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.

ui.Chart.image.byRegion(image, regions, reducer, scale, xProperty)ui.Chart
imageImageImage to extract band values from.
regionsFeature|FeatureCollection|Geometry|List, optionalRegions to reduce. Defaults to the image's footprint.
reducerReducer, optionalReducer that generates the value(s) for the y-axis. Must return a single value per band. Defaults to ee.Reducer.mean().
scaleNumber, optionalScale to use with the reducer in meters.
xPropertyString, optionalProperty to be used as the label for each Region on the x-axis. Defaults to 'system:index'.