Earthengine intro

In [1]:

import ee
import geohydrodemo

import ee import geohydrodemo

In [2]:

Map = geohydrodemo.Map()
Map

Map = geohydrodemo.Map() Map

Out[2]:

In [3]:

geohydrodemo.ee_initilization()

geohydrodemo.ee_initilization()

In [4]:

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

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

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

In [5]:

ee_layer = geohydrodemo.ee_tile_layer(dem, vis_params, "DEM")

ee_layer = geohydrodemo.ee_tile_layer(dem, vis_params, "DEM")

In [6]:

Map.add_layer(ee_layer)

Map.add_layer(ee_layer)

In [7]:

# Map.addLayer(dem, vis_params, "DEM")

# Map.addLayer(dem, vis_params, "DEM")

In [8]:

import ipywidgets as widgets

import ipywidgets as widgets

In [9]:

slider = widgets.FloatSlider(min=0, max=1, step=0.01)
slider

slider = widgets.FloatSlider(min=0, max=1, step=0.01) slider

Out[9]:

In [10]:

widgets.jslink((ee_layer, "opacity"), (slider, "value"))

widgets.jslink((ee_layer, "opacity"), (slider, "value"))

Out[10]:

Link(source=(TileLayer(attribution='Google Earth Engine', name='DEM', options=['attribution', 'bounds', 'detect_retina', 'max_native_zoom', 'max_zoom', 'min_native_zoom', 'min_zoom', 'no_wrap', 'tile_size', 'tms', 'zoom_offset'], url='https://earthengine.googleapis.com/v1/projects/earthengine-legacy/maps/82302bf76471cbc4d71eafdc4e3c615a-ff2ab9f705bfbea8781de3f8eadc340a/tiles/{z}/{x}/{y}'), 'opacity'), target=(FloatSlider(value=0.0, max=1.0, step=0.01), 'value'))

In [11]:

from ipyleaflet import WidgetControl

from ipyleaflet import WidgetControl

In [12]:

control = WidgetControl(widget=slider, position="bottomright")
Map.add_control(control)

control = WidgetControl(widget=slider, position="bottomright") Map.add_control(control)

In [ ]:

---

Last update: 2023-08-01
Created: 2023-08-01