Ipywidgets intro

Introduction to ipywidgets

https://ipywidgets.readthedocs.io

Import libraries¶

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# !pip install geodemo
# !pip install geodemo

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import ee
import geodemo
import ipywidgets as widgets
from ipyleaflet import WidgetControl
import ee
import geodemo
import ipywidgets as widgets
from ipyleaflet import WidgetControl

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Cell In[2], line 2
      1 import ee
----> 2 import geodemo
      3 import ipywidgets as widgets
      4 from ipyleaflet import WidgetControl

ModuleNotFoundError: No module named 'geodemo'

Create an interactive map¶

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Map = geodemo.Map()
Map
Map = geodemo.Map()
Map

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[3], line 1
----> 1 Map = geodemo.Map()
      2 Map

NameError: name 'geodemo' is not defined

Add Earth Engine data¶

Add raster data¶

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geodemo.ee_initialize()
geodemo.ee_initialize()

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[4], line 1
----> 1 geodemo.ee_initialize()

NameError: name 'geodemo' is not defined

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dem = ee.Image('USGS/SRTMGL1_003')

vis_params = {
  'min': 0,
  'max': 4000,
  'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5']}

Map.addLayer(dem, vis_params, 'DEM')
dem = ee.Image('USGS/SRTMGL1_003')

vis_params = {
  'min': 0,
  'max': 4000,
  'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5']}

Map.addLayer(dem, vis_params, 'DEM')

---------------------------------------------------------------------------
EEException                               Traceback (most recent call last)
Cell In[5], line 1
----> 1 dem = ee.Image('USGS/SRTMGL1_003')
      3 vis_params = {
      4   'min': 0,
      5   'max': 4000,
      6   'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5']}
      8 Map.addLayer(dem, vis_params, 'DEM')

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\computedobject.py:29, in ComputedObjectMetaclass.__call__(cls, *args, **kwargs)
     27   return args[0]
     28 else:
---> 29   return type.__call__(cls, *args, **kwargs)

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\deprecation.py:127, in WarnForDeprecatedAsset.<locals>.Decorator.<locals>.Wrapper(*args, **kwargs)
    125   if asset:
    126     _IssueAssetDeprecationWarning(asset)
--> 127 return func(*args, **kwargs)

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\image.py:73, in Image.__init__(self, args, version)
     54 @deprecation.WarnForDeprecatedAsset('args')
     55 def __init__(self, args: Any | None = None, version: float | None = None):
     56   """Constructs an Earth Engine image.
     57 
     58   Args:
   (...)     71     EEException: if passed something other than the above.
     72   """
---> 73   self.initialize()
     75   if version is not None:
     76     if ee_types.isString(args) and ee_types.isNumber(version):
     77       # An ID and version.

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\image.py:119, in Image.initialize(cls)
    117 """Imports API functions to this class."""
    118 if not cls._initialized:
--> 119   apifunction.ApiFunction.importApi(cls, cls.name(), cls.name())
    120   cls._initialized = True

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\_utils.py:39, in accept_opt_prefix.<locals>.opt_fixed.<locals>.wrapper(*args, **kwargs)
     37     if new_key not in kwargs:
     38       kwargs[new_key] = old_key_val
---> 39 return func(*args, **kwargs)

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\apifunction.py:199, in ApiFunction.importApi(cls, target, prefix, type_name, prepend)
    179 @classmethod
    180 @_utils.accept_opt_prefix('opt_prepend')
    181 def importApi(
   (...)    186     prepend: str | None = None,
    187 ) -> None:
    188   """Adds all API functions that begin with a given prefix to a target class.
    189 
    190   Args:
   (...)    197       functions.
    198   """
--> 199   cls.initialize()
    200   prepend = prepend or ''
    201   for name, api_func in cls._api.items():

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\apifunction.py:163, in ApiFunction.initialize(cls)
    161 """Initializes the list of signatures from the Earth Engine front-end."""
    162 if not cls._api:
--> 163   signatures = data.getAlgorithms()
    164   api = {}
    165   for name, sig in signatures.items():
    166     # Strip type parameters.

