[Talk-ca] NRC building footprints - from lidar

Sat Apr 27 18:12:29 UTC 2019

HI 

>From NRCan web site  https://www.nrcan.gc.ca/earth-sciences/geography/topographic-information/free-data-geogratis/whats-new/21747

“Natural Resources Canada is pleased to announce its new data layer on  <https://open.canada.ca/data/en/dataset/7a5cda52-c7df-427f-9ced-26f19a8a64d6> OpenMaps. The richness of this new data layer comes from information on height and elevation of the buildings that will help support Canadian governments priorities such as emergency management, particularly for flood and earthquake risk analysis. This release contains close to 1 million building footprints. We will expand this coverage as more LiDAR data becomes available over Canada.”

See the Lidar coverage (in green) https://www.nrcan.gc.ca/earth-sciences/geography/topographic-information/free-data-geogratis/whats-new/21742

NRCan will continu to add new building

Thank you 

François Paquette 

De : keith hartley [mailto:keith.a.hartley at gmail.com] 
Envoyé : samedi 27 avril 2019 10:54
À : John Whelan
Cc : Alessandro (STATCAN); Talk-CA OpenStreetMap
Objet : Re: [Talk-ca] NRC building footprints - from lidar

I think its where there's good lidar data and imagry for extraction in selected parts of Canada. The extents are here https://open.canada.ca/data/en/fgpv_vpgf/7a5cda52-c7df-427f-9ced-26f19a8a64d6

MB, Nova Scotia, Alberta and BC 

May want to update the building import project as this is a really good source! 

On Sat, Apr 27, 2019 at 9:42 AM John Whelan <jwhelan0112 at gmail.com> wrote:

Is it just Manitoba or all of Canada?

In which case do we want to revise the building import project.

Thanks John

keith hartley wrote on 4/27/2019 9:56 AM:

Hi all, 

Canadian Geomatics posted this data set a few months back from Natural Resource Canada. 

It's Building footprints from Lidar or high res imagery. 
https://canadiangis.com/automatically-extracted-buildings-canadian-open-data.php?fbclid=IwAR22SaWwz7--LarDksVfcQuZ9RDgkVc421n9saJ_Lv8r6xq1qPSrouEF0Ww

https://open.canada.ca/data/en/dataset/7a5cda52-c7df-427f-9ced-26f19a8a64d6

>From what I can tell when placing the data over imagery it's very bang on. Highly accurate, good shapes (unlike the bing files) and well placed. As far as I can tell no one else has uploaded these to OSM. The areas in manitoba are mainly where there's little to no other building info. 

I can write an upload plan on Manitoba wiki as the data is complaint license wise. Anything else I should be looking for? The local mappers here are pretty excited about it.

Keith 

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