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Better scale/offset computation #48

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abellgithub opened this issue Jan 27, 2021 · 2 comments
Closed

Better scale/offset computation #48

abellgithub opened this issue Jan 27, 2021 · 2 comments

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@abellgithub
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The scale/offset that gets written into an output LAS file depends on how the value transits PDAL. If any changes occur between the time the value is provided to PDAL and the time the LAS file is written, the output to ept.json might not match that of the LAS files. The only way to address this with certainty is to read the scale/offset from a LAS file and use that value as the output to ept.json making sure that sufficient precision is used.
@abellgithub
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In addition, PDAL reads the scale in an imprecise way, which can cause problems with some data that has been made to fit exactly in the 32-bit address space.

@abellgithub abellgithub mentioned this issue Feb 24, 2021
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@abellgithub
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abellgithub commented Jan 24, 2022 •
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This was addressed with version 2.3 of PDAL. Re-open if more needs to be done.
PDAL/PDAL#3235

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