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

[Frank Steggink]

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
>
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>   
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