eomaps 4.0

A library to create interactive maps of geographical datasets.

           

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A library to create interactive maps of geographical datasets.

• 🌍 EOmaps provides a simple and intuitive interface to visualize and interact with geographical datasets
• ⬥ Data can be provided as 1D or 2D lists, numpy-arrays, pandas.DataFrames
•       or directly from GeoTIFFs, NetCDFs and csv-files.
•       ... usable also for large datasets with millions of datapoints!
• ⬥ WebMap layers, annotations, markers can be added with a single line of code
• ⬥ EOmaps is built on top of matplotlib and cartopy and integrates well pandas and geopandas
• 🌎 Quickly turn your maps into powerful interactive data-analysis widgets
• ⬥ use callback functions to interact with the data (or an underlying database)
• ⬥ compare multiple data-layers, WebMaps etc.

🌲🌳 Checkout the documentation for more details and examples 🌳🌲

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❗ update notice ❗

There are breaking API changes between EOmaps v3.x and EOmaps v4.0
To quickly update existing scripts, see: ⚙ Port script from EOmaps v3.x to v4.x

[click to show] a quick summary of the API changes

• the following properties and functions have been removed:

  • ❌ m.plot_specs.

  • ❌ m.set_plot_specs()

  • Arguments are now directly passed to relevant functions:

    m = Maps
    # m.set_plot_specs(cmap=..., vmin=..., vmax=..., cpos=..., cpos_radius=..., histbins=...)
    # m.plot_specs.<  > = ...
    m.set_data(..., cpos=..., cpos_radius=...)
    m.plot_map(cmap=..., vmin=..., vmax=...)
    m.add_colorbar(histbins=...)
    

• 🔶 m.set_shape.voroni_diagram is renamed to m.set_shape.voronoi_diagram

• 🔷 custom callbacks are no longer bound to the Maps-object

  • the call-signature of custom callbacks has changed to:
    def cb(self, *args, **kwargs) >> def cb(*args, **kwargs)

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🔨 Installation

To install EOmaps (and all its dependencies) via the conda package-manager, simply use:

conda install -c conda-forge eomaps

For more information, have a look at the installation instructions in the documentation!

✔️ Citation

Did EOmaps help in your research?
Consider supporting the development and add a citation to your publication!

🚀 Contribute

Found a bug or got an idea for an interesting feature?
Open an issue or start a discussion and I'll see what I can do!
(I'm of course also happy about actual pull requests on features and bug-fixes!)

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🌳 Basic usage

🛸 Checkout the documentation! 🛸

• A list of coordinates and values is all you need as input!
  • plots of large (>1M datapoints) irregularly sampled datasets are generated in a few seconds!
• Represent your data
  • as shapes with actual geographic dimensions (ellipses, rectangles, geodetic circles)
  • via Voroni diagrams and Delaunay triangulations to get interpolated contour-plots
  • via dynamic data-shading to speed up plots of extremely large datasets
• Re-project the data to any crs supported by cartopy
• Quickly add features and additional layers to the plot
  • Markers, Annotations, WebMap Layers, NaturalEarth features, Scalebars, Compasses (or North-arrows) etc.
• Interact with the data via callback-functions.

import pandas as pd
from eomaps import Maps

# the data you want to plot
lon, lat, data = [1,2,3,4,5], [1,2,3,4,5], [1,2,3,4,5]

# initialize Maps object
m = Maps(crs=Maps.CRS.Orthographic())

# set the data
m.set_data(data=data, x=lon, y=lat, crs=4326)
# set the shape you want to use to represent the data-points
m.set_shape.geod_circles(radius=10000) # (e.g. geodetic circles with 10km radius)

# (optionally) classify the data
m.set_classify_specs(scheme=Maps.CLASSIFIERS.Quantiles, k=5)

# plot the map using matplotlibs "viridis" colormap
m.plot_map(cmap="viridis", vmin=2, vmax=4)

# add a colorbar with a histogram on top
m.add_colorbar(histbins=200)

# add a scalebar
m.add_scalebar()

# add a compass (or north-arrow)
m.add_compass()

# add some basic features from NaturalEarth
m.add_feature.preset.coastline()

# add WebMap services
m.add_wms.OpenStreetMap.add_layer.default()

# use callback functions make the plot interactive!
m.cb.pick.attach.annotate()

# ----- use multiple layers to compare and analyze different datasets!
# ---- add another plot-layer to the map
m3 = m.new_layer(layer="layer 2")
m3.add_feature.preset.ocean()

# peek on layer 1 if you click on the map
m.cb.click.attach.peek_layer(layer="layer 2", how=0.4)
# switch between the layers if you press "0" or "1" on the keyboard
m.cb.keypress.attach.switch_layer(layer=0, key="0")
m.cb.keypress.attach.switch_layer(layer="layer 2", key="1")

# get a clickable widget to switch between the available plot-layers
m.util.layer_selector()

# ---- add new layers directly from GeoTIFF / NetCDF or CSV files
m4 = m.new_layer_from_file.GeoTIFF(...)
m4 = m.new_layer_from_file.NetCDF(...)
m4 = m.new_layer_from_file.CSV(...)

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🌼 Thanks to

• Jakob Quast for designing the nice logo!