[Qgis-user] Combining modern maps with old maps

[Nicolas Cadieux]

Hi,
As an archaeologist, I do that a lot.  You will need to scan the map to create a .tiff. The you use the qgis georeferencing plugin to place the map in the correct spot.  

http://www.qgistutorials.com/en/docs/georeferencing_basics.html
This should help.  Also look at the qgis documentation.  http://docs.qgis.org/2.14/en/docs/user_manual/

If you overlap polygons or two rasters, play with the layer rendering and transparency found in the layer properties. 

Cheers
Nicolas

> Le 10 nov. 2016 à 06:22, Pat Hin [via OSGeo.org] <ml-node+s1560n5295134h15 at n6.nabble.com> a écrit :
> 
> Hello guys 
> 
> i am a private researcher who is analyzing where some former old 
> buildings has been 
> most surely been located. 
> For that of course i have sometimes just a very old map (sometimes a 
> picture or a scan). 
> 
> How would be the best way to "overlap" this with a modern map like OSM. 
> I am sure i have to create two layers and the layer for the modern map 
> is easily to do 
> with the plugins. 
> But how to process the "old" map the best way: would do you recommend to do? 
> 
> many thanks 
> 
> pat 
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