incorrect info given in the doc: writing pcd

[csukuangfj]

Your Environment

• PCL Version: the master branch

Context

The doc http://pointclouds.org/documentation/tutorials/writing_pcd.php#writing-pcd
gives the structure of the type

// \brief A point structure representing Euclidean xyz coordinates.
struct PointXYZ
{
  float x;
  float y;
  float z;
};

which is incorrect.

Expected Behavior

It should give the correct memory layout, otherwise it is confusing for beginners.

[taketwo]

This is indeed not correct, however I'm not sure if a beginner needs to know about extra padding and union tricks. I would propose to remove the snippet and just say:

The type of each point is set to pcl::PointXYZ, which is a structure that has x, y, and z fields.

@SergioRAgostinho?

[csukuangfj]

I agree. No info is better than bad info.

[SergioRAgostinho]

Ok by me.