如何用Python的pyecharts库绘制K线图

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01

K线图

一、概念

股市及期货市场中的K线图的画法包含四个数据，即开盘价、最高价、最低价、收盘价，所有的K线都是围绕这四个数据展开，反映大势的状况和价格信息。如果把每日的K线图放在一张纸上，就能得到日K线图，同样也可画出周K线图、月K线图。研究金融的小伙伴肯定比较熟悉这个，那么我们看起来比较复杂的K线图，又是这样画出来的，本文我们将一起探索K线图的魅力与神奇之处吧！

二、用处

K线图用处于股票分析，作为数据分析，以后的进入大数据肯定是一个趋势和热潮，K线图的专业知识，说实话肯定比较的复杂，这里就不做过多的展示了，有兴趣的小伙伴去问问百度小哥哥哟！

02

K线图系列模板

一、最简单的K线图绘制

第一个K线图绘制，来看看需要哪些参数吧，数据集都有四个必要的哟！

import pyecharts.options as opts from pyecharts.charts import Candlestick x_data = ["2017-10-24", "2017-10-25", "2017-10-26", "2017-10-27"] y_data = [[20, 30, 10, 35], [40, 35, 30, 55], [33, 38, 33, 40], [40, 40, 32, 42]] ( Candlestick(init_opts=opts.InitOpts(width="1200px", height="600px")) .add_xaxis(xaxis_data=x_data) .add_yaxis(series_name="", y_axis=y_data) .set_series_opts() .set_global_opts( yaxis_opts=opts.AxisOpts( splitline_opts=opts.SplitLineOpts( is_show=True, linestyle_opts=opts.LineStyleOpts(width=1) ) ) ) .render("简单K线图.html") )

二、K线图鼠标缩放

大量的数据集的时候，我们不可以全部同时展示，我们可以缩放来进行定向展示。

from pyecharts import options as opts from pyecharts.charts import Kline data = [ [2320.26, 2320.26, 2287.3, 2362.94], [2300, 2291.3, 2288.26, 2308.38], [2295.35, 2346.5, 2295.35, 2345.92], [2347.22, 2358.98, 2337.35, 2363.8], [2360.75, 2382.48, 2347.89, 2383.76], [2383.43, 2385.42, 2371.23, 2391.82], [2377.41, 2419.02, 2369.57, 2421.15], [2425.92, 2428.15, 2417.58, 2440.38], [2411, 2433.13, 2403.3, 2437.42], [2432.68, 2334.48, 2427.7, 2441.73], [2430.69, 2418.53, 2394.22, 2433.89], [2416.62, 2432.4, 2414.4, 2443.03], [2441.91, 2421.56, 2418.43, 2444.8], [2420.26, 2382.91, 2373.53, 2427.07], [2383.49, 2397.18, 2370.61, 2397.94], [2378.82, 2325.95, 2309.17, 2378.82], [2322.94, 2314.16, 2308.76, 2330.88], [2320.62, 2325.82, 2315.01, 2338.78], [2313.74, 2293.34, 2289.89, 2340.71], [2297.77, 2313.22, 2292.03, 2324.63], [2322.32, 2365.59, 2308.92, 2366.16], [2364.54, 2359.51, 2330.86, 2369.65], [2332.08, 2273.4, 2259.25, 2333.54], [2274.81, 2326.31, 2270.1, 2328.14], [2333.61, 2347.18, 2321.6, 2351.44], [2340.44, 2324.29, 2304.27, 2352.02], [2326.42, 2318.61, 2314.59, 2333.67], [2314.68, 2310.59, 2296.58, 2320.96], [2309.16, 2286.6, 2264.83, 2333.29], [2282.17, 2263.97, 2253.25, 2286.33], [2255.77, 2270.28, 2253.31, 2276.22], ] c = ( Kline() .add_xaxis(["2017/7/{}".format(i + 1) for i in range(31)]) .add_yaxis( "kline", data, itemstyle_opts=opts.ItemStyleOpts( color="#ec0000", color0="#00da3c", border_color="#8A0000", border_color0="#008F28", ), ) .set_global_opts( xaxis_opts=opts.AxisOpts(is_scale=True), yaxis_opts=opts.AxisOpts( is_scale=True, splitarea_opts=opts.SplitAreaOpts( is_show=True, areastyle_opts=opts.AreaStyleOpts(opacity=1) ), ), datazoom_opts=[opts.DataZoomOpts(type_="inside")], title_opts=opts.TitleOpts(title="Kline-ItemStyle"), ) .render("K线图鼠标缩放.html") )

