[Talk-ca] [Imports] Ottawa, Canada Tree Import

James james2432 at gmail.com
Wed Jun 28 16:11:42 UTC 2017

If you can assume that OSM data is 100% correct then you can also assume
that data from a city GIS department that have done their jobs correctly is
also 100% correct.

On Wed, Jun 28, 2017 at 12:04 PM, James <james2432 at gmail.com> wrote:

> Rory said:
> What if OSM data is wrong? What if OSM says "The river bank goes up to
> here" and it doesn't, and that would make the tree in the river.
> Which is a valid point because you are suggesting:
> The usual approach would be to automatically analyze the data in
> combination with the OSM data to identify the cases with possible
> conflicts and then to manually review only those.
> To which I am replying that is an invalid way of validating data because
> that would be a presumtion that OSM Data is 100% correct and accurate,
> which it is not(aligned to misaligned imagery is an example of why it could
> be incorrect).
> Maybe understanding the logic flaw I'm trying to express in your
> "analysis" would be a good place to start.
> On Wed, Jun 28, 2017 at 11:56 AM, Christoph Hormann <osm at imagico.de>
> wrote:
>> On Wednesday 28 June 2017, James wrote:
>> > Well that analysis is incorrect in itself as others have stated, OSM
>> > can be wrong. So a river bank, building, etc may not be properly
>> > drawn. So with that being said what you are saying is the only viable
>> > way to accept an import is to manually review every single item in
>> > the dataset.
>> It would not be a bad idea to actually read what i write before claiming
>> it means something different than what i said.
>> --
>> Christoph Hormann
>> http://www.imagico.de/
>> _______________________________________________
>> Imports mailing list
>> Imports at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/imports
> --
> 外に遊びに行こう!

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