18 create landsat timelapse
Uncomment the following line to install geemap if needed.
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# !pip install geemap
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import geemap
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geemap.show_youtube('OwjSJnGWKJs')
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# geemap.update_package()
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Map = geemap.Map()
Map
Generate a Landsat timelapse animation¶
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import os
out_dir = os.path.join(os.path.expanduser("~"), 'Downloads')
if not os.path.exists(out_dir):
os.makedirs(out_dir)
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label = 'Urban Growth in Las Vegas'
Map.add_landsat_ts_gif(label=label, start_year=1985, bands=['Red', 'Green', 'Blue'], font_color='white', frames_per_second=10, progress_bar_color='blue')
Create Landsat timeseries¶
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import os
import ee
import geemap
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Map = geemap.Map()
Map
You and define an roi or draw a rectangle on the map
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roi = ee.Geometry.Polygon(
[[[-115.471773, 35.892718],
[-115.471773, 36.409454],
[-114.271283, 36.409454],
[-114.271283, 35.892718],
[-115.471773, 35.892718]]], None, False)
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# roi = Map.draw_last_feature
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collection = geemap.landsat_timeseries(roi=roi, start_year=1985, end_year=2019, start_date='06-10', end_date='09-20')
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print(collection.size().getInfo())
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first_image = collection.first()
vis = {
'bands': ['NIR', 'Red', 'Green'],
'min': 0,
'max': 4000,
'gamma': [1, 1, 1]
}
Map.addLayer(first_image, vis, 'First image')
Download ImageCollection as a GIF¶
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# Define arguments for animation function parameters.
video_args = {
'dimensions': 768,
'region': roi,
'framesPerSecond': 10,
'bands': ['NIR', 'Red', 'Green'],
'min': 0,
'max': 4000,
'gamma': [1, 1, 1]
}
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work_dir = os.path.join(os.path.expanduser("~"), 'Downloads')
if not os.path.exists(work_dir):
os.makedirs(work_dir)
out_gif = os.path.join(work_dir, "landsat_ts.gif")
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geemap.download_ee_video(collection, video_args, out_gif)
Add animated text to GIF¶
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geemap.show_image(out_gif)
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texted_gif = os.path.join(work_dir, "landsat_ts_text.gif")
geemap.add_text_to_gif(out_gif, texted_gif, xy=('3%', '5%'), text_sequence=1985, font_size=30, font_color='#ffffff', add_progress_bar=False)
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label = 'Urban Growth in Las Vegas'
geemap.add_text_to_gif(texted_gif, texted_gif, xy=('2%', '88%'), text_sequence=label, font_size=30, font_color='#ffffff', progress_bar_color='cyan')
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geemap.show_image(texted_gif)
Last update: 2021-02-25