16 add animated text

Uncomment the following line to install geemap if needed.

In [1]:

# !pip install geemap

# !pip install geemap

In [2]:

import geemap
import os

import geemap import os

In [3]:

geemap.show_youtube('fDnDVuM_Ke4')

geemap.show_youtube('fDnDVuM_Ke4')

Update the geemap package¶

If you run into errors with this notebook, please uncomment the line below to update the geemap package to the latest version from GitHub. Restart the Kernel (Menu -> Kernel -> Restart) to take effect.

In [4]:

# geemap.update_package()

# geemap.update_package()

Add animated text to an existing GIF¶

You can download this GIF example from here. You can also create GIF images from Earth Engine data using this amazing LT-GEE Time Series Animator, which was created by Justin Braaten.

In [5]:

in_gif = os.path.abspath('../data/animation.gif')
out_dir = os.path.join(os.path.expanduser('~'), 'Downloads')
out_gif = os.path.join(out_dir, 'output.gif')
if not os.path.exists(out_dir):
    os.makedirs(out_dir)

in_gif = os.path.abspath('../data/animation.gif') out_dir = os.path.join(os.path.expanduser('~'), 'Downloads') out_gif = os.path.join(out_dir, 'output.gif') if not os.path.exists(out_dir): os.makedirs(out_dir)

In [6]:

geemap.show_image(in_gif)

geemap.show_image(in_gif)

Add animated text to GIF¶

In [7]:

geemap.add_text_to_gif(
    in_gif,
    out_gif,
    xy=('5%', '5%'),
    text_sequence=1984,
    font_size=30,
    font_color='#0000ff',
    duration=100,
)

geemap.add_text_to_gif( in_gif, out_gif, xy=('5%', '5%'), text_sequence=1984, font_size=30, font_color='#0000ff', duration=100, )

The input gif file does not exist.

In [8]:

geemap.show_image(out_gif)

geemap.show_image(out_gif)

Add place name¶

In [9]:

geemap.add_text_to_gif(
    out_gif, out_gif, xy=('30%', '85%'), text_sequence="Las Vegas", font_color='black'
)

geemap.add_text_to_gif( out_gif, out_gif, xy=('30%', '85%'), text_sequence="Las Vegas", font_color='black' )

The input gif file does not exist.

In [10]:

geemap.show_image(out_gif)

geemap.show_image(out_gif)

Change font type¶

In [11]:

geemap.system_fonts()

geemap.system_fonts()

Out[11]:

['DejaVuMathTeXGyre.ttf',
 'DejaVuSans-Bold.ttf',
 'DejaVuSans-BoldOblique.ttf',
 'DejaVuSans-ExtraLight.ttf',
 'DejaVuSans-Oblique.ttf',
 'DejaVuSans.ttf',
 'DejaVuSansCondensed-Bold.ttf',
 'DejaVuSansCondensed-BoldOblique.ttf',
 'DejaVuSansCondensed-Oblique.ttf',
 'DejaVuSansCondensed.ttf',
 'DejaVuSansMono-Bold.ttf',
 'DejaVuSansMono-BoldOblique.ttf',
 'DejaVuSansMono-Oblique.ttf',
 'DejaVuSansMono.ttf',
 'DejaVuSerif-Bold.ttf',
 'DejaVuSerif-BoldItalic.ttf',
 'DejaVuSerif-Italic.ttf',
 'DejaVuSerif.ttf',
 'DejaVuSerifCondensed-Bold.ttf',
 'DejaVuSerifCondensed-BoldItalic.ttf',
 'DejaVuSerifCondensed-Italic.ttf',
 'DejaVuSerifCondensed.ttf',
 'Lato-Black.ttf',
 'Lato-BlackItalic.ttf',
 'Lato-Bold.ttf',
 'Lato-BoldItalic.ttf',
 'Lato-Hairline.ttf',
 'Lato-HairlineItalic.ttf',
 'Lato-Heavy.ttf',
 'Lato-HeavyItalic.ttf',
 'Lato-Italic.ttf',
 'Lato-Light.ttf',
 'Lato-LightItalic.ttf',
 'Lato-Medium.ttf',
 'Lato-MediumItalic.ttf',
 'Lato-Regular.ttf',
 'Lato-Semibold.ttf',
 'Lato-SemiboldItalic.ttf',
 'Lato-Thin.ttf',
 'Lato-ThinItalic.ttf',
 'LiberationMono-Bold.ttf',
 'LiberationMono-BoldItalic.ttf',
 'LiberationMono-Italic.ttf',
 'LiberationMono-Regular.ttf',
 'LiberationSans-Bold.ttf',
 'LiberationSans-BoldItalic.ttf',
 'LiberationSans-Italic.ttf',
 'LiberationSans-Regular.ttf',
 'LiberationSansNarrow-Bold.ttf',
 'LiberationSansNarrow-BoldItalic.ttf',
 'LiberationSansNarrow-Italic.ttf',
 'LiberationSansNarrow-Regular.ttf',
 'LiberationSerif-Bold.ttf',
 'LiberationSerif-BoldItalic.ttf',
 'LiberationSerif-Italic.ttf',
 'LiberationSerif-Regular.ttf',
 'NotoColorEmoji.ttf']

