How do I report an issue or make a feature request¶
Please go to https://github.com/opengeos/leafmap/issues.
What's the difference between folium and ipyleaflet¶
A key difference between ipyleaflet and folium is that ipyleaflet is built upon ipywidgets and allows bidirectional communication between the front-end and the backend enabling the use of the map to capture user input, while folium is meant for displaying static data only (source). Note that Google Colab currently does not support ipyleaflet (source). Therefore, if you are using leafmap
with Google Colab,
import leafmap will automatically use the
folium plotting backend. If you are using leafmap with Jupyter installed locally,
import leafmap will automatically use the `ipyleaflet', which provides more functionalities for capturing user input (e.g., mouse-clicking and moving).
How to use a specific plotting backend¶
leafmap has three plotting backends: folium, ipyleaflet, and here-map-widget-for-jupyter. If you are using
leafmap with Jupyter installed locally,
import leafmap will use the
ipyleaflet plotting backend by default. If you are using
leafmap with Google Colab,
import leafmap will use the
folium plotting backend by default. Note that Google Colab does not yet support
ipyleaflet (source). Therefore, you won't be able to access the
leafmap toolbar in Colab. Note that the backends do not offer equal functionality. Some interactive functionality in
ipyleaflet might not be available in
heremap. To use a specific plotting backend, use one of the following:
import leafmap.leafmap as leafmap
import leafmap.foliumap as leafmap
import leafmap.heremap as leafmap
Why the interactive map does not show up¶
If the interactive map does not show up on Jupyter Notebook and JupyterLab, it is probably because the ipyleaflet extension is not installed properly.
For example, you might receive an error message saying
Error displaying widget: model not found. This a well-known issue related to ipyleaflet. See some relevant issues below.
- How to display map object using ipyleaflet in jupyter notebook or jupyter Lab
- ipyleaflet does not work in jupyter lab - "Error displaying widget: model not found"
- Error displaying widget: model not found
Try some of the options below to resolve the issue. If the issue persists after trying these steps, you can open an issue on the ipyleaflet repository.
For Jupyter notebook, try running the following two commands within your leafmap conda environment:
For JupyterLab, try running the following command within your leafmap conda environment:
Alternatively, you can run leafmap directly using binder:
How to use leafmap in countries where Google Services are blocked¶
If you are trying to use leafmap in countries where Google Services are blocked (e.g., China), you will need a VPN. Use
leafmap.set_proxy(port=your-port-number) to connect to Google servers. Otherwise, you might encounter a connection timeout issue.
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