尝试使用Matplotlib在条形图上绘制线图

时间:2015-09-09 08:19:01

标签: python matplotlib plot

我试图使用MatPlotLib在条形图上绘制线图。到目前为止,我已经显示了两个图,但我无法获得具有不同比例的辅助y轴。当我尝试在其中放入另一个时,会覆盖原始比例。我的代码在

之下
def hridef_base(x):
if x == 1:

    deltatlapexit = ExitSummary['Avg tLap'] - ExitSummary2['Avg tLap']

    plt.figure()
    index = (EntrySummary.index + 1)
    barwidth = 0.2

    plt.ylim(0.0, 65.0)
    plt.bar(index-barwidth, EntrySummary['Avg FRH'], barwidth, color='r', yerr=EntrySummary['FRH StDev'], ecolor='k', label='Entry')
    plt.bar(index, ApexSummary['Avg FRH'], barwidth, color='#4169E1', yerr=ApexSummary['FRH StDev'], ecolor='k', label='Apex')
    plt.bar(index+barwidth, ExitSummary['Avg FRH'], barwidth, color='#32CD32', yerr=ExitSummary['FRH StDev'], ecolor='k', label='Exit')

    plt.plot(index, deltatlapexit, color='k', label='Entry')

    plt.xlabel('Turn Number')
    plt.ylabel('Average FRideH')
    plt.title('Average FRideH for Baseline setup')
    plt.xticks(index)
    plt.legend()

else:
    print "Baseline FRideH Not Selected"

对此问题的任何建议表示赞赏,但请告诉我该做什么而不是发布网站链接。我需要理解为什么我无法做到这一点。

提前谢谢你。如果我错过了什么,请评论。

更新

由于下面的评论,图表现在有两个独立的y轴。条形数据的y标签如何跳到右边,如果我尝试绘制y-label线,我会得到一个属性错误。

def hridef_base(x):
if x == 1:

    deltatlapexit = ExitSummary['Avg tLap'] - ExitSummary2['Avg tLap']

    fig, axis1 = subplots()
    index = (EntrySummary.index + 1)
    barwidth = 0.2

    axis1.ylim(0.0, 65.0)
    axis1.bar(index-barwidth, EntrySummary['Avg FRH'], barwidth, color='r', yerr=EntrySummary['FRH StDev'], ecolor='k', label='Entry')
    axis1.bar(index, ApexSummary['Avg FRH'], barwidth, color='#4169E1', yerr=ApexSummary['FRH StDev'], ecolor='k', label='Apex')
    axis1.bar(index+barwidth, ExitSummary['Avg FRH'], barwidth, color='#32CD32', yerr=ExitSummary['FRH StDev'], ecolor='k', label='Exit')

    axis2 = axis1.twinx()
    axis2.set_ylim(-10.0, 10.0)
    axis2.plot(index, deltatlapexit, color='k', label='tDelta')

    axis1.xlabel('Turn Number')
    axis1.ylabel('Average FRideH')
    axis2.set_ylabel('tDelta')
    axis1.title('Average FRideH for Baseline setup')
    axis1.xticks(index)
    axis1.legend()
    axis2.legend()

else:
    print "Baseline FRideH Not Selected"

我会插入图片,但我需要10个代表点......

我收到的错误是:     NameError:全局名称'子图'未定义

2 个答案:

答案 0 :(得分:6)

我没有您的数据,但使用matplotlib中的barplot example,这是一个带条形图和线图的示例,带有独立缩放的y轴:

从matplotlib导入pyplot作为plt 导入numpy为np

plt.figure()          
N = 5
menMeans = (20, 35, 30, 35, 27)
menStd = (2, 3, 4, 1, 2)
width = 0.35       # the width of the bars
womenMeans = (25, 32, 34, 20, 25)
womenStd = (3, 5, 2, 3, 3)    
ind = np.arange(N)
plt.ylim(0.0, 65.0)
plt.bar(ind, menMeans, width, color='r', yerr=menStd, label='Men means')
plt.bar(ind+width, womenMeans, width, color='y', yerr=womenStd, label='Women means')
plt.ylabel('Bar plot')      

x = np.linspace(0, N)
y = np.sin(x)
axes2 = plt.twinx()
axes2.plot(x, y, color='k', label='Sine')
axes2.set_ylim(-1, 1)
axes2.set_ylabel('Line plot')

plt.show()

enter image description here

答案 1 :(得分:0)

作为基于this

所需内容的最小示例
import numpy as np
import matplotlib.pyplot as plt

#Setup dummy data
N = 10
ind = np.arange(N)
bars = np.random.randn(N)
t = np.arange(0.01, 10.0, 0.01)

#Plot graph with 2 y axes
fig, ax1 = plt.subplots()

#Plot bars
ax1.bar(ind, bars, alpha=0.3)
ax1.set_xlabel('$x$')

# Make the y-axis label and tick labels match the line color.
ax1.set_ylabel('bar', color='b')
[tl.set_color('b') for tl in ax1.get_yticklabels()]

#Set up ax2 to be the second y axis with x shared
ax2 = ax1.twinx()
#Plot a line
ax2.plot(t, np.sin(0.25*np.pi*t), 'r-')

# Make the y-axis label and tick labels match the line color.
ax2.set_ylabel('sin', color='r')
[tl.set_color('r') for tl in ax2.get_yticklabels()]

plt.show()

给出, enter image description here