[Talk-ca] Duplicate overlapping roads...

[Michael Barabanov]

forgot talk-ca

On Mon, Jul 12, 2010 at 8:24 PM, Michael Barabanov <
michael.barabanov at gmail.com> wrote:

> GPS tracks aren't the only source.  There's also Yahoo.  There's local
> survey (for things like oneyway=yes that isn't present in geobase).
> Also, some people choose not to upload GPS they used for editing.  I think
> a good idea would be to see if the import was the last edit for the data to
> be deleted, or if there were edits done after the geobase import.
>
>
> On Mon, Jul 12, 2010 at 7:25 PM, G. Michael Carter <mikey at carterfamily.ca>wrote:
>
>>  Since I've had 100% accuracy to my known areas on CanVec data (well
>> within 5 metres anyways) I'd tend to trust it, over a change to GeoBase data
>> that has no supporting GPS Tracks.  :-)
>>
>> I am comparing it to the GPS tracks as I go, but like I said there is many
>> areas where there is no GPS tracks to follow.   Also, something I've
>> noticed, CanVec data takes into account bends in the road where, in the
>> areas I'm doing, GeoBase just has a straight line.  (Blind line in
>> Orangeville is one such road)
>>
>> I'm sure I'll probably replace some "more" accurate data somewhere, but
>> the frequency should be pretty low, and with no supporting GPS tracks, or
>> quoted source, how do we tell anyways?
>>
>> Mikey
>>
>>
>>
>> On 12/07/10 06:35 PM, Michael Barabanov wrote:
>>
>> My concern would be with 3. It is possible that someone has edited
>> imported Geobase data after the import.
>>
>> On Fri, Jul 9, 2010 at 8:51 AM, G. Michael Carter <mikey at carterfamily.ca> <mikey at carterfamily.ca> wrote:
>>
>>
>>  Sam always says I should let people know what I'm up to.   Today I'm
>> actually going to listen... ;-)
>>
>> I'm working in three areas currently, outward in circles around: Orangeville
>> (040P), Pickering (030M), and Rock Point PP (030L).   (and trying to pull in
>> Lake Ontario shore line)
>>
>> I'm creating some duplicate roads, temporarily, in the process.   I wanted
>> to detail my process here in case anyone notices them and starts scratching
>> their head.
>>
>> The process I'm following:
>>
>> 1.  Remove all existing OSM objects from CanVec grid.  (mostly stuff I've
>> already uploaded)
>> 2.  Merge with existing OSM data on the layer.
>> 3.  Delete any "attribution:GeoBase highway=*" roads.  Trying to preserve
>> any roads that CanVec doesn't have but it's hard since a lot of the areas
>> I'm doing don't have any GPS tracks.
>> 3a.  Where the duplicates come in... I'm leaving any roads that go off grid,
>> at least to an area I haven't processed yet.  Then when I get to that area I
>> remove/merge them.
>> 4.  Go over the area and merge/delete any roads manually added or that have
>> no source (where no GPS track)
>> 5.  Merge any duplicate objects, that I missed or previously existed.
>>
>> Areas I'm staying away from: Toronto!  I'm not going near that one, too much
>> existing or conflicting data.  I'll let someone living in Toronto to pick up
>> that mess. :-)
>>
>> Mikey
>>
>> _______________________________________________
>> Talk-ca mailing listTalk-ca at openstreetmap.orghttp://lists.openstreetmap.org/listinfo/talk-ca
>>
>>
>>
>> --
>> *G. Michael Carter*
>>  Contact: H: 1-519-940-8935 | W: 1-905-267-8494 | M: 1-519-215-1869 | F:
>> 1-519-941-0009
>> Google Talk: xmpp:mikeycarter1974 at gmail.com
>>
>>
>> <http://www.openstreetmap.org/?lat=43.9216&lon=-80.105&zoom=14&layers=B000FTF><http://livedvd.carterfamily.ca/>
>>
>
>
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