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\data.py:1421, in getAlgorithms()
   1404 """Get the list of algorithms.
   1405 
   1406 Returns:
   (...)   1417               is not specified.
   1418 """
   1419 try:
   1420   call = (
-> 1421       _get_cloud_projects()
   1422       .algorithms()
   1423       .list(parent=_get_projects_path(), prettyPrint=False)
   1424   )
   1425 except TypeError:
   1426   call = (
   1427       _get_cloud_projects()
   1428       .algorithms()
   1429       .list(project=_get_projects_path(), prettyPrint=False)
   1430   )

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\data.py:289, in _get_cloud_projects()
    287 state = _get_state()
    288 if state.cloud_api_resource is None:
--> 289   raise ee_exception.EEException(_NOT_INITIALIZED_MESSAGE)
    290 return state.cloud_api_resource.projects()

EEException: Earth Engine client library not initialized. See http://goo.gle/ee-auth.

Add vector data¶

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fc = ee.FeatureCollection('TIGER/2018/States')
Map.addLayer(fc, {}, 'US States')
fc = ee.FeatureCollection('TIGER/2018/States')
Map.addLayer(fc, {}, 'US States')

---------------------------------------------------------------------------
EEException                               Traceback (most recent call last)
Cell In[6], line 1
----> 1 fc = ee.FeatureCollection('TIGER/2018/States')
      2 Map.addLayer(fc, {}, 'US States')

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\computedobject.py:29, in ComputedObjectMetaclass.__call__(cls, *args, **kwargs)
     27   return args[0]
     28 else:
---> 29   return type.__call__(cls, *args, **kwargs)

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\_utils.py:39, in accept_opt_prefix.<locals>.opt_fixed.<locals>.wrapper(*args, **kwargs)
     37     if new_key not in kwargs:
     38       kwargs[new_key] = old_key_val
---> 39 return func(*args, **kwargs)

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\deprecation.py:127, in WarnForDeprecatedAsset.<locals>.Decorator.<locals>.Wrapper(*args, **kwargs)
    125   if asset:
    126     _IssueAssetDeprecationWarning(asset)
--> 127 return func(*args, **kwargs)

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\featurecollection.py:63, in FeatureCollection.__init__(self, args, column)
     33 @_utils.accept_opt_prefix('opt_column')
     34 @deprecation.WarnForDeprecatedAsset('args')
     35 def __init__(
   (...)     45     column: Any | None = None,
     46 ):
     47   """Constructs a collection features.
     48 
     49   Args:
   (...)     61     EEException: if passed something other than the above.
     62   """
---> 63   self.initialize()
     65   # Wrap geometries with features.
     66   if isinstance(args, geometry.Geometry):

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\featurecollection.py:109, in FeatureCollection.initialize(cls)
    107 """Imports API functions to this class."""
    108 if not cls._initialized:
--> 109   super().initialize()
    110   apifunction.ApiFunction.importApi(cls, cls.name(), cls.name())
    111   cls._initialized = True

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\collection.py:57, in Collection.initialize(cls)
     55 """Imports API functions to this class."""
     56 if not cls._initialized:
---> 57   apifunction.ApiFunction.importApi(cls, cls.name(), cls.name())
     58   apifunction.ApiFunction.importApi(
     59       cls, 'AggregateFeatureCollection', cls.name(), 'aggregate_')
     60   cls._initialized = True

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\_utils.py:39, in accept_opt_prefix.<locals>.opt_fixed.<locals>.wrapper(*args, **kwargs)
     37     if new_key not in kwargs:
     38       kwargs[new_key] = old_key_val
---> 39 return func(*args, **kwargs)

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\apifunction.py:199, in ApiFunction.importApi(cls, target, prefix, type_name, prepend)
    179 @classmethod
    180 @_utils.accept_opt_prefix('opt_prepend')
    181 def importApi(
   (...)    186     prepend: str | None = None,
    187 ) -> None:
    188   """Adds all API functions that begin with a given prefix to a target class.
    189 
    190   Args:
   (...)    197       functions.
    198   """
--> 199   cls.initialize()
    200   prepend = prepend or ''
    201   for name, api_func in cls._api.items():

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\apifunction.py:163, in ApiFunction.initialize(cls)
    161 """Initializes the list of signatures from the Earth Engine front-end."""
    162 if not cls._api:
--> 163   signatures = data.getAlgorithms()
    164   api = {}
    165   for name, sig in signatures.items():
    166     # Strip type parameters.

