[Talk-ca] OSM CanVec.

[Sam Vekemans]

Hi

On Fri, Jun 4, 2010 at 3:39 AM, john whelan <jwhelan0112 at gmail.com> wrote:
> I thought the whole idea of importing was to just automate loading data.
> Then it can be cleaned up on the map.
>
> If you are suggesting manual intervention by the importer by checking
> against satellite and other images aren't you defeating the purpose?
>
> Cheerio John

Nope, the whole idea is that small tiny (NTS tile or smaller) .osm
files are being made available so then local area mappers can copy in
the data manually.  (And using aerial imagery & toporama & other
sources as backgrounds. which help improve the map)

And Yes, after you open up the file in JOSM, you can easily download
the OSM area of it & if you dont see anything in that area, you can
upload it all.   This will be true for alot of the country. (where
there is no existing data).

However, alot of time & effort was spent on place the OSM data in the
database, and we want to ensure its quality.  So there is no
automation, the automation was in the creation of these combined small
.osm files.

In many cases, the canvec data is old (and we know this)  so it wont
make sence to copy in buildings (for example) if you live in the area,
you can check and see that this is true.

Unlike the TIGER method in the US (where it was all dropped in
remotely)   the canvec .osm files will remain on the NRCan servers
until a local area mapper wants to copy in the data in.   Making
changes after the fact are much harder.

I (personally) plan on doing alot of manual copying in, but only for
those tiles which are close to the 'Trans Canada Trail' and paved
proposed bike & dirt hiking routes.   So for areas outside of this,
local are mappers (with much more knowledge of the area) will be able
to enhance the map with this canvec data & local knowledge.

Cheers,
Sam

P.S. there are a lot of mappers all over the country who wont know
what is going on, perhaps we should make a FAQ wiki page explaining
the process better?   (i could, but im afraid that others wont
understand it :-)

>
>>
>> Looks good, much better than my previous half-assed import attempts.
>>
>> There is a lot of out of date data in CanVec, especially in the
>> buildings layer - e.g. old industrial buildings that were demolished
>> ten years ago and replaced with new buildings. Please compare to
>> Yahoo/survey before importing!
>>
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