[talk-au] FYI Public Records VIC - Map Warper

[nwastra]

Hi
For info there is a map warper (or georeferencer) plugin for QGIS.
Here is a tutorial
https://www.qgistutorials.com/en/docs/3/georeferencing_basics.html


> On 7 Sep 2021, at 5:02 pm, Adam Horan <ahoran at gmail.com> wrote:
> 
> "what is it actually doing?"
> 
> You use it to correct/align old maps to modern maps. This enables browsing and overlays of old maps onto modern eg https://mapwarper.prov.vic.gov.au/maps/10890#Preview_Rectified_Map_tab 
> There's a WMS layer produced that can be shown in JOSM and others, see https://mapwarper.prov.vic.gov.au/maps/10890#Export_tab . I've no idea on the legals/copyright involved in utilising the information on these maps in OSM (even if data was still relevant all these years later)
> 
> 
> 
>> On Tue, 7 Sept 2021 at 15:36, Graeme Fitzpatrick <graemefitz1 at gmail.com> wrote:
>> Interesting, but what is it actually doing?
>> 
>> Is that "correcting" the original maps to align with OSM?
>> 
>> I'm afraid to say that they have a lot to learn about explanatory videos, or was it only me that was silent, & kept dropping in & out of focus!
>> 
>> Thanks
>> 
>> Graeme
>> 
>> 
>>> On Tue, 7 Sept 2021 at 14:59, Adam Horan <ahoran at gmail.com> wrote:
>>> As a group of people interested in Australia, Maps, crowdsourcing and open data, I'm going to assume you'll also be interested in Map Warper. It's an online tool allowing alignment and rectification of old (any really) maps to reality. https://wiki.openstreetmap.org/wiki/MapWarper
>>> 
>>> I've been playing with the version hosted for Public Records Office Vic at https://mapwarper.prov.vic.gov.au/ 
>>> There's 12091 old maps and plans on the site, some have been rectified, and some await rectification.
>>> 
>>> I've been finding looking at these old maps absolutely fascinating. You can see which roads have moved or not, towns that were planned to be much larger and have shrunk, roads that have returned to tracks, or disappeared, original (Aboriginal sounding) place names that have been retained or lost. You can also appreciate the skill and accuracy of the surveyors of 100+ years ago, there are coastlines and rivers mapped in more detail here than in OSM.
>>> 
>>> Usability is a bit average, but the content is interesting.
>>> 
>>> Regards,
>>> 
>>> Adam
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