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\data.py:1421, in getAlgorithms()
   1404 """Get the list of algorithms.
   1405 
   1406 Returns:
   (...)   1417               is not specified.
   1418 """
   1419 try:
   1420   call = (
-> 1421       _get_cloud_projects()
   1422       .algorithms()
   1423       .list(parent=_get_projects_path(), prettyPrint=False)
   1424   )
   1425 except TypeError:
   1426   call = (
   1427       _get_cloud_projects()
   1428       .algorithms()
   1429       .list(project=_get_projects_path(), prettyPrint=False)
   1430   )

File ~\miniconda3\envs\demo311\Lib\site-packages\ee\data.py:289, in _get_cloud_projects()
    287 state = _get_state()
    288 if state.cloud_api_resource is None:
--> 289   raise ee_exception.EEException(_NOT_INITIALIZED_MESSAGE)
    290 return state.cloud_api_resource.projects()

EEException: Earth Engine client library not initialized. See http://goo.gle/ee-auth.

Change layer opacity¶

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Map
Map

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[7], line 1
----> 1 Map

NameError: name 'Map' is not defined

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Map.layers
Map.layers

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[8], line 1
----> 1 Map.layers

NameError: name 'Map' is not defined

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dem_layer = Map.layers[2]
dem_layer.interact(opacity=(0, 1, 0.1))
dem_layer = Map.layers[2]
dem_layer.interact(opacity=(0, 1, 0.1))

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[9], line 1
----> 1 dem_layer = Map.layers[2]
      2 dem_layer.interact(opacity=(0, 1, 0.1))

NameError: name 'Map' is not defined

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vector_layer = Map.layers[3]
vector_layer.interact(opacity=(0, 1, 0.1))
vector_layer = Map.layers[3]
vector_layer.interact(opacity=(0, 1, 0.1))

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[10], line 1
----> 1 vector_layer = Map.layers[3]
      2 vector_layer.interact(opacity=(0, 1, 0.1))

NameError: name 'Map' is not defined

Widget list: https://ipywidgets.readthedocs.io/en/latest/examples/Widget%20List.html

Icons: https://fontawesome.com/v4.7.0/icons

Numeric widgets¶

IntSlider¶

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int_slider = widgets.IntSlider(
    value=2000,
    min=1984,
    max=2020,
    step=1,
    description='Year:'
)
int_slider
int_slider = widgets.IntSlider(
    value=2000,
    min=1984,
    max=2020,
    step=1,
    description='Year:'
)
int_slider

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[11], line 1
----> 1 int_slider = widgets.IntSlider(
      2     value=2000,
      3     min=1984,
      4     max=2020,
      5     step=1,
      6     description='Year:'
      7 )
      8 int_slider

NameError: name 'widgets' is not defined

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int_slider.value
int_slider.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[12], line 1
----> 1 int_slider.value

NameError: name 'int_slider' is not defined

FloatSlider¶

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float_slider = widgets.FloatSlider(
    value=0,
    min=-1,
    max=1,
    step=0.05,
    description='Threshold:'
)
float_slider
float_slider = widgets.FloatSlider(
    value=0,
    min=-1,
    max=1,
    step=0.05,
    description='Threshold:'
)
float_slider

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[13], line 1
----> 1 float_slider = widgets.FloatSlider(
      2     value=0,
      3     min=-1,
      4     max=1,
      5     step=0.05,
      6     description='Threshold:'
      7 )
      8 float_slider

NameError: name 'widgets' is not defined

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float_slider.value
float_slider.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[14], line 1
----> 1 float_slider.value

