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ui.Chart.image.byRegion

Generates a Chart from an image. Extracts and plots band values in one or more regions in the image, with each band in a separate series.

- X-axis = Region labeled by xProperty (default: 'system:index')

- Y-axis = Reducer output.

- Series = Band name.

Returns a chart.

Usage	Returns
`ui.Chart.image.byRegion(image, regions , reducer , scale , xProperty )`	ui.Chart

Argument	Type	Details
`image`	Image	Image to extract band values from.
`regions`	Feature\|FeatureCollection\|Geometry\|List<Feature>\|List<Geometry>, optional	Regions to reduce. Defaults to the image's footprint.
`reducer`	Reducer, optional	Reducer that generates the value(s) for the y-axis. Must return a single value per band. Defaults to ee.Reducer.mean().
`scale`	Number, optional	Scale to use with the reducer in meters.
`xProperty`	String, optional	Property to be used as the label for each Region on the x-axis. Defaults to 'system:index'.

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Last updated 2025-07-08 UTC.

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