You can add zones to your network at any time.
This way, you can establish zone demands and/or to represent these zones on the map as polygons.
To do it, simply upload polygon files (either Shapefiles or GeoJSON) to use as zones in your model.
This is what the zone layers would look like:
If you zoom in and hover over each zone, you will see a tooltip with its name.
If your network includes readings, you'll also see some extra insights in the zone tooltip about water balance. For more information, see this article.
You can hide or show zones layer by selecting them in the Network elements panel:
Without Zone IDs in your layer, Qatium will use the ID field “zone #” (where # is a number) for your imported zones. E.g. zone 1, zone 2, zone 3
If you have already provided a zone name/ID, Qatium will check for duplicates and complete any duplicate IDs with “~#”.
For example, 3 zones with the ID “MyZone”, “MyZone”, “MyZone”, will become “MyZone”, “MyZone~2” and “MyZone~3”.
Inlet and outlet IDs
Inside your zones, you can specify which of the assets with flowmeters are inlets or outlets.
This is only necessary to adjust live demands.
To do so, edit the zones GeoJson files and, for each sector inform the following two fields:
Within the GeoJson file, they can be separated by commas or semicolons. If some Inlet/Outlet ID is not present in the network, Qatium will ignore this asset.
Importing demand patterns
Did you know that you can assign different demand patterns per network zone?
Well, you can!
You just have to upload a valid GeoJSON or Shapefile that contains:
- A demand pattern in its properties (DemandPattern, alias DemandPatt). And, optionally, a base demand (BaseDemand, alias BaseDem/DemBase).
- A “MultiPolygon” or “Polygon” geometry
The length of the DemandPattern is not limited. Each value corresponds to an hour and you can add as many comma-separated values as required.
Adjusting live demands
There are 2 ways to modify demands with live data:
- Directly sending live demands through the Ingest API;
- Adjusting them according to the flowmeter readings. This is only possible when each zone includes the following data:
- Flowmeter readings
- Zone name/ID
- Inlet/Outlet IDs
The adjustment is made every 15 minutes, distributing the real consumption (Inlet readings minus outlet readings) of the zone (DMA) into the customers/junctions of this DMA. The distribution is made taking into account the demand of the base model in each step. This means that junctions that originally had no demand assigned, will remain so after the adjustment.