{"title":"featureExpressionInfo","type":"object","$schema":"http://json-schema.org/draft-07/schema","description":"An object that defines an expression for per-feature elevation.","properties":{"expression":{"type":"string","description":"An [Arcade expression](https://developers.arcgis.com/arcade/) evaluating to a number.","minLength":1},"title":{"type":"string","description":"Title of the expression.","minLength":1}},"required":["expression"],"additionalProperties":false,"esriDocumentation":{"examples":[{"title":"Zero expression","description":"Do not use geometry.z values","code":{"featureExpressionInfo":{"expression":"0"}}},{"title":"Expression with field name","description":"Elevation from field value without geometry.z","code":{"featureExpressionInfo":{"expression":"$feature.ELEVATION_FOOT"}}}]}}