can not save xyzrgb

[hu luwa]

i have a problem for saving rgb to las file with laslib. 

LASwriteOpener lasWriteOpener;

lasWriteOpener.set_file_name(sPathOut.c_str());

LASwriter* laswriter = lasWriteOpener.open(&lasheader);

..... 

laspoint.set_rgb(&tRGB[0]);

when the program is running over ,i can not save the color of each point .

Anybody can help me ?

[Martin Isenburg]

Hello,

to write our colored points you will need to set-up your LASpoint and your LASheader such that colors are supported as shown in the pseudo code below:

[...]

      int point_type = 2;

      int point_size = 26;

      LASheader header;

      header.point_data_format = point_type;

      header.point_data_record_length = point_size;

     LASpoint point;

      if ((strstr(file_name, ".laz") || strstr(file_name, ".LAZ"))

      {

        header.laszip = new LASzip;

        laszip->setup(point_type, point_size);

        point.init(&header, header.laszip->num_items, header.laszip->items, &header);

      }

      else

      {

        point.init(&header, point_type, point_size, &header);

      }

      LASwriteOpener writeOpener;

      writeOpener.set_file_name(file_name);

      LASwriter* writer = writeOpener.open(&header);

      while (something is true)

      {

          point.set_x(x);

          [...]

          point.set_rgb(&RGB[0]);

          writer->write_point(&point);

          writer->update_inventory(&point);

      }

      writer->update_header(&header, TRUE);

      writer->close();

      delete writer;

[...]

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