125 example code

Using Earth engine examples

• ee datasets seem to come from https://code.earthengine.google.com/scripts/load
• When logged into gee, this link returns a f.json. It contains all code examples from the docs, including the datasets.
• community datasets can be accessed using git from https://earthengine.googlesource.com
• which in many cases can be translated into python code
• this should make it feasible to use the code examples directly into geemap

Uncomment the following line to install geemap if needed.

In [ ]:

# !pip install -U geemap

# !pip install -U geemap

In [ ]:

import ee
import geemap
import json

import ee import geemap import json

Manually download f.json¶

https://code.earthengine.google.com/scripts/load

Explore json contents¶

Change file download location. Also added f.json to repo.

In [ ]:

url = 'https://github.com/gee-community/geemap/blob/master/geemap/data/gee_f.json'
geemap.download_file(url)

url = 'https://github.com/gee-community/geemap/blob/master/geemap/data/gee_f.json' geemap.download_file(url)

In [ ]:

with open('gee_f.json', encoding="utf-8") as f:
    functions = json.load(f)

functions.keys()

with open('gee_f.json', encoding="utf-8") as f: functions = json.load(f) functions.keys()

In [ ]:

[(x['name'], len(x['contents'])) for x in functions['examples']]

[(x['name'], len(x['contents'])) for x in functions['examples']]

Details¶

In [ ]:

details = [
    (dataset['name'], dataset['code'])
    for x in functions['examples']
    for dataset in x['contents']
    if x['name'] == 'Datasets'
]
details[0]

details = [ (dataset['name'], dataset['code']) for x in functions['examples'] for dataset in x['contents'] if x['name'] == 'Datasets' ] details[0]

Convert js to py¶

In [ ]:

def get_py(js):
    try:
        return geemap.js_snippet_to_py(
            js, add_new_cell=False, import_ee=False, import_geemap=False, show_map=False
        )
    except:
        return None


results_convert = [get_py(js) for _, js in details]

def get_py(js): try: return geemap.js_snippet_to_py( js, add_new_cell=False, import_ee=False, import_geemap=False, show_map=False ) except: return None results_convert = [get_py(js) for _, js in details]

In [ ]:

len(details), len(results_convert)

len(details), len(results_convert)

Except for 2 cases, converts ran without error.

In [ ]:

len([x for x in results_convert if x])

len([x for x in results_convert if x])

Verify availability¶

In [ ]:

from geemap import datasets

len(datasets.get_ee_stac_list())

from geemap import datasets len(datasets.get_ee_stac_list())

In [ ]:

known_datasets = set(name.replace('/', '_') for name in datasets.get_ee_stac_list())
known_code = set(name for name, _ in details)

known_datasets = set(name.replace('/', '_') for name in datasets.get_ee_stac_list()) known_code = set(name for name, _ in details)

Only some have exact matches¶

In [ ]:

len(known_code & known_datasets)

len(known_code & known_datasets)

Sometimes there is a 2 example available for a dataset, mostly FeatureViews.

In [ ]:

excess = known_code - known_datasets

excess = known_code - known_datasets

In [ ]:

len(excess)

len(excess)

In [ ]:

excess_no_featureview = set(x.replace('_FeatureView', '') for x in known_code)
len(excess_no_featureview - known_datasets)

excess_no_featureview = set(x.replace('_FeatureView', '') for x in known_code) len(excess_no_featureview - known_datasets)

Leftovers

In [ ]:

(excess_no_featureview - known_datasets)

(excess_no_featureview - known_datasets)

Datasets without examples¶

In [ ]:

missing_code = known_datasets - known_code
len(missing_code)

missing_code = known_datasets - known_code len(missing_code)

These are also missing in gee itself (logically as these load from f.json).

• https://code.earthengine.google.com/?scriptPath=Examples%3ADatasets%2FLANDSAT_LC8

Deprecated stuff afaik, s.a. Landsat LT1

In [ ]:

missing_code

missing_code

In [ ]:

from geemap import common

[x['title'] for x in common.search_ee_data('LANDSAT L1T')][:5]

from geemap import common [x['title'] for x in common.search_ee_data('LANDSAT L1T')][:5]

In [ ]:

[(x['uid'], x['title']) for x in common.search_ee_data('MODIS MYD')][:5]

[(x['uid'], x['title']) for x in common.search_ee_data('MODIS MYD')][:5]

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Last update: 2023-04-06
Created: 2022-08-11