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The feature the geometry of which is being converted.
proj
Projection, optional
The target projection. Defaults to EPSG:4326. If this has a geographic CRS, the edges of the geometry will be interpreted as geodesics. Otherwise they will be interpreted as straight lines in the projection. This default can be overridden by the geodesic parameter.
maxError
ErrorMargin, default: null
The maximum projection error.
geodesic
Boolean, default: null
Whether to interpret edges as geodesics. If true, edges are interpreted as the shortest path on the surface of the earth. If false, edges are interpreted as straight lines in the projection. Defaults to true if the target projection is geographic, and false otherwise.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-07-01 UTC."],[],["Transforms a feature's geometry to a specified projection. The function `ee.Algorithms.ProjectionTransform` takes a `feature`, a target `proj`ection (defaults to EPSG:4326), and an optional `maxError` margin. The `proj`ection determines if geometry edges are geodesic or straight lines. The input `feature`'s geometry is converted, and the transformed `feature` is returned. The `maxError` sets the tolerance for the projection's accuracy.\n"]]