[Qgis-user] most efficient way to digitize polygons

[Nicolas Cadieux]

Hi,

Depending on what you are doing and what kind of results you are looking 
for, could you simply use "Polygonize" and then clean those results.  If 
your map are in RGB only, you could do a raster classification analysis 
before hand.  Line would follow pixels at first but those could be fixed 
using various vector tools.

Just a thought!

Nicolas

On 2022-06-16 11:26 a.m., Firstname Lastname via Qgis-user wrote:
> i am a qgis newby and i am beginning a large project that involves 
> digitizing several geology maps.  i am trying to determine the best 
> way to manage the digitizing and avoid extra work.
> my question to the group is:  If i have several coloured polygons that 
> are adjacent to each other, is there an efficient way to digitize one 
> polygon and then use one edge of that polygon for the adjacent polygon 
> so that i dont have to redigitize the same edge twice and so that i 
> will have precisely overrlapping polys with no gaps?  should i 
> digitize one polygon, export and rename it?  can i digitize one have 
> of the next polygon and somehow merge it with the now re-imported 
> polygon?
> is there a more efficient way to do this?
>
> many thanks
>
> -- 
> Byron Veilleux, MSc. P.Geo
> Conjugate Geologic Services Limited
> Calgary, Alberta Canada
> byron at conjugategeo.com
>
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info:https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-user

-- 
Nicolas Cadieux
https://gitlab.com/njacadieux
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20220616/7ea99972/attachment.htm>