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.

Usage Returns
ui.Chart.image.doySeriesByYear(imageCollection, bandName, region , regionReducer , scale , sameDayReducer , startDay , endDay ) ui.Chart
Argument Type Details
imageCollection
ImageCollection The ImageCollection to chart.
bandName
Number|String The name of the band to chart.
region
Feature|FeatureCollection|Geometry, optional The region to reduce. Defaults to the union of all geometries in the image collection.
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.
sameDayReducer
Reducer, optional Reducer for aggregating band values across images with the same (DoY, year) pair. Must return a single value. Defaults to ee.Reducer.mean().
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.
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