4

I have a problem with the function buffers in QGIS. I prepared a layer with bus stops and buffers for them (500 m). Then I joined layer with buffers and layer with density of population. I want to know the number of inhabitants living within 500 m from the bus stop. That's why I use join attributes by location. Everything came out well, but the problem is the overlapping buffers. "Connected people" are in two or three buffers at once. And I need to know the number of inhabitants outside of these buffers. Is there any possibility of division between buffers or converted, so as not counted them a few at a time?

Orange and brown spots are inhabitants.

enter image description here

Improve this question
3
  • 2
    Union all the buffer areas into one geometry.
    – user30184
    Commented Mar 7, 2016 at 10:10
  • 1
    Is your layer with density of population a point layer?
    – Joseph
    Commented Mar 7, 2016 at 11:24
  • Thanks, of course it was very easy, but I not even thought about that :)
    – KarolinaC
    Commented Mar 7, 2016 at 11:45

1 Answer 1

Reset to default
1

If you tick the dissolve results option when you run the buffer you won't have issues with overlapping zones and double counting.

Improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.