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ee.FeatureCollection.aside
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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.
| Usage | Returns | FeatureCollection.aside(func, var_args) | ComputedObject |
| Argument | Type | Details | this: computedobject | ComputedObject | The ComputedObject instance. |
func | Function | The function to call. |
var_args | VarArgs<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');
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Last updated 2025-07-08 UTC.
[null,null,["Last updated 2025-07-08 UTC."],[[["\u003cp\u003e\u003ccode\u003easide()\u003c/code\u003e 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.\u003c/p\u003e\n"],["\u003cp\u003eIt's useful for debugging by printing intermediate results or displaying them on the map during a sequence of operations on a ComputedObject.\u003c/p\u003e\n"],["\u003cp\u003eThe function passed to \u003ccode\u003easide()\u003c/code\u003e receives the ComputedObject as the first argument and any additional arguments provided to \u003ccode\u003easide()\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThis 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.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003easide()\u003c/code\u003e returns the original ComputedObject, facilitating seamless chaining of further operations.\u003c/p\u003e\n"]]],[],null,["# ee.FeatureCollection.aside\n\n\u003cbr /\u003e\n\nCalls a function passing this object as the first argument, and returning itself. Convenient e.g. when debugging:\n\n\u003cbr /\u003e\n\nvar c = ee.ImageCollection('foo').aside(print)\n\n.filterDate('2001-01-01', '2002-01-01').aside(print, 'In 2001')\n\n.filterBounds(geom).aside(print, 'In region')\n\n.aside(Map.addLayer, {min: 0, max: 142}, 'Filtered')\n\n.select('a', 'b');\n\nReturns the same object, for chaining.\n\n| Usage | Returns |\n|-------------------------------------------|----------------|\n| FeatureCollection.aside`(func, var_args)` | ComputedObject |\n\n| Argument | Type | Details |\n|------------------------|-------------------|----------------------------------------------|\n| this: `computedobject` | ComputedObject | The ComputedObject instance. |\n| `func` | Function | The function to call. |\n| `var_args` | VarArgs\\\u003cObject\\\u003e | Any extra arguments to pass to the function. |\n\nExamples\n--------\n\n### Code Editor (JavaScript)\n\n```javascript\n// Get a FeatureCollection of power plants in Belgium. Use \"aside\" to print the\n// collection and display it on the Map.\nvar fc = ee.FeatureCollection('WRI/GPPD/power_plants')\n .filter('country_lg == \"Belgium\"')\n .aside(print, 'Power plants in Belgium')\n .aside(Map.centerObject, 7)\n .aside(Map.addLayer, {color: 'blue'}, 'Power plants');\n```"]]