Gregory Arenius wrote:
Hi,
"Imported data turns down potential new mappers."
I really disagree with this statement. I think the mappers would be
turned off if we didn't import it when available. "So you have all
250,000 address points for the city but instead of using them you'd
rather us go collect all of them a second time?!?" Nobody is going to
do that. Same with building outlines. It might be true for some data
but I think its a largely inaccurate statement.
There have also been some really well done imports such as the MassGIS
one in MA. Not using that data isn't going to get us any further than
using it. It makes our data much more useful, so it gets used, which
brings in more contributors which....
Maybe it would be different if there were no open data to import at
all, then people would be more motivated to gather it so it would
exist. However, if it does exist, weather or not we use it, that
motivation is no longer there.
I also think that in the US if government agencies are updating their
data that we can use that we should look at that as part of the
community. They're producing free data and so are we....I just wish
they could use our data they way we use theirs.
-Greg
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Dear Gregory
I totally agree with Frederik. Yes - imported data turns down new
mappers. Have you ever seen those monster
multipolygons ? I am sure a new mapper says: Forget that
I personally tend to stop my contribution to OSM because of the very bad
stuff I see when mapping:
Triple contours at the same position, double / triple nodes,
unconnected, tiny streams / rivers with a bunch tags.
In Albuquerque I - sorry - deleted 43 churches imported from geonames
all at the same spot.
I have dozens of examples like that. Tell us, how to fix this stuff. By
hand ? Waiting for better data ?
Writing better software ? Who merges old with new data ?
There is a philosophy of Importing and forgetting. For me most kind of
imports are some kind of vandalism.
Here are some examples:
Double contours
http://www.openstreetmap.org/?lat=46.1499579&lon=-89.0375386&zoom=16
http://www.openstreetmap.org/?lat=46.127073&lon=-89.0544339&zoom=16
http://www.openstreetmap.org/?lat=46.12705&lon=-89.05509&zoom=16
http://www.openstreetmap.org/?lat=46.18554&lon=-86.03864&zoom=16
Multiple streams / rivers
http://www.openstreetmap.org/?lat=46.117362&lon=-88.9222917&zoom=16
http://www.openstreetmap.org/?lat=46.1631804&lon=-89.0104308&zoom=16
Nodes tagged waterway=river
http://www.openstreetmap.org/?lat=46.2965&lon=-86.1032&zoom=14
Unconnected streams / rivers
http://www.openstreetmap.org/?lat=46.723&lon=-88.568&zoom=14
Ten thousands of omported single trees in Europe
http://www.openstreetmap.org/?lat=41.98688&lon=2.81672&zoom=17&layers=M
WernerP
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