Re: [Talk-us] hydrology Alaska

[ANT Berezhnyi]

+10 to what AlaskaDave said

I myself want to be beautiful and accurate,
I make with accuracy 1 point on 1..2 meters, on the exact perimeter of the
lake (accuracy 30 ... 50 centimeters from the coastline)
then I am simplifying (because it requires
https://www.openstreetmap.org/user/bdistsoe
https://www.openstreetmap.org/changeset/52811016#map=14/60.8274/-164.9563)

Simplification creates such a crap, as you led me to an example

if I do not make it easier - I will be blocked again (((


--
2017-10-11 06:56:40 UTC bdiscoe Hi, I ran simplify with a 90cm threshold.
That is very conservative for a remote, wild area of mud and tundra. As for
accuracy, I ran the JOSM validator and fixed many of the issues you left,
with multipolygon ways intersecting each other, overlapping ways, and many
other problems. It is fixed now...
--

Define the trouble please what you want to have quality,
because the simplification script is a standard simplification of JOSM
(unchanged)

*The basis I use is:*
Bing:
bing[22]:http://www.bing.com/maps/

DigitalGlobe Premium:
tms[22]:https://{switch:a,b,c,d}.
tiles.mapbox.com/v4/digitalglobe.316c9a2e/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqM293YnJ5MTAwajIzMnF0bmV4dnV1MW4ifQ.psvzzOez33BOH8xmRiJZWg


DigitalGlobe Standard:  (if on DG-premium clouds)
tms[22]:https://{switch:a,b,c,d}.
tiles.mapbox.com/v4/digitalglobe.0a8e44ba/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoiZGlnaXRhbGdsb2JlIiwiYSI6ImNqM293Y3Y5ZjAwaWgycW55ZXFncHk0a3QifQ.6Kprj_J4oDmXqV97RricwA


*I look forward to the answer to what is the understanding of how exactly
it is necessary for the region of Alaska to carry out the mapping of
hydrology.*

*Until there is a final agreed answer,* I will put roads in the reserves,
and correct the inaccuracies of the coastline (editing existing lines)



thnx

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[Talk-us] hydrology Alaska

[ANT Berezhnyi]

(sorry for my english)

question:

On 2017-10-16 02:33:13 UTC velmyshanovnyi

http://www.hdyc.neis-one.org/?velmyshanovnyi

wrote:

===

so on the question ...

Is it possible to vectorize the USGS on the OSM if there is no Landsat, and
everything else in the clouds, or in the snow, or the quality is bad ...

Hello velmyshanovnyi , There are a number of questions here. One is "is it
possible to vectorize the USGS". Another is "is it a good idea to do so".

I'd suggest that you discuss what is the best source of imagery in this
region with other mappers, such as "imagico" who commented on
https://www.openstreetmap.org/changeset/52947504 . It may be that you need
to use several sources and combine them manually because none of them are
perfect. Also I would suggest asking on the talk-us and talk-ca mailing
lists for advice.

With regard to "is this a good idea" other mappers think it is not. You
need to persuade them that it is. You need to explain what your process is.
Your comment on https://www.openstreetmap.org/changeset/52947504 that says
"Im fixed my soft" suggests that you might be performing some kind of
mechanical edit. If so, you need to follow
https://wiki.openstreetmap.org/wiki/Mechanical_Edit_Policy , which requires
you to discuss what you are proposing to do with other mappers before
actually doing it.

Best Regards,

Andy Townsend, on behalf of OSM's Data Working Group.
https://www.openstreetmap.org/user/SomeoneElse

My sample island/hydrology (JOSM+digitalglobe-premium+bing) not import, not
bot :
https://mc.bbbike.org/mc/?lon=-164.973165=60.843461=13=2=digitalglobe-premium=mapnik=hike_bike=ol_osm-no-labels=35

after simplifacation (v2) :
https://www.openstreetmap.org/changeset/52809320#map=16/60.8221/-164.9684=H
(before see v1)


IF:
if there is a need to correct some hydrology somewhere - welcome 


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