[pdal] converting las to tif

[thejus kambi]

Hello Jelto,

looks like you are trying to generate DTM from las file. Can you try the
method provided in this documentation.

https://pdal.io/workshop/exercises/analysis/dtm/dtm.html

Warm Regards,
Thejus


On Wed, Sep 18, 2019 at 7:36 AM Andrew Bell <andrew.bell.ia at gmail.com>
wrote:

>
>
> On Wed, Sep 18, 2019 at 8:25 AM Jelto Buurman <
> jelto.buurman at googlemail.com> wrote:
>
>> Hi,
>> I want to use pdal to convert lidar data to tif. If I am using the
>> following
>> pipline:
>> {
>>         "pipeline":[
>>         {
>>                 "type" : "readers.las",
>>                         "filename" : "linputfile.laz"
>>         },
>>         {
>>                 "type":"filters.range",
>>                         "limits":",Classification[2:2]"
>>         },
>>         {
>>                 "type": "writers.gdal",
>>                         "resolution": 1,
>>                         "radius": 1.5,
>>                         "filename":"outputfile.tif"
>>         }
>>                 ]
>> }
>>  I get a tif file, but the interpolation method is idw. So ever edge in
>> the
>> surface will be fased and the peeks will also be cutted of.
>>
>
> We only do the interpolation methods described in the documentation:
> https://pdal.io/stages/writers.gdal.html
>
>
>> If I am using the following pipeline:
>>
>> {
>>         "pipeline":[
>>         {
>>                 "type" : "readers.las",
>>                         "filename" : "inputfile.laz"
>>         },
>>         {
>>                 "type":"filters.range",
>>                         "limits":",Classification[2:2]"
>>         },
>>         {
>>                 "type":"filters.delaunay"
>>         },
>>                 {
>>                "type": "writers.ply",
>>                 "filename": "output.ply",
>>                 "faces": true
>>         }
>>                 ]
>> }
>>
>
>
>>  I  get a  very big textfile, witch I even cannot load into QGIS. Does
>> anyone have an advise?
>
>
> You can write binary PLY.  Try:
>
>    {
>                "type": "writers.ply",
>                 "filename": "output.ply",
>                 "faces": true,
>                  "storage_mode": "little_endian"
>         }
>
> You can also set the precision when writing text output.  See:
> https://pdal.io/stages/writers.ply.html
>
> --
> Andrew Bell
> andrew.bell.ia at gmail.com
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> pdal at lists.osgeo.org
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