I am doing a analysis but I have information which is not available in all disagregation levels. I mean, some data is at a national level, other is at subnational level and other is in district level. I need all the information in district level.

Can I break down data (national and subnational) into district level (in the atributes table)?

If it is posible with QGIS, should I use clip or intersect?

Weighting with a variable or the size of polygon.

If I do it with clip, atributes table is weighted?

I mean transform data (e.g. In Mexico there are 5,600 diabetes deaths at a national level, I require those data at a subnational level weighted by population, or the size of the polygon).

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    There are many overlay operators, I think union is is the one you're after but I can't be sure.. what is your specific problem, what have you tried and where are you stuck? – Michael Stimson Nov 8 '19 at 1:01
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    Keep in mind that you can't 'dis-aggregate' national data to regional level... it would be like taking the total population of a country and assigning a value to all states/provinces in a country... – DPSSpatial Nov 8 '19 at 1:13
  • I tried, using intersect. I have 2 layer (shp). One is at subnational level (24 registry in the atribute table) and the other is at a district level (2 registries; name and ID). – danchoperena Nov 8 '19 at 1:13
  • @DPSSpatial, yes I know it. I want to weight the value. For example I have diabetes deaths at a subnational level in one layer, and I have a layer of districts (with population). I would like to weight (estimation) those deaths (subnational) into district level using population. – danchoperena Nov 8 '19 at 1:17
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