Rendering Charts to File Formats¶

Render a chart to SVG, PNG, or JPG bytes using chart.render(fmt).

In [1]:

from mplchart.chart import Chart
from mplchart.samples import sample_prices
from mplchart.primitives import Candlesticks, Volume, Pane, LinePlot
from mplchart.indicators import SMA, RSI, MACD

from matplotlib_inline.backend_inline import set_matplotlib_formats

set_matplotlib_formats("svg")

from mplchart.chart import Chart from mplchart.samples import sample_prices from mplchart.primitives import Candlesticks, Volume, Pane, LinePlot from mplchart.indicators import SMA, RSI, MACD from matplotlib_inline.backend_inline import set_matplotlib_formats set_matplotlib_formats("svg")

In [2]:

prices = sample_prices()
prices

prices = sample_prices() prices

Out[2]:

	open	high	low	close	volume
date
1980-12-12	0.098389	0.098817	0.098389	0.098389	469033600
1980-12-15	0.093684	0.093684	0.093256	0.093256	175884800
1980-12-16	0.086839	0.086839	0.086412	0.086412	105728000
1980-12-17	0.088550	0.088978	0.088550	0.088550	86441600
1980-12-18	0.091118	0.091545	0.091118	0.091118	73449600
...	...	...	...	...	...
2025-11-11	269.809998	275.910004	269.799988	275.250000	46208300
2025-11-12	275.000000	275.730011	271.700012	273.470001	48398000
2025-11-13	274.109985	276.700012	272.089996	272.950012	49602800
2025-11-14	271.049988	275.959991	269.600006	272.410004	47399300
2025-11-17	268.815002	270.489990	265.730011	267.459991	42862157

11325 rows × 5 columns

In [3]:

max_bars = 250

chart = Chart(prices, title="Example", max_bars=max_bars).plot(
    Candlesticks(use_bars=False),
    SMA(50),
    SMA(200),
    Volume(),
    Pane("above", yticks=(30, 50, 70)),
    LinePlot(RSI(), overbought=70, oversold=30),
    Pane("below"),
    MACD(),
)

max_bars = 250 chart = Chart(prices, title="Example", max_bars=max_bars).plot( Candlesticks(use_bars=False), SMA(50), SMA(200), Volume(), Pane("above", yticks=(30, 50, 70)), LinePlot(RSI(), overbought=70, oversold=30), Pane("below"), MACD(), )

In [4]:

data = chart.render("svg")

print(data[:20] + b"...")

data = chart.render("svg") print(data[:20] + b"...")

b'<?xml version="1.0" ...'

In [5]:

data = chart.render("png")

print(data[:20] + b"...")

data = chart.render("png") print(data[:20] + b"...")

b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x04\xb0...'

In [ ]: