That's brilliant! It worked perfectly, thanks a lot. 2015-04-11 13:41 GMT-05:00 Siki Zoltan <[email protected]>:
> Dear Francesc, > > Create a unique field in the attribute table of your polygon layer, for > example an ordinal number of the features ($rownum in field calculator) > Add the same polygon layer twice to your QGIS project. Rename one of them > not to mix them up. Use the Vector/Geoprcessing/Union (or intersection) > between the two layers (refering to the same shape file). > In the result you will get the columns of the two layers, names are > changed to be unique (e.g. if you created an id column, then you get id and > id_2). You can ignore/delete those polygons where id = id_2. > Add an area column to the result using the field calculator. > > I hope it helps you. > > Best regards, > Zoltan > > On Sat, 11 Apr 2015, Francesc Caas wrote: > > Hi, >> I'm using qGis 2.4 and I want to know the overlap area of many polygons of >> the same shape. How can I do it? There any tool to do it or I have to do >> some steps? There are too many polygons to create separate shapes for >> everyone and make clips. >> >> Thanks a lot. >> >> >> >> -- >> *Francesc Ca˙˙as <http://francescsig.info/>* >> Ambientoleg SIG <http://francescSIG.info> >> <http://aixonoesunblog.blogspot.com> >> > -- *Francesc Cañas <http://francescsig.info/>* Ambientoleg SIG <http://francescSIG.info> <http://aixonoesunblog.blogspot.com>
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