In [12]:

geemap.add_text_to_gif(
    in_gif,
    out_gif,
    xy=('5%', '5%'),
    text_sequence=1984,
    font_size=30,
    font_color='#0000ff',
    duration=100,
)
geemap.add_text_to_gif(
    out_gif,
    out_gif,
    xy=('30%', '85%'),
    text_sequence="Las Vegas",
    font_type="timesbd.ttf",
    font_size=30,
    font_color='black',
)
geemap.show_image(out_gif)

geemap.add_text_to_gif( in_gif, out_gif, xy=('5%', '5%'), text_sequence=1984, font_size=30, font_color='#0000ff', duration=100, ) geemap.add_text_to_gif( out_gif, out_gif, xy=('30%', '85%'), text_sequence="Las Vegas", font_type="timesbd.ttf", font_size=30, font_color='black', ) geemap.show_image(out_gif)

The input gif file does not exist.
The input gif file does not exist.

Create GIF from Earth Engine data¶

This example was adapted from the Earth Engine JavaScript API Documentation here.

Prepare for an ImageCollection¶

In [13]:

import ee
import geemap

ee.Initialize()

# Define an area of interest geometry with a global non-polar extent.
aoi = ee.Geometry.Polygon(
    [[[-179.0, 78.0], [-179.0, -58.0], [179.0, -58.0], [179.0, 78.0]]], None, False
)

# Import hourly predicted temperature image collection for northern winter
# solstice. Note that predictions extend for 384 hours; limit the collection
# to the first 24 hours.
tempCol = (
    ee.ImageCollection('NOAA/GFS0P25')
    .filterDate('2018-12-22', '2018-12-23')
    .limit(24)
    .select('temperature_2m_above_ground')
)

# Define arguments for animation function parameters.
videoArgs = {
    'dimensions': 768,
    'region': aoi,
    'framesPerSecond': 10,
    'crs': 'EPSG:3857',
    'min': -40.0,
    'max': 35.0,
    'palette': ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'],
}

import ee import geemap ee.Initialize() # Define an area of interest geometry with a global non-polar extent. aoi = ee.Geometry.Polygon( [[[-179.0, 78.0], [-179.0, -58.0], [179.0, -58.0], [179.0, 78.0]]], None, False ) # Import hourly predicted temperature image collection for northern winter # solstice. Note that predictions extend for 384 hours; limit the collection # to the first 24 hours. tempCol = ( ee.ImageCollection('NOAA/GFS0P25') .filterDate('2018-12-22', '2018-12-23') .limit(24) .select('temperature_2m_above_ground') ) # Define arguments for animation function parameters. videoArgs = { 'dimensions': 768, 'region': aoi, 'framesPerSecond': 10, 'crs': 'EPSG:3857', 'min': -40.0, 'max': 35.0, 'palette': ['blue', 'purple', 'cyan', 'green', 'yellow', 'red'], }

Save the GIF to local drive¶

In [14]:

saved_gif = os.path.join(os.path.expanduser('~'), 'Downloads/temperature.gif')
geemap.download_ee_video(tempCol, videoArgs, saved_gif)

saved_gif = os.path.join(os.path.expanduser('~'), 'Downloads/temperature.gif') geemap.download_ee_video(tempCol, videoArgs, saved_gif)

Generating URL...
Downloading GIF image from https://earthengine.googleapis.com/v1alpha/projects/earthengine-legacy/videoThumbnails/af4c277fc1c3ccfdd895de617899e84e-feb0e16697a9e08f1d4442592ef0bb9c:getPixels
Please wait ...
The GIF image has been saved to: /home/runner/Downloads/temperature.gif

In [15]:

geemap.show_image(saved_gif)

geemap.show_image(saved_gif)

Generate an hourly text sequence¶

In [16]:

text = [str(n).zfill(2) + ":00" for n in range(0, 24)]
print(text)

text = [str(n).zfill(2) + ":00" for n in range(0, 24)] print(text)

['00:00', '01:00', '02:00', '03:00', '04:00', '05:00', '06:00', '07:00', '08:00', '09:00', '10:00', '11:00', '12:00', '13:00', '14:00', '15:00', '16:00', '17:00', '18:00', '19:00', '20:00', '21:00', '22:00', '23:00']

Add text to GIF¶

In [17]:

out_gif = os.path.join(os.path.expanduser('~'), 'Downloads/output2.gif')

out_gif = os.path.join(os.path.expanduser('~'), 'Downloads/output2.gif')

In [18]:

geemap.add_text_to_gif(
    saved_gif,
    out_gif,
    xy=('3%', '5%'),
    text_sequence=text,
    font_size=30,
    font_color='#ffffff',
)

geemap.add_text_to_gif( saved_gif, out_gif, xy=('3%', '5%'), text_sequence=text, font_size=30, font_color='#ffffff', )

In [19]:

geemap.add_text_to_gif(
    out_gif,
    out_gif,
    xy=('32%', '92%'),
    text_sequence='NOAA GFS Hourly Temperature',
    font_color='white',
)

geemap.add_text_to_gif( out_gif, out_gif, xy=('32%', '92%'), text_sequence='NOAA GFS Hourly Temperature', font_color='white', )

In [20]:

geemap.show_image(out_gif)

geemap.show_image(out_gif)

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Last update: 2022-03-14