NameError: name 'float_slider' is not defined

IntProgress¶

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int_progress = widgets.IntProgress(
    value=7,
    min=0,
    max=10,
    step=1,
    description='Loading:',
    bar_style='', # 'success', 'info', 'warning', 'danger' or ''
    orientation='horizontal'
)
int_progress
int_progress = widgets.IntProgress(
    value=7,
    min=0,
    max=10,
    step=1,
    description='Loading:',
    bar_style='', # 'success', 'info', 'warning', 'danger' or ''
    orientation='horizontal'
)
int_progress

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[15], line 1
----> 1 int_progress = widgets.IntProgress(
      2     value=7,
      3     min=0,
      4     max=10,
      5     step=1,
      6     description='Loading:',
      7     bar_style='', # 'success', 'info', 'warning', 'danger' or ''
      8     orientation='horizontal'
      9 )
     10 int_progress

NameError: name 'widgets' is not defined

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int_text = widgets.IntText(
    value=7,
    description='Any:',
)
int_text
int_text = widgets.IntText(
    value=7,
    description='Any:',
)
int_text

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[16], line 1
----> 1 int_text = widgets.IntText(
      2     value=7,
      3     description='Any:',
      4 )
      5 int_text

NameError: name 'widgets' is not defined

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float_text = widgets.FloatText(
    value=7.5,
    description='Any:',
)
float_text
float_text = widgets.FloatText(
    value=7.5,
    description='Any:',
)
float_text

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[17], line 1
----> 1 float_text = widgets.FloatText(
      2     value=7.5,
      3     description='Any:',
      4 )
      5 float_text

NameError: name 'widgets' is not defined

Boolean widgets¶

ToggleButton¶

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toggle_button = widgets.ToggleButton(
    value=False,
    description='Click me',
    disabled=False,
    button_style='success', # 'success', 'info', 'warning', 'danger' or ''
    tooltip='Description',
    icon='check' # (FontAwesome names without the `fa-` prefix)
)
toggle_button
toggle_button = widgets.ToggleButton(
    value=False,
    description='Click me',
    disabled=False,
    button_style='success', # 'success', 'info', 'warning', 'danger' or ''
    tooltip='Description',
    icon='check' # (FontAwesome names without the `fa-` prefix)
)
toggle_button

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[18], line 1
----> 1 toggle_button = widgets.ToggleButton(
      2     value=False,
      3     description='Click me',
      4     disabled=False,
      5     button_style='success', # 'success', 'info', 'warning', 'danger' or ''
      6     tooltip='Description',
      7     icon='check' # (FontAwesome names without the `fa-` prefix)
      8 )
      9 toggle_button

NameError: name 'widgets' is not defined

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toggle_button.value
toggle_button.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[19], line 1
----> 1 toggle_button.value

NameError: name 'toggle_button' is not defined

Checkbox¶

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checkbox = widgets.Checkbox(
    value=False,
    description='Check me',
    disabled=False,
    indent=False
)
checkbox
checkbox = widgets.Checkbox(
    value=False,
    description='Check me',
    disabled=False,
    indent=False
)
checkbox

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[20], line 1
----> 1 checkbox = widgets.Checkbox(
      2     value=False,
      3     description='Check me',
      4     disabled=False,
      5     indent=False
      6 )
      7 checkbox

NameError: name 'widgets' is not defined

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checkbox.value
checkbox.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[21], line 1
----> 1 checkbox.value

NameError: name 'checkbox' is not defined

Selection widgets¶

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dropdown = widgets.Dropdown(
    options=['USA', 'Canada', 'Mexico'],
    value='Canada',
    description='Country:'
)
dropdown
dropdown = widgets.Dropdown(
    options=['USA', 'Canada', 'Mexico'],
    value='Canada',
    description='Country:'
)
dropdown

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[22], line 1
----> 1 dropdown = widgets.Dropdown(
      2     options=['USA', 'Canada', 'Mexico'],
      3     value='Canada',
      4     description='Country:'
      5 )
      6 dropdown

