Option comparison is designed to help with deciding which corridors or centrelines are best based on its metrics. There are two ways of visualising the metrics:
The spider chart is an effective way of understanding ways in which routes differ.
The table allows you to view specific parameters for each selected option.
Setting up your Spider Chart and Table
Go to the Analyze window and hover over the top icon on the left-hand toolbar and a box will appear saying 'Option Comparison'. Click on the icon to ensure you are in Option Comparison mode.
In the Option Comparison tile on the right, there is a search bar. This is where you will select the parameters you wish to compare. If you click on the search bar the parameters appear in a list as you click on them, they will be added to the spider chart and table.
The parameters available will be dependent on the configuration used. There are a lot of parameter names and knowing them comes with time. Here are a few tips so that you can find what you need,
The route length can be found at the top of the list or can be searched for under 'Total Length'.
To search for anything relating to a data layer search for the data layer name. This will show the minimum distance along that route to anything in the data layer, the length of the route that goes through the data layer, how many features of that data layer are within the specified buffered of that layer or in the case it is a linear feature, how many times the route crosses the data layer.
To find anything relating to features around a centreline search for 'catchment' and select the parameters that relate to the catchment distance and data layer you are interested in.