I'm calculating the area of some polygons and realized that the values are coming out differently when I do the calculations in ArcGIS and QGIS. The data is in Sirgas 2000 and projected for the South America Albers Equal Area Conic.
Also, I can't control the number of decimal places for this field in ArcGIS, even by changing the Precision and Scale values.
Can anyone tell me what I might be doing wrong or is it normal?
I'm using field calculator in both cases. In ArcGIS I've selected the spatial reference of the file plus the square kilometers option. In QGIS I've used "$area / 100000". The datum is "Sirgas 2000" and I've done the projection previously in ArcGIS (Project - Data Management)
The areas in the picture are in square kilometers (km²).