[Qgis-user] Building Historical Maps

[Saulteau Don]

I did a timeline kind of showing that but for all of Canada. It was part of
a workshop doing a talk on territorial evolution and treaties.

It uses the data from the series of maps at
http://www.historicalatlas.ca/website/hacolp/national_perspectives/boundaries/UNIT_17/U17_Timeline/U17_timeline_1713.htm


I requested it and they were kind enough to share so you may find some help
from the researchers who put that historical atlas together.





Donovan
indiGenIS Geopgrahic Information Systems

On Fri., Jul. 23, 2021, 05:43 Nicolas Cadieux, <njacadieux.gitlab at gmail.com>
wrote:

> Hi,
> Looks like you are moving forward nicely.  I wonder if you did enough
> searching around the net before starting.  A quick search did show multiple
> sites with data but, of course, you may be involved with those projects.  I
> would look at the data sources from those sites and follow those leads.
>
>
> https://www.arcgis.com/apps/webappviewer/index.html?id=8cc6be34f6b54992b27da17467492d2f
>
> https://mdl.library.utoronto.ca/collections/mdl-projects/ontario-county-map
>
> https://www.library.yorku.ca/web/map/guides/online-resources/
>
> I would also take a look at the old canvec and canmatrix map from nrcan.
> They probably contain historical boundary.  I would also call (yes call)
> nrcan directly in Sherbrooke as they are very good at assisting
> researchers. They may have a stockpile of old vector files in some obscure
> server.
>
> http://www.geogratis.gc.ca/
>
> You should also take a look at open Canada site.
>
>
> https://search.open.canada.ca/en/od/?sort=last_modified_tdt%20desc&page=1&od-search-col=Open%20Maps&search_text=&_ga=2.120669646.718045198.1627043574-1748685200.1627043574
>
> But you should mostly concentrate on the Ontario geohub.
>
> https://geohub.lio.gov.on.ca/
>
> I would email them as they are they seem to be the true authoritative
> agency in the province.  I would look at what Ontario Hydro has also.
>
> I don’t do much work in my home province but I do remember those Mike
> Harris years!
> Cheers!
>
> Nicolas Cadieux
> https://gitlab.com/njacadieux
>
> Le 22 juill. 2021 à 21:16, James Cobban <webmaster at jamescobban.net> a
> écrit :
>
> I am running a project to present historical information about Ontario,
> Canada.  To support this I have imported GIS information on administrative
> boundaries from the Ontario Government.  The only problem is this
> information only describes the current administrative organization of the
> province, not the organization it had for most of its history up until the
> early 1990s when the system was "rationalized".  I am looking for
> suggestions of how to extract as much information from the current GIS data
> as possible.
>
> For example:  From 1850 to the early 1990s most of Ontario was
> administered as counties with lower level townships.  In the 1990s the more
> urbanized portions of the province were reorganized as "Regional
> Municipalities" which largely ignored the old county boundaries either by
> including only the urban portion of a former county, or by incorporating
> urban portions of multiple counties. So, for example, if I wish to
> reconstruct the boundaries of the former county of Welland I have to
> concatenate the boundaries of the individual townships that made up the
> former county, and then remove all of the internal, and redundant,
> boundaries.  I have manually done that for one county but it was a pain in
> part because the polygons of the individual townships did not begin at a
> "corner" shared with an adjacent township within the county. Just finding
> exactly where the polygon began and which direction it went took time.
>
> The second issue is that boundaries changed multiple times over the period
> between 1763 when Britain assumed control of the area of Ontario, and the
> present.  In particular city boundaries change as areas are transferred
> from the surrounding rural municipalities to the city as a result of urban
> growth.  Where do I get the old boundary information aside from tracing
> them from old maps?
>
> --
> James Cobban
> 911-500 Springbank Dr
> London, ON, Canada
> N6J 4G6
> mailto: webmaster at jamescobban.net
> +1-226-504-7603
>
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