I have 2 polygons that i wish to combine into one layer, in QGIS.
on the first layer (neighborhoods) i have bigger areas (that divide a city to 7 major areas, or smaller neighborhoods). that i wish to intersect with a second layer (statistical areas) that is built of smaller polygons- this layer holds population numbers and other data. when I perform intersect, from the second layer i get duplication of the areas, so that each smaller area can show in one or two of the larger areas. i want to perform this combination, while either:
1) setting a rule that each of the smaller area will be associated only with one of the bigger areas, the one that the majority of the polygon is in
2) create the same intersection with the duplication but that an attribute of my choice (population number) will be divided relatively to the size of the area that is relevant to the bigger area (under the assumption that the population is equally distributed)