三、有刻度标签的K线图

我们知道一个数据节点，但是我们不能在图像里面一眼看出有哪些数据量超出了它的范围，刻度标签就可以派上用场了。

from pyecharts import options as opts from pyecharts.charts import Kline data = [ [2320.26, 2320.26, 2287.3, 2362.94], [2300, 2291.3, 2288.26, 2308.38], [2295.35, 2346.5, 2295.35, 2345.92], [2347.22, 2358.98, 2337.35, 2363.8], [2360.75, 2382.48, 2347.89, 2383.76], [2383.43, 2385.42, 2371.23, 2391.82], [2377.41, 2419.02, 2369.57, 2421.15], [2425.92, 2428.15, 2417.58, 2440.38], [2411, 2433.13, 2403.3, 2437.42], [2432.68, 2334.48, 2427.7, 2441.73], [2430.69, 2418.53, 2394.22, 2433.89], [2416.62, 2432.4, 2414.4, 2443.03], [2441.91, 2421.56, 2418.43, 2444.8], [2420.26, 2382.91, 2373.53, 2427.07], [2383.49, 2397.18, 2370.61, 2397.94], [2378.82, 2325.95, 2309.17, 2378.82], [2322.94, 2314.16, 2308.76, 2330.88], [2320.62, 2325.82, 2315.01, 2338.78], [2313.74, 2293.34, 2289.89, 2340.71], [2297.77, 2313.22, 2292.03, 2324.63], [2322.32, 2365.59, 2308.92, 2366.16], [2364.54, 2359.51, 2330.86, 2369.65], [2332.08, 2273.4, 2259.25, 2333.54], [2274.81, 2326.31, 2270.1, 2328.14], [2333.61, 2347.18, 2321.6, 2351.44], [2340.44, 2324.29, 2304.27, 2352.02], [2326.42, 2318.61, 2314.59, 2333.67], [2314.68, 2310.59, 2296.58, 2320.96], [2309.16, 2286.6, 2264.83, 2333.29], [2282.17, 2263.97, 2253.25, 2286.33], [2255.77, 2270.28, 2253.31, 2276.22], ] c = ( Kline() .add_xaxis(["2017/7/{}".format(i + 1) for i in range(31)]) .add_yaxis( "kline", data, markline_opts=opts.MarkLineOpts( data=[opts.MarkLineItem(type_="max", value_dim="close")] ), ) .set_global_opts( xaxis_opts=opts.AxisOpts(is_scale=True), yaxis_opts=opts.AxisOpts( is_scale=True, splitarea_opts=opts.SplitAreaOpts( is_show=True, areastyle_opts=opts.AreaStyleOpts(opacity=1) ), ), title_opts=opts.TitleOpts(title="标题"), ) .render("刻度标签.html") )

