[GRASS-user] newbie: processing lidar with r.in.xyz

[andrew haywood]

Dear List,

i am currently enjoying the flexibility of using r.in.xyz to process lidar
data over native forests in Victoria, Australia.Thank you hamish for such a
great tool.
At this stage I have 'binned' my data into 20m cells and calculated a number
of metrics (including 13 vegetation height percentiles p5 p10 p20 .. p90,
p95, p99) based on the z values.
What I was wondering is how can I calculate the mean intensity for the
associated height percentiles.

To get around this I have written a script in a proprietary stats package to
create the intensity metrics. However, I would prefer to use Grass and
opensource tools to do this binning

Any suggestions would be appreciated!!!!

My data is in the following format

x|y|ground|intensity|class|canopy_top|height
410774.45|5820999.93|773.3|23|10|766.0983886719|7.20161
410763.07|5820999.9|802.27|2|10|763.9434814453|38.3265
410765.47|5820999.94|773.11|90|10|764.2877807617|8.82222
410758.09|5820999.95|807.99|47|10|762.8372192383|45.1528
410748.12|5820999.93|760.89|8|10|760.5731811523|0.316819
...
...
...

I suspect I should start to learn python.


regards

Andy
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