[gdal-dev] Extra Decimal places added to ASCII gdal_translate mosaic

Jonathan Moules jonathanmoules at warwickshire.gov.uk
Tue Mar 11 03:20:33 PDT 2014


Hi Even,
Thanks for the information.


> >
> > I tried the Float64 but the values are identical (16 significant figures)
> > even though the filesize is predictably larger.
> >
> > I guess I'll have to make do, but it does introduce the problem of False
> > Precision.
>
> Very few formats take into account precision. And the GDAL/OGR model has
> currently no explicit support for that.
>

My comment about False Precision was referring to the engineering/science
problem:
https://en.wikipedia.org/wiki/False_precision

In our case this is height data, so now folks will see heights down to...
femtometres?! You and I know that's obviously wrong, but not all users are
quite so technical.

Thanks again,
Jonathan

-- 
This transmission is intended for the named addressee(s) only and may 
contain sensitive or protectively marked material up to RESTRICTED and 
should be handled accordingly. Unless you are the named addressee (or 
authorised to receive it for the addressee) you may not copy or use it, or 
disclose it to anyone else. If you have received this transmission in error 
please notify the sender immediately. All email traffic sent to or from us, 
including without limitation all GCSX traffic, may be subject to recording 
and/or monitoring in accordance with relevant legislation.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20140311/39b8cfe4/attachment.html>


More information about the gdal-dev mailing list