Point Cloud Thinning Controls
Point Cloud measurement adds an additional level of complexity to GD&T evaluations. A desire to use all available data often needs to be weighted against obtaining a quick and accurate solution. SA pro- vides a selection of cloud thinning and subsampling options to help with this task. The global Feature Check Cloud Thinning control is available on the Analysis Tab in the User Options.
In many cases a single check may need to be sub-sampled to a different extent than other checks in the job. An example of this would be a planar region with multiple holes. The plane could be over sampled extensively in capturing data to define the hole positions. Equalizing the data coverage in all the features would in this case speed the processing time.
The individual check thinning controls are in the right-click Feature Check Properties . The total number of points included in the check and the number used are both reported as part of the evaluation results in the tree for clarity:
The Details Table of the report will only report the points used for the evaluation.