[OSM-talk] OTG rule, borders & mountains existing | Re: Crimea situation - on the ground

[Martin Koppenhoefer]

Am Fr., 14. Feb. 2020 um 11:18 Uhr schrieb Colin Smale <
colin.smale at xs4all.nl>:

> Yes I realise that but attention must be paid to all possible sources of
> precision leakage.
>
> What use would proprietary parameters be? If they were used, are relevant
> and kept private, this would impede the consumption of the data by any
> clients. All GIS files must include, by value or by reference, the relevant
> CRS, otherwise the contents can not be interpreted properly, can they? Or
> are you thinking of the situation in China where they have a
> state-controlled/licenced transformation?
>
>


First, proprietary parameters does not mean you cannot have access to them,
but you might have to pay for it. Secondly, you do not need the parameters
for use of the data in a certain CRS but you need them for high precision
conversions into another CRS.

Cheers
Martin
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk/attachments/20200214/07337b30/attachment.htm>