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voila-dashboards / voila

Voilà turns Jupyter notebooks into standalone web applications
https://voila.readthedocs.io
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Input and output of data while running voila #570

Open toltoxgh opened 4 years ago

toltoxgh commented 4 years ago

Is there a way in voila to have a data input field or an upload button to upload a data file (csv, json, ...)? Similarly, is there a way to provide a download of processed data (csv, json, ...)?

Voila seems really useful from what I have seen so far. But for some scientific applications, it makes sense to have a user go to voila in a browser, then upload or input some data, voila then renders the various visualizations of the input, then applies some back-end models, and also gives an output option in the browser to download the model predictions for the inputs.

Is this currently possible with voila?

Alexboiboi commented 4 years ago

Hi, Voilà basically renders a Jupyter notebook. You can use the ipywidgets library which has a FileUpload widget

The Panel library also has an equivalent FileInput widget and even a FileSelector widget

hope this helps :) Alex-

jtpio commented 4 years ago

Thanks @Alexboiboi for the answer!

@toliwa did you get a chance to try the FileUpload widget?

toltoxgh commented 4 years ago

Thanks @Alexboiboi I followed the example at FileUpload widget and opened the notebook with voila, and uploader.value displays {}, even after I use the FileUpload and select a file.

Would it be possible to provide a minimal notebook that can be used in voila that has a basic file input and file download/output option?

Thanks!

jtpio commented 4 years ago

@toliwa the gpx-viewer example in the Voila Gallery uses the FileUpload widget.