ee.Dictionary.toImage

  • The toImage() method creates an image of constants from values in a dictionary.

  • The order and naming of the image bands can be controlled by the names argument.

  • If no names are specified, the bands are sorted alpha-numerically.

 Creates an image of constants from values in a dictionary. The bands of the image are ordered and named according to the names argument. If no names are specified, the bands are sorted alpha-numerically.

UsageReturns
Dictionary.toImage(names)Image
ArgumentTypeDetails
this: dictionaryDictionaryThe dictionary to convert.
namesList, default: nullThe order of the output bands.

Examples

Code Editor (JavaScript)

// A dictionary (e.g. results of ee.Image.reduceRegion of an S2 image).
var dict = ee.Dictionary({
  B1: 182,
  B2: 219,
  B3: 443
});

var selectedKeysImg = dict.toImage(['B1', 'B2']);
print('Selected keys image band names', selectedKeysImg.bandNames());

var allKeysImg = dict.toImage();
print('All keys image band names', allKeysImg.bandNames());

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)

# A dictionary (e.g. results of ee.Image.reduceRegion of an S2 image).
dic = ee.Dictionary({
    'B1': 182,
    'B2': 219,
    'B3': 443
})

selected_keys_img = dic.toImage(['B1', 'B2'])
display('Selected keys image band names:',
        selected_keys_img.bandNames())

all_keys_img = dic.toImage()
display('All keys image band names:', all_keys_img.bandNames())