I have a selection of polygons that I need to create drive and walk times from.
All of the tools I have found only work using points rather than polygons.
This tool talks about 'facilities' which made me think it works with polygons ... but it doesn't: https://pro.arcgis.com/en/pro-app/latest/tool-reference/ready-to-use/itemdesc-generate-service-areas...
Surely in the world of GIS this functionality has been created as a simple tool set?
Does anyone know of the tool that I need?
This tool talks about 'facilities' which made me think it works with polygons
Facility is only a term used to reference a point location which can be reached via a network.
So, you should consider converting your polygons of interest to points of interest. There are a number of methods to convert a polygon to point, e.g:
The point location would be represent the location where your facility can provide the service (e.g. the entrance to a store, a train station, emergency service exit, etc...)
If a method above is not accurate enough, then you should consider adjusting the point of interest before generating the service area.
I did consider converting the areas to points, however one of my areas of interest is 616 km² which definitely wouldn't work as a centroid or a one off point and it would be a massive work load to figure out how many points are required and where to distribute them along the edge.