I guess the question is: "safe for what?" - if numerical errors are a
problem without rescaling, then you should do it. You might be able to
choose the rescaling factor such that these errors are minimized.
On 25/01/2023 18:37, Steve Gutreuter wrote:
Is it safe to re-scale sf geometry coordinates from meters to
kilometers using, for example:
sfobj$geometry <- sfobj$geometry / 1000
It seems to work, but I understand too little about spatial data to
know whether that practice is actually safe. I am working with spatial
data in a continental-scale equidistant conic projection, and the units
are meters. It seems that kilometers would be better suited stochastic
partial differential equation modeling on a finite-element mesh, but
maybe that is a moot point.
Any and all advice will be much appreciated.
Thanks!
--
Edzer Pebesma
Institute for Geoinformatics
Heisenbergstrasse 2, 48151 Muenster, Germany
Phone: +49 251 8333081
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