AI-generated Key Takeaways
-
The
size()method returns the number of elements in a collection. -
Using
size()on large or complex collections can consume significant time and memory, potentially causing errors. -
The method is used with
ImageCollection.size()and returns an Integer. -
Examples are provided in both JavaScript and Python.
| Usage | Returns |
|---|---|
ImageCollection.
size
()
|
Integer |
| Argument | Type | Details |
|---|---|---|
|
this:
collection
|
FeatureCollection | The collection to count. |
Examples
Code Editor (JavaScript)
// Note: ee.ImageCollection.size may take a lot of time and memory to run, // since it must generate all of the results in order to count them. Large // collections and/or complex computations can produce memory limitation // errors. // A Landsat 8 TOA image collection (1 year of images at a specific point). var col = ee . ImageCollection ( 'LANDSAT/LC08/C02/T1_TOA' ) . filterBounds ( ee . Geometry . Point ( - 90.70 , 34.71 )) . filterDate ( '2020-01-01' , '2021-01-01' ); // Get the number of images in the collection. print ( 'Number of images' , col . size ());
import ee import geemap.core as geemap
Colab (Python)
# Note: ee.ImageCollection.size may take a lot of time and memory to run, # since it must generate all of the results in order to count them. Large # collections and/or complex computations can produce memory limitation # errors. # A Landsat 8 TOA image collection (1 year of images at a specific point). col = ee . ImageCollection ( 'LANDSAT/LC08/C02/T1_TOA' ) . filterBounds ( ee . Geometry . Point ( - 90.70 , 34.71 ) ) . filterDate ( '2020-01-01' , '2021-01-01' ) # Get the number of images in the collection. display ( 'Number of images' , col . size ())
