所以现在，我正试图将错误栏添加到现有的图表中，但在运行代码时，我仍会遇到一些错误。下面是我添加的内容被注释掉时的代码(没有错误条)。从中提取信息的文件包含4列，其中第4列是垂直错误。当我运行包含注释行的代码时，会得到以下错误Traceback (most recent call last):
File “39.py”, line 37, in
plot_graph()
File “39.py”, line 29, in plot_graph
plt.errorbar(x1,y1, yerr = z1, marker = ‘none’, linestyle = ‘none’)
File “/Users/Bashe/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/matplotlib/pyplot.py”, line 2697, in errorbar
errorevery=errorevery, capthick=capthick, **kwargs)
File “/Users/Bashe/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/matplotlib/axes.py”, line 5758, in errorbar
in cbook.safezip(y, yerr)]
TypeError: unsupported operand type(s) for -: ‘str’ and ‘str’
这是我的密码。希望有人能告诉我是什么导致了这个问题。import os
import pylab as plt
def plot_graph():
file=’Graph.txt’
x = []
y = []
z = []
x1 = []
y1 = []
z1 = []
t = []
t1 = []
for dirpath,dirs,files in os.walk(‘/Users/Bashe/Desktop/121210 p2/’):
if file in files:
infile = open(os.path.join(dirpath, “Graph.txt”), “r”)
for columns in (raw.strip().split() for raw in infile):
t = columns[0]
x = columns[1]
y = columns[2]
z = columns[3]
x1.append(str(x))
y1.append(str(y))
z1.append(str(z))
t1.append(str(t))
savepath = os.path.join(dirpath, ‘Mean vs Temperature for %s.png’ %(t1[0]))
plt.plot(x1,y1, marker =’o’, linestyle = ‘–‘)
plt.errorbar(x1,y1, yerr = z1, marker = ‘none’, linestyle = ‘none’)
plt.xlabel(‘Temperature’)
plt.ylabel(‘Mean’)
plt.title(‘Mean vs Temperature for %s probe concentration’ %(t1[0]))
plt.savefig(savepath)
plt.show()
infile.close()
Original: https://blog.csdn.net/weixin_32667011/article/details/113643132
Author: malartinla
Title: python 画条形图加误差线_使用matplotlib向图形添加误差线
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