Quick Time Map (Isochrones)
This tool creates isochrones, also known as travel time polygons or catchment areas. It visualises all the locations that are reachable within a time limit based on selected parameters including transport mode & departure/arrival time.
Using the tool
Select the tool by clicking on it, then open the dialogue box under the dropdown arrow. Fill in the parameters, then either:
- Enter an address, and click ‘Run’
- Enter a lat-long point, and click ‘Run’
- Click on the map canvas
A new layer will be added to the project with the time. This layer is a ‘temporary layer’. If you need to save it, right click on it in the legend, and choose ‘Make permanent’.
|Transport Mode||Method of transport||Picklist|
|Journey Time||The maximum journey time - allows up to 3 journey times||Text|
|Time Zone||Time zone||Picklist|
|Departure / Arrival Searches||Whether the calculated area will be for journeys departing or arriving at the chosen location||Picklist|
|Departure / Arrival Time||The departure or arrival time. This will get updated as per the time zone selected.||Calendar Format - dd/mm/yyyy hh:mm|
|Departure / Arrival Location (Address)||Text address of the departure / arrival location||Text|
|Departure / Arrival Location (Lat-Long)||Coordinates of the departure / arrival location||Text|
Things to note
The ‘Journey Time’ field cannot be left blank. In order to only return one or two isochrones, simply enter 0 as the value in the spare time fields.
The magnifying glass button can be used to verify the address or lat-long has been geocoded correctly, before running the tool.