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Vincent in QtWidgets applications

Project description

The folks at Trifacta are making it easy to build visualizations on top of D3 with Vega. Vincent makes it easy to build Vega with Python. Vincent-Qt makes it easy to use Vincent in QtWidgets applications.


$ pip3 install vincent_qt


Create QWebView object, plot something with Vincent then call function display:

import vincent_qt
web_view = QWebView()
plot = vincent.Line(data)
vincent_qt.display(web_view, plot)


Internet connection

You need to have internet connection at least for the first run of application. Vincent-Qt uses JS scripts from the interne to plot. By default it caches them in user cache dir (or in .vega-cache dir inside your application dir if appdirs package isn’t installed).


This library is web-based, so when you display new plot on QWebView widget, it loads web page. Because of that firstly it clears it’s content, then it displays your plot. That process causes blinking. It’s probably OK when you plot occasionally, but it’s disgusting in realtime plotting. If you use PyQt4 or PySide you can try PyQtGraph.

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