[Talk-ca] NTS sheet to lat/lon converter

[Sam Vekemans]

Thanks :)
I just used your tile BBOX so then the link is in the chart.
...
We always use http://geogratis.gc.ca/geogratis/en/product/search.do?id=28954
But since it's hard to get the BBOX your method is awesome :)

What do you think of the googleDoc chart?

I tried it for that tile you listed in there.

What area are you in?

Cheers,
Sam

Twitter: @Acrosscanada
Facebook: http://www.facebook.com/sam.vekemans


On Thu, Aug 20, 2009 at 7:40 PM, Frank Steggink <steggink at steggink.org>wrote:

> Frank Steggink wrote:
> > Hi,
> >
> > Because it is not obvious to everyone what the extent of the NTS sheets
> > is, I've created a little service which converts them to lat/lon
> > coordinates. It is also possible to show them directly as a box in
> > OpenStreetMap. I'm not sure if a similar service exists (probably NRCan
> > has one), but this might also be useful for the Geobase import.
> >
> > The main entry page is at http://www.steggink.org/geo/
> > At the bottom you can enter the NTS sheet number. It can be done in the
> > formats 'NNN', 'NNNL' or 'NNNLNN' where N is a number and L is a letter.
> >
> > When you press the Submit button, you'll go to a page which shows the
> > center coordinates. (No extent yet.) For example, entering '021L14' (the
> > sheet containing Quebec City) leads you to
> > http://www.steggink.org/geo/nts_area/021L14. From there you can go to
> > various services accepting coordinates, like OSM.
> >
> > When you press the OSM button in the main page, you'll directly see the
> > result as a box in OSM. The "calculated" URL
> > http://www.steggink.org/geo/nts_area/021L14/osmbox gets you redirected
> > (HTTP 301) to the OSM site:
> >
> http://www.openstreetmap.org/?minlon=-71.5&minlat=46.75&maxlon=-71&maxlat=47&box=yes
> >
> > This means that you can also use the URL at my site as a template,
> > replace the bbox, and you'll directly go to the OSM page. The next idea
> > I had would be to using these URLs at the Geobase import status page, so
> > everybody sees directly what area exactly was imported.
> >
> > If you notice any errors (especially in the polar regions, due to the
> > inconsitent box sizes), please report them to me. And yeah, this is not
> > entirely RESTful, because errors are also returned as HTTP 200 - OK :)
> >
> > Regards,
> >
> > Frank
> >
> > _______________________________________________
> > Talk-ca mailing list
> > Talk-ca at openstreetmap.org
> > http://lists.openstreetmap.org/listinfo/talk-ca
> >
> >
> Sorry for not escaping the URLs properly. The second one should be this:
> <http://www.steggink.org/geo/nts_area/021L14>. (should work with those
> brackets).
>
> Frank
>
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