1
我有一個Eigen MatrixXd對象,名爲v,我在嘗試訪問此矩陣內容時遇到了一些問題。當我只在控制檯打印內容時(如代碼中所示),工作得很好。當我嘗試使用內容,錯誤顯示出來:Eigen C++斷言失敗
斷言失敗:(行> = 0 & &行<行()& &山坳> = 0 & &山坳<的cols()),函數運算符(),文件/usr/local/Cellar/eigen/3.2.4/include/eigen3/Eigen/src/Core/DenseCoeffsBase.h,線337
ChosenPoint ** points = new ChosenPoint*[width];
for (int i = 0; i < width; i++)
{
points[i] = new ChosenPoint[height];
for (int j = 0; j < height; j++)
{
points[i][j].setPoint(i, j, false);
points[i][j].setNumberOfFrames(numberOfFrames);
}
}
Matrix<double, 2, 1> v = (aT * a).inverse() * aT * b;
if (v.rows() == 2 && v.cols() == 1)
{
points[x][y].setFlow(v(0,0), v(1,0), frame);
}
而且我ChosenPoint類:
typedef struct point
{
double x;
double y;
bool isValid;
} point;
class ChosenPoint
{
public:
ChosenPoint()
{
}
~ChosenPoint()
{
}
void setNumberOfFrames(int numberOfFrames)
{
this->flow = new point[numberOfFrames];
for (int i = 0; i < numberOfFrames; i++)
{
point f;
f.x = 0.0;
f.y = 0.0;
this->flow[i] = f;
}
}
void setPoint(int x, int y, bool isValid)
{
this->pt.x = (double) x;
this->pt.y = (double) y;
this->pt.isValid = isValid;
}
point getPoint()
{
return this->pt;
}
point* getFlow()
{
return this->flow;
}
void setFlow(double &xFlow, double &yFlow, int &position)
{
this->flow[position].x = xFlow;
this->flow[position].y = yFlow;
}
void updateFlow(int position)
{
this->flow[position].x = 2*this->flow[position].x;
this->flow[position].y = 2*this->flow[position].y;
}
void updateFlow(double xFlow, double yFlow, int position)
{
this->flow[position].x = xFlow;
this->flow[position].y = yFlow;
}
point pt;
point *flow;
};
你的問題可能與'points'有關# – user4759923
如果我使點[p] .setArray(0.0,0.0)或任何其他雙精度,工作也一樣好。這個錯誤是指向Eigen的東西,不是嗎? – PamelaTabak
你能提供[MCVE]嗎? –