Hi Carlos! No se me ocurrio trabajarlo en raster. Es un ejercicio que se planteo desde una catedra de la facultad. Antiguamente trabajamos con Idrisi pero a partir de ahora queremos q los alumnos usen open source. Desde raster es mas sencillo? El area de estudio a conservar fue creada de forma arbitraria solo para aprender la tecnica. Gracias Saludos desde la Patagonia. Mariana. El 17/08/2015 10:12, "Carlos Cerdán" <[email protected]> escribió:
> Hi Mariana: > > If I understand you well, you need to create a new field, making an > expresssion in field calculator, something as: > > case > when conservative>=1 and conservative<4 then 1 > when conservative>=4 and conservartive<32 then 0 > end > > After that, you can try intersection... or union. > > What about to work as raster? > > Saludos desde Perú > > Carlos Cerdán > > 2015-08-16 23:42 GMT-05:00 Mariana Buzzi <[email protected]>: > >> HELLO Guys!! >> >> I want to make a demarcation of a nature reserve area, considering the >> wealth of species and the conservation value of each. For this purpose in >> the area of study I designed a grilling in which I included the species >> richness and other gridding the area in which I included the conservative >> value species. >> >> What I do now is a relclasificación of these data as follows: >> For cells with conservative values [1-4) set the value of 1. >> For cells with conservative [4-32 values) set to 0. >> >> Once this is done, I want to make an intersection of information, to >> establish the relationship between the areas defined as priority and >> species richness. >> >> My problem starts to perform the mecionada reclassification, ie designate >> values of 0 and 1 at intervals raised. The other problem is how do I make >> the crossing of information? What function the qgis? >> >> Thank You !!!! >> I await your news !!!! >> >> PS: I speak Spanish. >> >> _______________________________________________ >> Qgis-user mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/qgis-user >> > > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user >
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