NameError: name 'widgets' is not defined

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dropdown.value
dropdown.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[23], line 1
----> 1 dropdown.value

NameError: name 'dropdown' is not defined

RadioButtons¶

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radio_buttons = widgets.RadioButtons(
    options=['USA', 'Canada', 'Mexico'],
    value='Canada',
    description='Country:'
)
radio_buttons
radio_buttons = widgets.RadioButtons(
    options=['USA', 'Canada', 'Mexico'],
    value='Canada',
    description='Country:'
)
radio_buttons

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[24], line 1
----> 1 radio_buttons = widgets.RadioButtons(
      2     options=['USA', 'Canada', 'Mexico'],
      3     value='Canada',
      4     description='Country:'
      5 )
      6 radio_buttons

NameError: name 'widgets' is not defined

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radio_buttons.value
radio_buttons.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[25], line 1
----> 1 radio_buttons.value

NameError: name 'radio_buttons' is not defined

String widgets¶

Text¶

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text = widgets.Text(
    value='USA',
    placeholder='Enter a country name',
    description='Country:',
    disabled=False
)
text
text = widgets.Text(
    value='USA',
    placeholder='Enter a country name',
    description='Country:',
    disabled=False
)
text

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[26], line 1
----> 1 text = widgets.Text(
      2     value='USA',
      3     placeholder='Enter a country name',
      4     description='Country:',
      5     disabled=False
      6 )
      7 text

NameError: name 'widgets' is not defined

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text.value
text.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[27], line 1
----> 1 text.value

NameError: name 'text' is not defined

Textarea¶

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widgets.Textarea(
    value='Hello World',
    placeholder='Type something',
    description='String:',
    disabled=False
)
widgets.Textarea(
    value='Hello World',
    placeholder='Type something',
    description='String:',
    disabled=False
)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[28], line 1
----> 1 widgets.Textarea(
      2     value='Hello World',
      3     placeholder='Type something',
      4     description='String:',
      5     disabled=False
      6 )

NameError: name 'widgets' is not defined

HTML¶

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widgets.HTML(
    value="Hello <b>World</b>",
    placeholder='Some HTML',
    description='Some HTML',
)
widgets.HTML(
    value="Hello World",
    placeholder='Some HTML',
    description='Some HTML',
)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[29], line 1
----> 1 widgets.HTML(
      2     value="Hello <b>World</b>",
      3     placeholder='Some HTML',
      4     description='Some HTML',
      5 )

NameError: name 'widgets' is not defined

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widgets.HTML(
    value='<img src="https://earthengine.google.com/static/images/earth-engine-logo.png" width="100" height="100">'
)
widgets.HTML(
    value=''
)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[30], line 1
----> 1 widgets.HTML(
      2     value='<img src="https://earthengine.google.com/static/images/earth-engine-logo.png" width="100" height="100">'
      3 )

NameError: name 'widgets' is not defined

Button¶

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button = widgets.Button(
    description='Click me',
    button_style='info', # 'success', 'info', 'warning', 'danger' or ''
    tooltip='Click me',
    icon='check' # (FontAwesome names without the `fa-` prefix)
)
button
button = widgets.Button(
    description='Click me',
    button_style='info', # 'success', 'info', 'warning', 'danger' or ''
    tooltip='Click me',
    icon='check' # (FontAwesome names without the `fa-` prefix)
)
button

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[31], line 1
----> 1 button = widgets.Button(
      2     description='Click me',
      3     button_style='info', # 'success', 'info', 'warning', 'danger' or ''
      4     tooltip='Click me',
      5     icon='check' # (FontAwesome names without the `fa-` prefix)
      6 )
      7 button

NameError: name 'widgets' is not defined

Date picker¶

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date_picker = widgets.DatePicker(
    description='Pick a Date',
    disabled=False
)
date_picker
date_picker = widgets.DatePicker(
    description='Pick a Date',
    disabled=False
)
date_picker

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[32], line 1
----> 1 date_picker = widgets.DatePicker(
      2     description='Pick a Date',
      3     disabled=False
      4 )
      5 date_picker

