Calculate areas

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06-16-2022 06:03 AM
HeddaJensen
New Contributor

Hello,

I have prosessed a project from own drone data and GCPs and are now trying to calculate area on the orthomosaic. I then tried to import the orthomosaic into ArcGIS and calculate the same area, but the answers are completely different. I have made sure the coordinate systems are the same and correct, and in ArcGIS I drew a polygon and used shape_area from the attribute table. Why is there a difference and which calculation is the correct one?

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