[pdal] writers.gdal produces "corrupt" PNGs?

[Adam Steer]

HI Vladimir - can you check whether a PNG with just one ‘band’ (ie ‘max’ OR ‘idw’ but not both) works?

That’s all I can think of… I actually need to test this as well :) Next week…

Cheers

Adam


> On 8 Jul 2017, at 3:18 am, Vladimir Sandoval <vladimir.sandoval at yandex.com> wrote:
> 
> Trying to make a PNG from a .laz file to display in Firefox.
>  
> {
>   "pipeline":[
>     "somefile.laz",
>     {
>      "type":"writers.gdal",
>       "resolution": 1,
>       "output_type":"idw",
>       "output_type":"max",
>        "gdalopts":"of=PNG,outsize=128 128",
>        "gdalopts":"co=WRITE_METADATA_AS_TEXT=NO",
>       "filename":"outputfile.png"
>     }
>   ]
> }
>  
> The pipeline runs and produces a PNG. I cannot view the PNG with Firefox, MS Paint, or Windows Photo Viewer, HOWEVER, I can open it and view it in Opticks (https://sourceforge.net/projects/opticks/).
>  
> Opticks shows a single band grey scale image, probably representative of the original .laz.
>  
> Anything I'm doing wrong here producing the "corrupted" PNG?
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