When you added the Reprojector transformer, why was it important to place it before the AreaCalculator?

When you added the Reprojector transformer, why was it important to place it before the AreaCalculator?

• A. The workspace would run slower if the Reprojector was placed later in the workflow.
• B. The data would not be projected if placed after the AreaCalculator.
• C. You should always add new transformers near the start of a workspace.
• D. You should only calculate areas using data with a projected coordinate system.

Answer: (D)

Accurate area calculations require using a projected coordinate system. When features are in a geographic CRS (lat/long), areas computed from those coordinates aren’t true planar areas because degrees don’t translate to uniform linear distances on the ground. Reprojecting the data to a suitable projected CRS gives coordinates in consistent linear units (meters, feet) and preserves area better for the region of interest. By placing the Reprojector before the AreaCalculator, the calculator works with projected coordinates and returns meaningful, true-area values. If you calculated area first and then reprojected, you’d be measuring areas in geographic units, which would be inaccurate.

Accurate area calculations require using a projected coordinate system. When features are in a geographic CRS (lat/long), areas computed from those coordinates aren’t true planar areas because degrees don’t translate to uniform linear distances on the ground. Reprojecting the data to a suitable projected CRS gives coordinates in consistent linear units (meters, feet) and preserves area better for the region of interest. By placing the Reprojector before the AreaCalculator, the calculator works with projected coordinates and returns meaningful, true-area values. If you calculated area first and then reprojected, you’d be measuring areas in geographic units, which would be inaccurate.