Re: [talk-au] Remote mapping of wetlands without local knowledge base on imagery

2020-02-23 Thread cleary
 I suspect this might be a mapping competence problem or possibly a problem 
with the editing tool rather than intent to add incorrect information.  It 
appears to me that the intent might have been to map the area as a wood but it 
has been mapped also as swamp (from the nearby relation).

I once created similar problem quite inadvertently. Depending on the editor 
being used (I prefer Potlatch) relations type=multipolygon can go awry.  When I 
converted relations to type =boundary +  boundary=natural, everything was much 
better behaved and I could see what I was mapping.  This might not be the 
problem in this instance but, in the first instance,  it appears to me that it 
might be a problem in mapping relations.




On Sun, 23 Feb 2020, at 10:41 PM, Warin wrote:
> Hi,
> 
> 
> There has been some remote mapping of the Diamond Beach area based on 
> imagery and descriptive texts. Note the descriptive texts are copyright.
> 
> 
> My contention is that without going there or a correctly licensed source 
> these things cannot be mapped with any certainty, particularly without 
> local knowledge.
> 
> Imagery alone is not enough.
> 
> 
> I refer to;
> 
> https://www.openstreetmap.org/changeset/80818669
> 
> https://www.openstreetmap.org/changeset/80810033
> 
> https://www.openstreetmap.org/changeset/80747704
> 
> https://www.openstreetmap.org/changeset/80736708
> 
> 
> 
> I am afraid this mapper falls into the same category as a past remove 
> mapper who mapped rocks as cliffs in the Snowys.
> 
> 
> My inclination is to remove these objects on the basis that they 
> questionable on the stated sources and the lack of local knowledge of 
> the mapper.
> 
> 
> Thoughts?
> 
> 
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>

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[talk-au] Remote mapping of wetlands without local knowledge base on imagery

2020-02-23 Thread Warin

Hi,


There has been some remote mapping of the Diamond Beach area based on 
imagery and descriptive texts. Note the descriptive texts are copyright.



My contention is that without going there or a correctly licensed source 
these things cannot be mapped with any certainty, particularly without 
local knowledge.


Imagery alone is not enough.


I refer to;

https://www.openstreetmap.org/changeset/80818669

https://www.openstreetmap.org/changeset/80810033

https://www.openstreetmap.org/changeset/80747704

https://www.openstreetmap.org/changeset/80736708



I am afraid this mapper falls into the same category as a past remove 
mapper who mapped rocks as cliffs in the Snowys.



My inclination is to remove these objects on the basis that they 
questionable on the stated sources and the lack of local knowledge of 
the mapper.



Thoughts?


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