NameError: name 'widgets' is not defined

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date_picker.value
date_picker.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[33], line 1
----> 1 date_picker.value

NameError: name 'date_picker' is not defined

Color picker¶

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color_picker = widgets.ColorPicker(
    concise=False,
    description='Pick a color',
    value='blue',
    disabled=False
)
color_picker
color_picker = widgets.ColorPicker(
    concise=False,
    description='Pick a color',
    value='blue',
    disabled=False
)
color_picker

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[34], line 1
----> 1 color_picker = widgets.ColorPicker(
      2     concise=False,
      3     description='Pick a color',
      4     value='blue',
      5     disabled=False
      6 )
      7 color_picker

NameError: name 'widgets' is not defined

In [35]:

Copied!

color_picker.value
color_picker.value

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[35], line 1
----> 1 color_picker.value

NameError: name 'color_picker' is not defined

In [36]:

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out = widgets.Output(layout={'border': '1px solid black'})
out
out = widgets.Output(layout={'border': '1px solid black'})
out

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[36], line 1
----> 1 out = widgets.Output(layout={'border': '1px solid black'})
      2 out

NameError: name 'widgets' is not defined

In [37]:

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with out:
    for i in range(10):
        print(i, 'Hello world!')
with out:
    for i in range(10):
        print(i, 'Hello world!')

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[37], line 1
----> 1 with out:
      2     for i in range(10):
      3         print(i, 'Hello world!')

NameError: name 'out' is not defined

In [38]:

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from IPython.display import YouTubeVideo
out.clear_output()
with out:
    display(YouTubeVideo('mA21Us_3m28'))
out
from IPython.display import YouTubeVideo
out.clear_output()
with out:
    display(YouTubeVideo('mA21Us_3m28'))
out

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[38], line 2
      1 from IPython.display import YouTubeVideo
----> 2 out.clear_output()
      3 with out:
      4     display(YouTubeVideo('mA21Us_3m28'))

NameError: name 'out' is not defined

In [39]:

Copied!





out.clear_output()
with out:
    display(widgets.IntSlider())
out
out.clear_output()
with out:
    display(widgets.IntSlider())
out

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[39], line 1
----> 1 out.clear_output()
      2 with out:
      3     display(widgets.IntSlider())

NameError: name 'out' is not defined

In [40]:

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Map = geodemo.Map()

dem = ee.Image('USGS/SRTMGL1_003')
fc = ee.FeatureCollection('TIGER/2018/States')
vis_params = {
  'min': 0,
  'max': 4000,
  'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5']}

Map.addLayer(dem, vis_params, 'DEM')
Map.addLayer(fc, {}, 'US States')

Map
Map = geodemo.Map()

dem = ee.Image('USGS/SRTMGL1_003')
fc = ee.FeatureCollection('TIGER/2018/States')
vis_params = {
  'min': 0,
  'max': 4000,
  'palette': ['006633', 'E5FFCC', '662A00', 'D8D8D8', 'F5F5F5']}

Map.addLayer(dem, vis_params, 'DEM')
Map.addLayer(fc, {}, 'US States')

Map

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[40], line 1
----> 1 Map = geodemo.Map()
      3 dem = ee.Image('USGS/SRTMGL1_003')
      4 fc = ee.FeatureCollection('TIGER/2018/States')

NameError: name 'geodemo' is not defined

In [41]:

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output_widget = widgets.Output(layout={'border': '1px solid black'})
output_control = WidgetControl(widget=output_widget, position='bottomright')
Map.add_control(output_control)
output_widget = widgets.Output(layout={'border': '1px solid black'})
output_control = WidgetControl(widget=output_widget, position='bottomright')
Map.add_control(output_control)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[41], line 1
----> 1 output_widget = widgets.Output(layout={'border': '1px solid black'})
      2 output_control = WidgetControl(widget=output_widget, position='bottomright')
      3 Map.add_control(output_control)

NameError: name 'widgets' is not defined

In [42]:

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with output_widget:
    print('Nice map!')
with output_widget:
    print('Nice map!')

