Kadir, There are a few point types that contain arrays. Look at pcl/point_types.h for an example. You're right in the sense that this has to be done at compile time and not at runtime. Cheers, Radu. -- http://pointclouds.org On 02/13/2011 10:52 AM, kadir wrote: > > Radu, > > Thank you for the links. I partially solved the problem and skipped the part > regarding the type-definition for the moment. What I did is as follows: > > template > struct FeaturePoint{ > float a; > float b; > float c; > float d[how_many] > }; > > #define HOW_MANY an_int_value > POINT_CLOUD_REGISTER_POINT_STRUCT( > pcl::FeaturePoint, > (float, a, a) > (float, b, b) > (float, c, c) > (float[HOW_MANY],d, d)); > > But of course, this is not sth that I want at the end. Since I cannot change > values of macros or const declarations at run time, I cannot add different > sized "FeaturePoint"s to the PointCloud2 structure. I have to define each > FeaturePoint having different sized "d" member and register them one by one > to achieve this purpose. > > Later, > > -Kadir- > >