Here's a little python script that does just that for the latest development
trunk (raw_time is not available in 1.2.1)
from liblas import file
f = file.File('test.las')
p0 = f[0]
for p in f:
if abs(p.raw_time - p0.raw_time) > 2.0:
print 'flight break'
p0 = p
http://trac.liblas.org/samples/test.las has a number of breaks that meet this
criteria
On May 5, 2010, at 11:54 AM, Black, Michael (IS) wrote:
> If you have multiple flights in one file you should be able to use the time
> tag as long as they've carried it along.
>
> Just make sure the data is in time order and look at the delta-t. Anything
> more than a few seconds would be another flight or scan area.
>
> Michael D. Black
> Senior Scientist
> Northrop Grumman Mission Systems
>
> Michael D. Black
> Senior Scientist
> Northrop Grumman Mission Systems
>
>
> From: [email protected] on behalf of Howard Butler
> Sent: Wed 5/5/2010 8:35 AM
> To: Marcos Gerardo Castro
> Cc: [email protected]
> Subject: [Liblas-devel] Re: Separating Multiple Flights into a single Flight
>
>
> On May 5, 2010, at 1:52 AM, Marcos Gerardo Castro wrote:
>
> >
> > Hi Guys,
> >
> > Just wondering if you know a method to separate multiple flights from a
> > Airborne Laser Sensor.
>
>
> Marcos,
>
> Please provide more detail of what you are to accomplish. Are "flights" a
> variable in LAS files that can be used to organize the data?
>
> Howard_______________________________________________
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