How to define a new point type?

> Yes, I dis as the tutorial tells, but some errors occurs.
> My codes are as follows:
>
> #include <pcl/point_types.h>
> #include <pcl/point_cloud.h>
> #include <pcl/io/pcd_io.h>
> #include <Eigen/Dense>
> struct MyPointType
> {
> PCL_ADD_POINT4D;
> Eigen::Matrix2f ccdescriptor;
> EIGEN_MAKE_ALIGNED_OPERATOR_NEW
> } EIGEN_ALIGN16;
> POINT_CLOUD_REGISTER_POINT_STRUCT(MyPointType,
>                              (float, x, x)
>      (float, y, y)
>      (float, z, z)
>                             (Eigen::Matrix2f, ccdescriptor, ccdescriptor))
> int
> main (int argc, char** argv)
> {
> pcl::PointCloud<MyPointType> cloud;
> cloud.points.resize (2);
> cloud.width = 2;
> cloud.height = 1;
> //float a[2][2]={1,1,2,2};
> //float b[2][2]={2,3,1,3};
> cloud.points[0].x = cloud.points[0].y = cloud.points[0].z = 0;
> cloud.points[1].x = cloud.points[1].y = cloud.points[1].z = 3;
> cloud.points[0].ccdescriptor<<1,1,2,2;
> cloud.points[1].ccdescriptor<<2,3,1,2;
> pcl::io::savePCDFile ("test.pcd", cloud);
> std::cout<<cloud.points[1].ccdescriptor&lt;&lt;std::endl;
> }
>
> The errors are as follows:
>
> 2>..\main.cpp(17): error C2039: 'value' : is not a member of
> 'pcl::traits::asEnum<T>'
> 2>          with
> 2>          [
> 2>              T=Eigen::Matrix<float,2,2>
> 2>          ]
> 2>..\main.cpp(17): error C2065: 'value' : undeclared identifier
> 2>..\main.cpp(17): error C2057: expected constant expression
>
> Thanks very much. I am expecting your reply.
>
>
>
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