[Liblas-devel] GPS time and intensity?

[Mateusz Łoskot]

Jason Woolard pisze:
> Two more quick questions. I can't seem to pull the intensity from a LAS 
> file. The documentation shows intensity in the LASPoint class. Has that 
> been implemented? I'm getting a Traceback error in Python 2.5 with 
> intensity while x,y,z return_number and classification are all coming 
> across fine.

Jason,

I'm not an expert of the bindings for Python but as I see, intensity 
getter/setter is missing:

http://liblas.org/browser/trunk/python/liblas/point.py

Let's wait for Howard to confirm.

> Also, the GPS time seems to be rounding to the nearest second . My input 
> file has data to 3 decimal places. Is there any way to carry that 
> precision over?

As I can tell from what I see in the code, get_time method returns 8 
elements of struct_time (range [0:7]). All these elements are integers
and number of seconds is represented as integer. By the nature of 
functions like localtime, gmtime, etc. fractions of second is lost.

http://liblas.org/browser/trunk/python/liblas/point.py#L172

Aren't LiDAR observations (pulses) measured in seconds with fractions 
ignored?

Best regards,
-- 
Mateusz Loskot, http://mateusz.loskot.net
Charter Member of OSGeo, http://osgeo.org