[Liblas-devel] Bug?: problem copying file with offset

[Howard Butler]

On Mar 20, 2011, at 10:57 AM, Peder Axensten wrote:

> I have a las-file with non-zero offsets (attached below).
> 
> If I used the code below to copy this file to a las-file I "lose" the offset. 

This is a bug. The points being read need to be rescaled before you write them.  I suspect in the compressed case, this is magically done for you.

Here's an inelegant stop gap.  Please file a bug and I will try to have the writer know when the data should be rescaled.

liblas::HeaderPtr hdr = liblas::HeaderPtr(new liblas::Header());
hdr->SetCompressed(compressed);
liblas::Writer			writer( ofs, *hdr );
...

				while( reader.ReadNextPoint() ) {
					liblas::Point p = reader.GetPoint();
					p.SetHeaderPtr(hdr);
					++count;
					writer.WritePoint( reader.GetPoint() );
				}

>