Plot cerebro in a non-blocking way

Rubén Briones

There is any way to plot cerebro in a non-blocking way? Nowadays, when I run cerebro.plot() the main thred get blocked until y close the chart manually.
Or maybe, there is any way to save to a file the cerebro.plot() chart without showing it?
Thanks!

Robin Dhillon

Hello @Rubén-Briones, if you are just trying to save the chart, here's the code:

    def saveplots(cerebro, numfigs=1, iplot=True, start=None, end=None,
             width=16, height=9, dpi=300, tight=True, use=None, file_path = '', **kwargs):

        from backtrader import plot
        if cerebro.p.oldsync:
            plotter = plot.Plot_OldSync(**kwargs)
        else:
            plotter = plot.Plot(**kwargs)

        figs = []
        for stratlist in cerebro.runstrats:
            for si, strat in enumerate(stratlist):
                rfig = plotter.plot(strat, figid=si * 100,
                                    numfigs=numfigs, iplot=iplot,
                                    start=start, end=end, use=use)
                figs.append(rfig)

            # this blocks code execution
            # plotter.show()

        for fig in figs:
            for f in fig:
                f.savefig(file_path, bbox_inches='tight')
        return figs

        cerebro.plot(style = 'candlestick')

    saveplots(cerebro,file_path = 'savefig.png')