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Question 

Control points can improve the accuracy of your maps and allow you to automatically align multiple datasets.

But how many control points should you take in one mapping?

 

Answer

The minimum number of control points required are two per dataset. 

However, for the highest accuracy we recommend placing:

  • At least three control points per dataset.

  • Control points at the beginning and end of each dataset.

  • One control point every 25 m.

  • One control point at every corner in a long corridor.