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I have got an amount of points which are the locations of fire hydrants. Each of it can deliver a certain amount of water (Liters / Minute) in a radius of 300m for firefighting purposes.

I have created a buffer around each point and now I want to calculate the amount of water for firefighting purposes in the buffers an in the overlap areas and in the non-overlap-areas.

 

 

Example: I have Hydrant #1, which can deliver 2000 l / Min, and I have Hydrant #2, which can deliver 3000 l / Min. In the overlapping area, I have 5000 l/min of water supply, in the non-overlapping-area I have a water supply of 2000 l/Min (Hydrant #1) or 3000 l/min (Hydrant#2) respectively.

 

Of course, there are many more hydrants to look at, and in some cases we have a dozen or more hydrant areas which are overlapping.

 

I have used the "area-on-area-overlayer", which seems to work properly, but I don't know how to calculate the sum of water supply in the overlapping area.

 

Is there anyone who can help?

 

Hi @schorsch Generate a list in the AreaOnAreaOverlayer and add to that list the attribute that holds the l/min values. Then follow the AoAO with a ListSummer to add those values from overlapping buffers together.

In Your AreaOnAreaOverlayer turn on the Generate List option. Select the attributes you want to use in the stats.

 

The output will have the attributes in a list for the overlapped ares. Now use a ListSummer on that attribute and you have your l/m per area

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