四、K线图鼠标无缩放

前面的是一个有缩放功能的图例代码，但是有时候我们不想要那么修改一下参数就可以了。

from pyecharts import options as opts from pyecharts.charts import Kline data = [ [2320.26, 2320.26, 2287.3, 2362.94], [2300, 2291.3, 2288.26, 2308.38], [2295.35, 2346.5, 2295.35, 2345.92], [2347.22, 2358.98, 2337.35, 2363.8], [2360.75, 2382.48, 2347.89, 2383.76], [2383.43, 2385.42, 2371.23, 2391.82], [2377.41, 2419.02, 2369.57, 2421.15], [2425.92, 2428.15, 2417.58, 2440.38], [2411, 2433.13, 2403.3, 2437.42], [2432.68, 2334.48, 2427.7, 2441.73], [2430.69, 2418.53, 2394.22, 2433.89], [2416.62, 2432.4, 2414.4, 2443.03], [2441.91, 2421.56, 2418.43, 2444.8], [2420.26, 2382.91, 2373.53, 2427.07], [2383.49, 2397.18, 2370.61, 2397.94], [2378.82, 2325.95, 2309.17, 2378.82], [2322.94, 2314.16, 2308.76, 2330.88], [2320.62, 2325.82, 2315.01, 2338.78], [2313.74, 2293.34, 2289.89, 2340.71], [2297.77, 2313.22, 2292.03, 2324.63], [2322.32, 2365.59, 2308.92, 2366.16], [2364.54, 2359.51, 2330.86, 2369.65], [2332.08, 2273.4, 2259.25, 2333.54], [2274.81, 2326.31, 2270.1, 2328.14], [2333.61, 2347.18, 2321.6, 2351.44], [2340.44, 2324.29, 2304.27, 2352.02], [2326.42, 2318.61, 2314.59, 2333.67], [2314.68, 2310.59, 2296.58, 2320.96], [2309.16, 2286.6, 2264.83, 2333.29], [2282.17, 2263.97, 2253.25, 2286.33], [2255.77, 2270.28, 2253.31, 2276.22], ] c = ( Kline() .add_xaxis(["2017/7/{}".format(i + 1) for i in range(31)]) .add_yaxis("kline", data) .set_global_opts( yaxis_opts=opts.AxisOpts(is_scale=True), xaxis_opts=opts.AxisOpts(is_scale=True), title_opts=opts.TitleOpts(title="Kline-基本示例"), ) .render("鼠标无缩放.html") )

五、大量数据K线图绘制（X轴鼠标可移动）

虽然有时候缩放可以容纳较多的数据量，但是还是不够智能，可以利用这个：

from pyecharts import options as opts from pyecharts.charts import Kline data = [ [2320.26, 2320.26, 2287.3, 2362.94], [2300, 2291.3, 2288.26, 2308.38], [2295.35, 2346.5, 2295.35, 2345.92], [2347.22, 2358.98, 2337.35, 2363.8], [2360.75, 2382.48, 2347.89, 2383.76], [2383.43, 2385.42, 2371.23, 2391.82], [2377.41, 2419.02, 2369.57, 2421.15], [2425.92, 2428.15, 2417.58, 2440.38], [2411, 2433.13, 2403.3, 2437.42], [2432.68, 2334.48, 2427.7, 2441.73], [2430.69, 2418.53, 2394.22, 2433.89], [2416.62, 2432.4, 2414.4, 2443.03], [2441.91, 2421.56, 2418.43, 2444.8], [2420.26, 2382.91, 2373.53, 2427.07], [2383.49, 2397.18, 2370.61, 2397.94], [2378.82, 2325.95, 2309.17, 2378.82], [2322.94, 2314.16, 2308.76, 2330.88], [2320.62, 2325.82, 2315.01, 2338.78], [2313.74, 2293.34, 2289.89, 2340.71], [2297.77, 2313.22, 2292.03, 2324.63], [2322.32, 2365.59, 2308.92, 2366.16], [2364.54, 2359.51, 2330.86, 2369.65], [2332.08, 2273.4, 2259.25, 2333.54], [2274.81, 2326.31, 2270.1, 2328.14], [2333.61, 2347.18, 2321.6, 2351.44], [2340.44, 2324.29, 2304.27, 2352.02], [2326.42, 2318.61, 2314.59, 2333.67], [2314.68, 2310.59, 2296.58, 2320.96], [2309.16, 2286.6, 2264.83, 2333.29], [2282.17, 2263.97, 2253.25, 2286.33], [2255.77, 2270.28, 2253.31, 2276.22], ] c = ( Kline() .add_xaxis(["2017/7/{}".format(i + 1) for i in range(31)]) .add_yaxis("kline", data) .set_global_opts( xaxis_opts=opts.AxisOpts(is_scale=True), yaxis_opts=opts.AxisOpts( is_scale=True, splitarea_opts=opts.SplitAreaOpts( is_show=True, areastyle_opts=opts.AreaStyleOpts(opacity=1) ), ), datazoom_opts=[opts.DataZoomOpts(pos_bottom="-2%")], title_opts=opts.TitleOpts(title="Kline-DataZoom-slider-Position"), ) .render("大量数据展示.html") )