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2019-10-02: The community is currently in read-only mode

Plot cerebro in a non-blocking way



  • 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!



  • 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')
    

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