Ability to accept input from Charts, Tables, etc.

[tvst]

What if every output element could also serve as an input widget?

Then you could do things like:

• User clicks on chart datapoint → python script receives the value for that data point and does something with it
• User zooms into a chart → python script receives the new zoom bounds and does something with it
• User clicks on dataframe rows → python script receives row index and does something with it
• User click on two points on an image → python script draws a rectangle touching those points
• User edits a row on a dataframe → python script receives the new dataframe

Related discussions:

• https://discuss.streamlit.io/t/hover-and-click-events/586
• https://discuss.streamlit.io/t/setting-data-from-javascript/965/2

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[MarcSkovMadsen]

Eventually you will be building that kind of functionality (is my guess). Very much needed to provide awesome interactivity. :-)

[markopy]

Other issues that depend on having this kind of functionality: #298 #271

[tvst]

Another one: ability to get the time from an audio widget. See forum thread here.

[treuille]

If you want to select rows in a table, you can use this somewhat inelegant workaround, which will scale up to about 1000 rows or so. 👍

[MarcSkovMadsen]

Here is just my few cents.

If we supported the ipywidgets then we would also get access to the awesome qgrid/ slickgrid.

That grid is really great to read, sort and filter. And it's fast. But I guess the looks of it is not very Streamlit like.

[MarcSkovMadsen]

You can see plotly's new FigureWidget in action here and how it plays well with the ipywidgets and supports call backs.

https://plot.ly/python/figurewidget/
https://plot.ly/python/figurewidget-app/

[rmitsch]

That would be a great feature, since it might allow to support brushing & linking between charts in streamlit apps. For reference, dc.js is a cool JS chart framework that focuses on getting exactly this kind of interaction/dependency between multiple charts right (example). That kind of functionality would be awesome in streamlit.

[torwag]

Esp. Tables as inputs or resp. changeable, like a spreadsheet, would allow using streamlit.io as a replacement for a lot of excel-file based solutions, which are floating around in the millions in cooperate settings.
Streamlit.io would enable a programmer to really get the logic right, access databases, transfer data, have sanity checks, etc. using pandas resp. python in a single file, but still allows everyone to contribute or change data of that "online-spreadsheet"-system.

[treuille]

@torwag : I think this is a super valid use case. Can you please tell me a bit more about the setup you envision. Would you want only a single "spreadsheet" (i.e. table), or would you want graphs etc? Do you want widgets / sidebar? Also, what industry are you working in? Thanks!

[torwag]

@treuille My vision would be to have all possibilities, like graphs, buttons, sliders etc. but also have editable tables, thus people can contribute data to it. Possibilities are endless.
From inventory where people type in the stock amount to annotation of medical data.

I am in an university setting, and here we would have both academic and administrative use for such a solution. E.g. staff and lecture dashboards to show all kind of information on a single page. But enable the user to make inputs where necessary.

[hcoohb]

I would love also to have the output from a selection on a graph.
Plotly allows to select certain points, and I wish I could use this as a input for some other graphs displaying more details...