Analyze (Tolerance Checking)

This step classifies the parts according to their average offset. 

1. First, set the Tolerance. This value will be used to classified parts in three statuses:

   1. Within tolerance: the median deviation of the whole part is below the value.

   2. Out of tolerance: the median deviation of the whole part is above the value.

   3. No data: there is not enough scanned points to perform the analysis

2. Then adjust the algorithm:

   1. Set the Exclusion zone distance to define the maximum distance to link points and parts.

   2. Edit the Coverage Min. to part that aren't sufficiently covered by the scan.

   3. Optionally, Consider surface orientation. This option is highly recommended to improve the matching between points and objects (but only available when the cloud has scanning directions). It may happen that the cloud contains wrong scanning directions or the model has reverted parts: in such situations, disable this option.

   4. Optionally, Optimize with indoor construction site classes to better match objects and points. Note that the classification have to be performed prior to the workflow.  

3. Click Compute.

4. Optionally, click Reset to adjust the parameters and start again the workflow. 

5. Then click Next to validate and continue (Check).

Indoor classification option

Note that the classification option can optimize the analysis of the following objects:

• Walls and wall skeletons can only belong to "IfcWall" or "IfcCurtainWall"

• Ceilings and floors can only belong to "IfcSlab"

All other classified points (e.g.: doors, beams...) will not belong to a specific IFC type but gathered together in "All others" IFC type. Consequently, it is recommended not to use this option if you only analyze this kind of objects.