ui.Chart.image.doySeriesByYear

Generates a Chart from an ImageCollection. Plots the derived value of the given band in a region for each day-of-year across different years.

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

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

  - Series: Years.

Returns a chart.

UsageReturns
ui.Chart.image.doySeriesByYear(imageCollection, bandName, region, regionReducer, scale, sameDayReducer, startDay, endDay)ui.Chart
ArgumentTypeDetails
imageCollectionImageCollection

The ImageCollection to chart.

bandNameNumber|String

The name of the band to chart.

regionFeature|FeatureCollection|Geometry, optional

The region to reduce. Defaults to the union of all geometries in the image collection.

regionReducerReducer, optional

Reducer for aggregating band values within the region. Must return a single value. Defaults to ee.Reducer.mean().

scaleNumber, optional

Scale to use with the region reducer in meters.

sameDayReducerReducer, optional

Reducer for aggregating band values across images with the same (DoY, year) pair. Must return a single value. Defaults to ee.Reducer.mean().

startDayNumber, optional

Day of year to start the series. Must be between 1 and 366.

endDayNumber, optional

Day of year to end the series. Must be between startDay and 366.