读取excel文件并绘制图表[Python]

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import matplotlib.pyplot as plt

import numpy as np

import xlrd

import os

from StringIO import StringIO

if __name__ == '__main__':

data = xlrd.open_workbook('D:\\tt.xls')

plt.figure(figsize=(8,4))

plt.xlabel(u'second')

plt.ylabel(u'xxx')

x_index=1

data.sheet_names()

table = data.sheets()[0]

table = data.sheet_by_index(0)

table = data.sheet_by_name(u'Sheet1')

print("Good")

COLOR_INDEX=1

INDEX_NAME=''

## init data

nrows = table.nrows

ncols = table.ncols

print("nr=%d nc=%d \n"%(nrows,ncols))

'''

for rownum in range(table.nrows):

value = table.cell(rownum,2).value

if rownum == 0:

print("")

else:

try:

value_int = int(value)

x.append(x_index)

y.append(value_int)

# line = ax.plot(x_index,value_int,label="xx ",color="red",linewidth=2)

#plt.plot(x_index,value_int,label="xx ",color="red",linewidth=2)

print("index=%d"%x_index)

#plt.plot_date(x_index,value_int)

x_index=x_index+1

except:

print("error")

plt.plot(x,y,label="xx ",color="red",linewidth=2)

'''

for colnum in range(table.ncols):

x=[]

y=[]

for rownum in range(table.nrows):

value = table.cell(rownum,colnum).value

#print("nr=%d nc=%d value=%d \n"%(rownum,colnum,value ))

#print(value)

#print("rownum=%d colnum=%d "%(rownum,colnum))

if rownum == 0:

print("")

else:

try:

value_int = int(value)

x.append(x_index)

y.append(value_int)

#plt.plot(x_index,value_int,label=" ",color="red",linewidth=2)

#print("index=%d"%x_index)

#plt.plot_date(x_index,value_int)

x_index=x_index+1

except:

print("error")

if COLOR_INDEX == 1:

COLOR_INDEX = 0

plt.plot(x,y,color="red",linewidth=2)

else:

COLOR_INDEX =1

plt.plot(x,y,color="blue",linewidth=2)

print("==============================>")

plt.title("RTT Test")

#plt.ylim(10,2000)

plt.legend()

plt.show()

pass

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