), histogram);


            return histogram;
        }


the error is as follows.

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d:\program files\pcl 1.3.1\3rdparty\eigen\include\eigen\src/Core/Matrix.h(241): error C2338: YOU_TRIED_CALLING_A_VECTOR_METHOD_ON_A_MATRIX
1>          d:\program files\pcl 1.3.1\3rdparty\eigen\include\eigen\src/Core/Matrix.h(237) : while compiling class template member function 'Eigen::Matrix<_Scalar,_Rows,_Cols>::Matrix(__w64 int)'
1>          with
1>          [
1>              _Scalar=double,
1>              _Rows=-1,
1>              _Cols=-1
1>          ]
1>          d:\users\ycp\project\objectmodeler_gui_mp v2.1\src\Histogram.hpp(18) : see reference to class template instantiation 'Eigen::Matrix<_Scalar,_Rows,_Cols>' being compiled
1>          with
1>          [
1>              _Scalar=double,
1>              _Rows=-1,
1>              _Cols=-1
1>          ]
1>
1>Build FAILED.


as indicated in the debug output, which is line 18?

thanks for your kind reply.

it is
MatrixXd m = MatrixXd::Random(100,100); <--- line 18

however, all lines which have MatrixXd have same errors.
MatrixXd anglesMatrix1(i_Points.size(),i_Points.size());
MatrixXd radiusMatrix(i_Points.size(), i_Points.size());

johnm1019 wrote:as indicated in the debug output, which is line 18?

It seems you are calling the ctor Matrix(size) somewhere which is indeed only for vectors. PErhaps in the setAngleMatrix, or setBinsPointReference functions?

Ggael, Thanks a lot for your kind reply !

I found the origin of error due to your guidance. it was caused by totally different class.
the structure is as follows.

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            CSContext (class)
               |     \         
              TPS   Histogram (classes)
   (error's origin)    (compiler pointed that this class had error)


In TPS class, I had used square brackets instead of parentheses  like

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MatrixXd newMap(x,y);       
newMap[fsIndex, sr_Xaxis] = ...


that was my mistake

by the way, why the compiler was pointing other location as an error ?
anyway now it works well.

bravo ggael !!

ggael wrote:It seems you are calling the ctor Matrix(size) somewhere which is indeed only for vectors. PErhaps in the setAngleMatrix, or setBinsPointReference functions?