> This week, I see 0.1 mm as totally acceptable rounding/etc. error. 1 mm is > probably actually ok but socially unacceptable and 1 cm is IMHO a real > problem.
For end-users, 1 cm measurement precision is the best they can get for points without a permanent GNSS station. To make sure the transformation accuracy is negligible, we require software to give correct results within 1 mm for the transformation to/from Dutch CRSs. To check this fairly with PROJ, 0.1 mm accuracy is indeed good enough. For permanent GNSS stations a few mm is the best measurement precision we can get. So, for transforming GNSS station coordinates with PROJ, 0.1 mm accuracy is good enough too. Jochem Disclaimer: De inhoud van deze e-mail is vertrouwelijk en uitsluitend bestemd voor de geadresseerde(n). Gebruik, openbaarmaking, vermenigvuldiging, verspreiding en/of verstrekking van deze informatie aan derden is niet toegestaan. Op al onze producten en diensten zijn onze algemene leveringsvoorwaarden van toepassing [https://www.kadaster.nl/algemene-leveringsvoorwaarden]. Disclaimer: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited. Our general terms and conditions of delivery apply to all our products and services [https://www.kadaster.com/general-terms-and-conditions]. _______________________________________________ PROJ mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/proj
