AI-generated Key Takeaways
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The
ui.Chart.image.doySeriesByRegionfunction generates a chart from an ImageCollection. -
The chart plots the derived value of a specified band for different regions across the day of year.
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The chart's x-axis represents the day of year, the y-axis represents the derived band value, and the series represent the regions.
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The function returns a
ui.Chartand takes arguments including the ImageCollection, band name, regions, and optional reducers and scale.
- 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<Feature>|List<Geometry> | 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. |