jinja-plot-helper-code.py

def make_scale(dmin,dmax,rmin,rmax):
    dwidth = dmax - dmin
    rwidth = rmax - rmin
    map_ = rwidth / dwidth
    def scale(n):
        return (n - dmin) * map_ + rmin
    return scale
    
xscale = make_scale(
    layout['data']['time_min'],
    layout['data']['time_max'],
    layout['plot']['xmin'],
    layout['plot']['xmax']
)
yscale = make_scale(
    layout['data']['price_min'],
    layout['data']['price_max'],
    layout['plot']['ymax'],
    layout['plot']['ymin']
)

timerange = range(
    layout['data']['time_min'],
    layout['data']['time_max']+1
)
xticks = [{"text":f"{i}:00","pos":xscale(i)} for i in timerange]

pricerange = range(
    layout['data']['price_min'],
    layout['data']['price_max']+1
)
yticks = [{"text":f"${i}","pos":yscale(i)} for i in pricerange]