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[42], line 1
----> 1 with output_widget:
      2     print('Nice map!')

NameError: name 'output_widget' is not defined

In [43]:

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output_widget.clear_output()
logo = widgets.HTML(
    value='<img src="https://earthengine.google.com/static/images/earth-engine-logo.png" width="100" height="100">'
)
with output_widget:
    display(logo)
output_widget.clear_output()
logo = widgets.HTML(
    value=''
)
with output_widget:
    display(logo)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[43], line 1
----> 1 output_widget.clear_output()
      2 logo = widgets.HTML(
      3     value='<img src="https://earthengine.google.com/static/images/earth-engine-logo.png" width="100" height="100">'
      4 )
      5 with output_widget:

NameError: name 'output_widget' is not defined

In [44]:

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def handle_interaction(**kwargs):
    latlon = kwargs.get('coordinates')
    if kwargs.get('type') == 'click':
        Map.default_style = {'cursor': 'wait'}
        xy = ee.Geometry.Point(latlon[::-1])
        selected_fc = fc.filterBounds(xy)
        
        with output_widget:
            output_widget.clear_output()
        
            try:
                name = selected_fc.first().get('NAME').getInfo()
                usps = selected_fc.first().get('STUSPS').getInfo()
                Map.layers = Map.layers[:4]        
                geom = selected_fc.geometry()
                layer_name = name + '-' + usps
                Map.addLayer(ee.Image().paint(geom, 0, 2), {'palette': 'red'}, layer_name)  
                print(layer_name)
            except Exception as e:
                print('No feature could be found')
                Map.layers = Map.layers[:4]
            
        Map.default_style = {'cursor': 'pointer'}

Map.on_interaction(handle_interaction)
def handle_interaction(**kwargs):
    latlon = kwargs.get('coordinates')
    if kwargs.get('type') == 'click':
        Map.default_style = {'cursor': 'wait'}
        xy = ee.Geometry.Point(latlon[::-1])
        selected_fc = fc.filterBounds(xy)
        
        with output_widget:
            output_widget.clear_output()
        
            try:
                name = selected_fc.first().get('NAME').getInfo()
                usps = selected_fc.first().get('STUSPS').getInfo()
                Map.layers = Map.layers[:4]        
                geom = selected_fc.geometry()
                layer_name = name + '-' + usps
                Map.addLayer(ee.Image().paint(geom, 0, 2), {'palette': 'red'}, layer_name)  
                print(layer_name)
            except Exception as e:
                print('No feature could be found')
                Map.layers = Map.layers[:4]
            
        Map.default_style = {'cursor': 'pointer'}

Map.on_interaction(handle_interaction)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[44], line 25
     21                 Map.layers = Map.layers[:4]
     23         Map.default_style = {'cursor': 'pointer'}
---> 25 Map.on_interaction(handle_interaction)

NameError: name 'Map' is not defined

Ipywidgets intro

Import libraries¶

Create an interactive map¶

Add Earth Engine data¶

Add raster data¶

Add vector data¶

Change layer opacity¶

Widget list¶

Numeric widgets¶

IntSlider¶

FloatSlider¶

IntProgress¶

Boolean widgets¶

ToggleButton¶

Checkbox¶

Selection widgets¶

RadioButtons¶

String widgets¶

Text¶

Textarea¶

HTML¶

Button¶

Date picker¶

Color picker¶

Output widget¶

Add a widget to the map¶

Ipywidgets intro

Import libraries¶

Create an interactive map¶

Add Earth Engine data¶

Add raster data¶

Add vector data¶

Change layer opacity¶

Widget list¶

Numeric widgets¶

IntSlider¶

FloatSlider¶

IntProgress¶

Boolean widgets¶

ToggleButton¶

Checkbox¶

Selection widgets¶

Dropdown¶

RadioButtons¶

String widgets¶

Text¶

Textarea¶

HTML¶

Button¶

Date picker¶

Color picker¶

Output widget¶

Add a widget to the map¶