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Returns the authority code (e.g., 'EPSG:4326') for the base coordinate system of this projection, or null if the base coordinate system is not found in any available database.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-07-13 UTC."],[[["The `crs()` method returns the authority code of the projection's base coordinate system."],["If the base coordinate system is not found, it returns null."],["It is used within the Projection class and takes no arguments besides the projection instance."],["The returned value is a string, representing the coordinate system's authority code, such as 'EPSG:4326'."]]],[]]