Hi List,
I'm trying to better understand the "Number of Decimals" setting that can
be found on the Global settings page, and also on a per-layer basis for
vector layers.
Because all our data is in British National Grid, we've set the global
setting to 2 - that's a precision down to the millimetre, more than enough.
However, during a conversation with one of our users, we realised - what
happens to folks using WGS:84 - Lat/Lon to two decimal places is pretty
much useless (precise to about 1.1km on the north/south, slightly more so
east/west due to our latitude).
So I've been testing to see what happens with WFS GetFeature queries using
the Layer Preview page:
- Excel, GeoJSON, CSV, and shapefile all ignore the setting and return as
many decimals as they feel like.
- GML (at least the ones that worked), does honour it.
So my questions:
- Is it worth considering a setting on a per-EPSG basis? (I know there are
a lot of EPSG's, but I suspect few are interchangeable/used on the same
system)
- Is it supposed to be used only for GML or carried over to the other WFS
export formats as well?
Cheers,
Jonathan
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