[Qgis-user] How to covnert .jpg/.png to .shp

[Micha Silver]

emigrant wrote:

> hi all,
> how can i convert .jpg/.png into .shp in linux/ubuntu?
>
>   
Jpeg or png are rasters, shapefile is a vector format. They are not 
compatible.
IF the images (jpg or png) represent line features or uniform areas then 
there are ways to extract the vector features from the images using 
tools in the GRASS plugin.
> thank you very much.
>
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-- 
Micha Silver
Arava Development Co. +972-52-3665918
http://www.surfaces.co.il