ui.Chart.image.regions

AI-generated Key Takeaways

• The ui.Chart.image.regions function generates a chart by extracting and plotting the value of each band within specified regions from an image.

• The chart's x-axis represents bands, the y-axis displays the reducer output, and series represent regions.

• Key arguments include the input image, optional regions, reducer, scale, seriesProperty for labeling regions, and xLabels for band labels.

Generates a Chart from an image. Extracts and plots the value of each band in one or more regions.

  - X-axis = Band labeled by xProperty (default: band name).

  - Y-axis = Reducer output.

  - Series = Region labeled by seriesProperty (default: 'system:index').

Returns a chart.

Usage	Returns
ui.Chart.image.regions(image, regions, reducer, scale, seriesProperty, xLabels)	ui.Chart

Argument	Type	Details
image	Image	Image to extract band values from.
regions	Feature|FeatureCollection|Geometry|List<Feature>|List<Geometry>, optional	Regions to reduce. Defaults to the image's footprint.
reducer	Reducer, optional	Reducer that generates the value(s) for the y-axis. Must return a single value per band.
scale	Number, optional	The pixel scale in meters.
seriesProperty	String, optional	Property to be used as the label for each region in the legend. Defaults to 'system:index'.
xLabels	List<Object>, optional	A list of labels used for bands on the x-axis. Must have the same number of elements as the image bands. If omitted, bands will be labeled with their names. If the labels are numeric (e.g. wavelengths), x-axis will be continuous.