ee.Date.aside

Page Summary

• The aside method calls a function with the current object as the first argument and returns the object itself for chaining.

• It is useful for debugging or adding intermediate steps like printing values or adding layers to a map during chained operations.

• The aside method takes a function and optional additional arguments to pass to that function.

• The method returns the same ComputedObject it was called on.

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
Date.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)

// Print a message when constructing the ee.Date.
var eeDict = ee.Date(Date.now()).aside(print, "Today's date (UTC)");

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

Colab (Python)

from datetime import datetime

def print_date(ee_date, message):
  """Prints a formatted date, along with a descriptive message."""
  display(message, ee_date.format("YYYY-mm-dd"))

# Print a message when constructing the ee.Date.
ee_date = ee.Date(datetime.now()).aside(print_date, "Today's date (UTC):")