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I can't insert Ground Control Points (GCPs) with more than 3 decimals - PIX4Dmapper

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Problem description
Cause
Solution

Problem description

In some cases, PIX4Dmapper does not allow the entry of Ground Control Points (GCPs) coordinates with more than 3 decimal values in the GCP/MTP Table in the GCP/MTP Manager window.

Cause

This is not a problem but, it is an expected behavior. Most likely, the selected GCP Coordinate system is set to a projected Coordinate Reference System (CRS) in meters or feet, but you are trying to enter coordinates in a Geographic Coordinate System.

  • The projected Coordinate Systems allow for 3-digit decimal points 
  • The geographic Coordinate System allows for more decimal points

Solution

Select the GCP Coordinate System to match your actual measured GCPs. In some cases, in particular when switching between Projected and Geographic CRS, it is needed to close the GCP/MTP manager window and open it again.