Generic Circular Catchment Areas - Interactive Map
This interactive map allows you to set different circular catchment areas around marked locations loaded in
from a Google MyMap
. (Google MyMaps allow
you to create your own map, annotated with markers at locations you have chosen; such as all the schools or supermarkets in
your area, for example.)
If you add markers to your MyMap using different 'classes' of title, (such as the names of different supermarket
chains (e.g. Tesco, or Morrisons), or the sector of a particular school ('This Prmary School', or 'That Secondary School' for example) you can view
different sized catchment areas around each point, or hide particular sets of points (such as all Tesco supermarkets).
You can find a list of all the locations
displayed on the map directly below the map - just tick the box next to each location you want to exclude
from the map.
At the current time, the map will identify different supermarket chains. The words that appear in the
text boxes (Tesco, Morrisons etc) should match words that appear in the title of each marker on your MyMap.
To import markers from a Google MyMap, you must first enter the URL for the map and click 'Load Map'. The URL
you should use for the map is the one linked to from a Google MyMap as the 'View in Google Earth' URL. Once you have
loaded the map, it will refocus to a point in the centre of the locaitons you have loaded.
When the map is loaded, a list of locations should be displayed beneath the map, from which you can choose to
exclude schools from the map (to simulate their closure, for example). Choose appropriate catchment area
settings, and then click on 'Plot Points'.
Each time you change the view/hide settings, you will need to clear the map (click on 'Clear') and then
replot the catchment circles ('plot points') - you should not need to reload the map.