las conversion from feet to meters

[flabbergast...@yahoo.com]

Hi

I downloaded Pennsylvania lidar data. It is as a las file. But it is in feet. I need to convert it to meters. I was told that las2las would do it.

The area I need is on the corner of four tiles. So, do I have to use lasmerge, then lastile followed by las2las?

Or can las2las do the whole process in one step?

I'm able to get the files into left hand corner. I filled out NAD83, NAVD88,Geoid03 in projection tab. Using the clip function on the bottom I can put a red rectangle around the area I want. I can view it. Choose where I want to copy it. But, I get stuck after clicking on RUN and START. I thought that using UTM as an output would do the trick. So far I failed.

The black screen tells me: could not find c:\program files\las2las\lastools\bin\file_list. 8884.txt

The number is always different with any attempt.

Could anybody please give me an advise? What am I missing?

Petr

Note that not all of LAStools is "free" (see http://lastools.org/LICENSE.txt)
contact 'martin....@rapidlasso.com' to clarify licensing terms if needed.
lasview -lof file_list.4728.txt -inside 2596632.75 444376.125 2605624 456555.218
8
Could Not Find C:\Program Files\las2las\LAStools\bin\file_list.4728.txt
lasmerge -lof file_list.4728.txt -inside 2596632.75 444376.125 2605624 456555.21
88 -o "merged8-1.las" -sp83 PA_S -feet -vertical_navd88_geoid03
using state plane 'PA_S' (NAD83 LCC) 'NAD83 / Pennsylvania South'
Could Not Find C:\Program Files\las2las\LAStools\bin\file_list.4728.txt

[Martin Isenburg]

Hello,

could you post a link (a link!!! please do not attach) to a small tile of example data? It will be easier to develop the correct command line for your case if you give us some sample data to test with.

Regards,

Martin @rapidlasso

On Wed, Aug 2, 2017 at 3:06 AM, flabbergasted.sassafras via LAStools - efficient tools for LiDAR processing <last...@googlegroups.com> wrote:

Hi

I downloaded Pennsylvania lidar data. It is as a las file. But it is in feet. I need to convert it to meters. I was told that las2las would do it.

The area I need is on the corner of four tiles. So, do I have to use lasmerge, then lastile followed by las2las?

Or can las2las do the whole process in one step?

I'm able to get the files into left hand corner. I filled out NAD83, NAVD88,Geoid03 in projection tab. Using the clip function on the bottom I can put a red rectangle around the area I want. I can view it. Choose where I want to copy it. But, I get stuck after clicking on RUN and START. I thought that using UTM as an output would do the trick. So far I failed.

The black screen tells me: could not find c:\program files\las2las\lastools\bin\file_list. 8884.txt

The number is always different with any attempt.

Could anybody please give me an advise? What am I missing?

Petr

Note that not all of LAStools is "free" (see http://lastools.org/LICENSE.txt)

contact 'martin.isenburg@rapidlasso.com' to clarify licensing terms if needed.

lasview -lof file_list.4728.txt -inside 2596632.75 444376.125 2605624 456555.218
8
Could Not Find C:\Program Files\las2las\LAStools\bin\file_list.4728.txt
lasmerge -lof file_list.4728.txt -inside 2596632.75 444376.125 2605624 456555.21
88 -o "merged8-1.las" -sp83 PA_S -feet -vertical_navd88_geoid03
using state plane 'PA_S' (NAD83 LCC) 'NAD83 / Pennsylvania South'
Could Not Find C:\Program Files\las2las\LAStools\bin\file_list.4728.txt

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[Paul Manley]

Hello,

I see two different instances of people asking to do this, but no resolution posted.

Is it as simple now as using las2las -target_feet or -target_meter to do the conversion?

Thanks,

Paul

On Saturday, August 12, 2017 at 8:02:50 AM UTC-5 martin....@gmail.com wrote:

Hello,

could you post a link (a link!!! please do not attach) to a small tile of example data? It will be easier to develop the correct command line for your case if you give us some sample data to test with.

Regards,

Martin @rapidlasso

On Wed, Aug 2, 2017 at 3:06 AM, flabbergasted.sassafras via LAStools - efficient tools for LiDAR processing <last...@googlegroups.com> wrote:

Hi

I downloaded Pennsylvania lidar data. It is as a las file. But it is in feet. I need to convert it to meters. I was told that las2las would do it.

The area I need is on the corner of four tiles. So, do I have to use lasmerge, then lastile followed by las2las?

Or can las2las do the whole process in one step?

I'm able to get the files into left hand corner. I filled out NAD83, NAVD88,Geoid03 in projection tab. Using the clip function on the bottom I can put a red rectangle around the area I want. I can view it. Choose where I want to copy it. But, I get stuck after clicking on RUN and START. I thought that using UTM as an output would do the trick. So far I failed.

The black screen tells me: could not find c:\program files\las2las\lastools\bin\file_list. 8884.txt

The number is always different with any attempt.

Could anybody please give me an advise? What am I missing?

Petr

Note that not all of LAStools is "free" (see http://lastools.org/LICENSE.txt)

contact 'martin....@rapidlasso.com' to clarify licensing terms if needed.

[Martin Isenburg]

Hello,

no. Just switching of units is not implemented. You can simply scale and then overwrite the old projection information with new projection information. But the -target_feet or -target_meter only work together with a reprojection.

One way would be to go from what you have now to '-target_longlat' or '-ecef' and then from long lat to a new projection that is in feet (or meter).

Regards,

Martin

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