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{
"name": "y_max",
"type": "function",
"description": "Returns the maximum y coordinate of a geometry. Calculations are in the spatial reference system of this geometry.",
"arguments": [ {"arg":"geom","description":"a geometry"}],
"examples": [ { "expression":"y_max( geom_from_wkt( 'LINESTRING(2 5, 3 6, 4 8)') )", "returns":"8"}
]
}