ee.FeatureCollection.aside

  • aside() is a method that allows you to call a function on a ComputedObject (like an ImageCollection or FeatureCollection) within a chain of operations without altering the object itself.

  • It's useful for debugging by printing intermediate results or displaying them on the map during a sequence of operations on a ComputedObject.

  • The function passed to aside() receives the ComputedObject as the first argument and any additional arguments provided to aside().

  • This enables actions like printing the object, centering the map on it, or adding it as a layer with visualization parameters without disrupting the primary workflow.

  • aside() returns the original ComputedObject, facilitating seamless chaining of further operations.

Calls a function passing this object as the first argument, and returning itself. Convenient e.g. when debugging:

var c = ee.ImageCollection('foo').aside(print)

.filterDate('2001-01-01', '2002-01-01').aside(print, 'In 2001')

.filterBounds(geom).aside(print, 'In region')

.aside(Map.addLayer, {min: 0, max: 142}, 'Filtered')

.select('a', 'b');

Returns the same object, for chaining.

UsageReturns
FeatureCollection.aside(func, var_args)ComputedObject
ArgumentTypeDetails
this: computedobjectComputedObjectThe ComputedObject instance.
funcFunctionThe function to call.
var_argsVarArgs<Object>Any extra arguments to pass to the function.

Examples

Code Editor (JavaScript)

// Get a FeatureCollection of power plants in Belgium. Use "aside" to print the
// collection and display it on the Map.
var fc = ee.FeatureCollection('WRI/GPPD/power_plants')
             .filter('country_lg == "Belgium"')
             .aside(print, 'Power plants in Belgium')
             .aside(Map.centerObject, 7)
             .aside(Map.addLayer, {color: 'blue'}, 'Power plants');