[pdal] large .las files change wheigth

[Cesar Ortega]

Confirmed Andrew.
The dataformat_id =8 at the old file, and 3 into the new file.

Many thanks

El mié., 26 ago. 2020 a las 15:08, Cesar Ortega (<
cesar.ortega.chies at gmail.com>) escribió:

> Many thanks Andrew. I´ll investigate this option and tell you the result.
>
> El mié., 26 ago. 2020 a las 14:14, Andrew Bell (<andrew.bell.ia at gmail.com>)
> escribió:
>
>> I suspect you are writing the output file with a different point data
>> format (dataformat_id option) than the input file. PDAL uses PDRF 3 by
>> default, but you can set the value as you wish or forward the value from
>> the input. Please see the documentation:
>> https://pdal.io/stages/writers.las.html
>>
>> On Wed, Aug 26, 2020 at 3:57 AM Cesar Ortega <
>> cesar.ortega.chies at gmail.com> wrote:
>>
>>> Dear sirs.
>>> The last days, we made a little pipeline to change some metadata from
>>> one 17gb .las file.
>>> It worked correctly, but the file now occupies 12 gb. It seems the file
>>> has all the points, returns, intensity.., but weighs much less.
>>>
>>> We tried it with more files (2gb,30gg, 5gb...) and always weights much
>>> less after the pipeline.
>>>
>>> The pipeline is very simple, only modifies the day of year and saves the
>>> result with another name.
>>>
>>> Could someone tell us why it happens, and if it has any effect on the
>>> quality of the file result?
>>>
>>> Many thanks
>>> _______________________________________________
>>> pdal mailing list
>>> pdal at lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/pdal
>>
>>
>>
>> --
>> Andrew Bell
>> andrew.bell.ia at gmail.com
>>
>
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