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ui.Chart.image.doySeriesByRegion

Generates a Chart from an ImageCollection. Plots the derived value of the given band in different regions at each day-of-year.

- X-axis: Day of year (startDay to endDay, defaults to 1 to 366).

- Y-axis: Derived band value (reduced within the region and across years).

- Series: Regions.

Returns a chart.

Usage	Returns
`ui.Chart.image.doySeriesByRegion(imageCollection, bandName, regions, regionReducer, scale, yearReducer, seriesProperty, startDay, endDay)`	ui.Chart

Argument	Type	Details
`imageCollection`	ImageCollection	The ImageCollection to chart.
`bandName`	Number\|String	The name of the band to chart.
`regions`	Feature\|FeatureCollection\|Geometry\|List	The regions to reduce.
`regionReducer`	Reducer, optional	Reducer for aggregating band values within the region. Must return a single value. Defaults to ee.Reducer.mean().
`scale`	Number, optional	Scale to use with the region reducer in meters.
`yearReducer`	Reducer, optional	Reducer for aggregating band values across years (for a given day of year). Must return a single value. Defaults to ee.Reducer.mean().
`seriesProperty`	String, optional	Property of features in opt_regions to be used for series labels. Defaults to 'system:index'.
`startDay`	Number, optional	Day of year to start the series. Must be between 1 and 366.
`endDay`	Number, optional	Day of year to end the series. Must be between startDay and 366.