27 timelapse app

Uncomment the following line to install geemap if needed.

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# !pip install geemap

# !pip install geemap

Creating Landsat Timelapse¶

Steps to create a Landsat timelapse:

1. Pan and zoom to your region of interest.
2. Use the drawing tool to draw a rectangle anywhere on the map.
3. Adjust the parameters (e.g., start year, end year, title) if needed.
4. Check Download the GIF if you would like to download the timelapse GIF.
5. Click the Submit button to create a timelapse.
6. Deploy the app to heroku. See https://github.com/giswqs/earthengine-apps

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import os
import ee
import geemap
import ipywidgets as widgets

import os import ee import geemap import ipywidgets as widgets

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Map = geemap.Map()
Map

Map = geemap.Map() Map

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out_dir = os.path.join(os.path.expanduser("~"), "Downloads")
if not os.path.exists(out_dir):
    os.makedirs(out_dir)

out_dir = os.path.join(os.path.expanduser("~"), "Downloads") if not os.path.exists(out_dir): os.makedirs(out_dir)

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style = {"description_width": "initial"}
title = widgets.Text(
    description="Title:", value="Landsat Timelapse", width=200, style=style
)

style = {"description_width": "initial"} title = widgets.Text( description="Title:", value="Landsat Timelapse", width=200, style=style )

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bands = widgets.Dropdown(
    description="Select RGB Combo:",
    options=[
        "Red/Green/Blue",
        "NIR/Red/Green",
        "SWIR2/SWIR1/NIR",
        "NIR/SWIR1/Red",
        "SWIR2/NIR/Red",
        "SWIR2/SWIR1/Red",
        "SWIR1/NIR/Blue",
        "NIR/SWIR1/Blue",
        "SWIR2/NIR/Green",
        "SWIR1/NIR/Red",
    ],
    value="NIR/Red/Green",
    style=style,
)

bands = widgets.Dropdown( description="Select RGB Combo:", options=[ "Red/Green/Blue", "NIR/Red/Green", "SWIR2/SWIR1/NIR", "NIR/SWIR1/Red", "SWIR2/NIR/Red", "SWIR2/SWIR1/Red", "SWIR1/NIR/Blue", "NIR/SWIR1/Blue", "SWIR2/NIR/Green", "SWIR1/NIR/Red", ], value="NIR/Red/Green", style=style, )

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hbox1 = widgets.HBox([title, bands])
hbox1

hbox1 = widgets.HBox([title, bands]) hbox1

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start_year = widgets.IntSlider(
    description="Start Year:", value=1984, min=1984, max=2021, style=style
)

start_year = widgets.IntSlider( description="Start Year:", value=1984, min=1984, max=2021, style=style )

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end_year = widgets.IntSlider(
    description="End Year:", value=2021, min=1984, max=2021, style=style
)

end_year = widgets.IntSlider( description="End Year:", value=2021, min=1984, max=2021, style=style )

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hbox2 = widgets.HBox([start_year, end_year])
hbox2

hbox2 = widgets.HBox([start_year, end_year]) hbox2

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speed = widgets.IntSlider(
    description="Frames per second:",
    tooltip="Frames per second:",
    value=10,
    min=1,
    max=30,
    style=style,
)

speed = widgets.IntSlider( description="Frames per second:", tooltip="Frames per second:", value=10, min=1, max=30, style=style, )

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download = widgets.Checkbox(value=False, description="Download the GIF", style=style)

download = widgets.Checkbox(value=False, description="Download the GIF", style=style)

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hbox3 = widgets.HBox([speed, download])
hbox3

hbox3 = widgets.HBox([speed, download]) hbox3

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font_size = widgets.IntSlider(
    description="Font size:", value=30, min=10, max=50, style=style
)

font_size = widgets.IntSlider( description="Font size:", value=30, min=10, max=50, style=style )

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font_color = widgets.ColorPicker(
    concise=False, description="Font color:", value="white", style=style
)

font_color = widgets.ColorPicker( concise=False, description="Font color:", value="white", style=style )

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progress_bar_color = widgets.ColorPicker(
    concise=False, description="Progress bar color:", value="blue", style=style
)

progress_bar_color = widgets.ColorPicker( concise=False, description="Progress bar color:", value="blue", style=style )

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hbox4 = widgets.HBox([font_size, font_color, progress_bar_color])
hbox4

hbox4 = widgets.HBox([font_size, font_color, progress_bar_color]) hbox4

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submit = widgets.Button(
    description="Submit",
    button_style="primary",
    tooltip="Click the submit the request to create timelapse",
    style=style,
)

output = widgets.Output()

submit = widgets.Button( description="Submit", button_style="primary", tooltip="Click the submit the request to create timelapse", style=style, ) output = widgets.Output()

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def submit_clicked(b):
    with output:
        output.clear_output()
        if start_year.value >= end_year.value:
            print("The end year must be great than the start year.")
            return
        print("Computing...")

        Map.add_landsat_ts_gif(
            roi=Map.user_roi,
            label=title.value,
            start_year=start_year.value,
            end_year=end_year.value,
            start_date="05-01",
            end_date="10-31",
            bands=bands.value.split("/"),
            font_color=font_color.value,
            frames_per_second=speed.value,
            font_size=font_size.value,
            progress_bar_color=progress_bar_color.value,
            download=download.value,
        )


submit.on_click(submit_clicked)

def submit_clicked(b): with output: output.clear_output() if start_year.value >= end_year.value: print("The end year must be great than the start year.") return print("Computing...") Map.add_landsat_ts_gif( roi=Map.user_roi, label=title.value, start_year=start_year.value, end_year=end_year.value, start_date="05-01", end_date="10-31", bands=bands.value.split("/"), font_color=font_color.value, frames_per_second=speed.value, font_size=font_size.value, progress_bar_color=progress_bar_color.value, download=download.value, ) submit.on_click(submit_clicked)

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submit

submit

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output

output