Giraffe is always calculating everything about your drawn geometries. Giraffe elements that you have drawn have geometric properties (like area) and also the parameters you have applied to them.
A special parameter called usage references you to apply a collection of parameters that you define in the Usage Editor.
Giraffe takes the parameters from the Usage and property palette and converts the raw geometry into an urban element. eg. a building.
Giraffe will create reports (Urban or Custom) from the geometric properties in combination with the applied parameters.
Analytics references the geometric attributes of geometries and any numeric property values, assigned either via Usage or directly.
Giraffe lets you use geometric properties, and also parameters, to define an analytic measure.
Giraffe displays each measure as a row in a custom report.
Set up for success
The best practice is to get your project data in good shape. This will enable accurate reports and calculations.
Confirm the Usages in your project include and reflect the correct property values.
Check if
efficienciesmake senseConfirm
costs(like build cost or net rent) reflect your product assumptionsEnsure unit sizes and mix is reflective of your project goals
etc
Confirm your geometries are inheriting the correct Usages and property values.
Place geometries on descriptive drawing layers to allow for groupings in your reports.
Delete anything that is unnecessary
Remove unused/unnecessary Usages
Delete empty and unused drawing layers
Delete unused property definitions
Analytics can only reference geometries you've drawn in Giraffe. Spatial Data layers are excluded.