Python数据分析-1

第一次用python进行数据分析，速度很快很强大



# -*- coding: utf-8 -*-

"""

Created on Thu Sep 22 11:39:29 2016

import numpy as np

import pandas as pd

import matplotlib.pyplot as plt

yindex=np.arange(10,1510,10)

xindex=np.arange(0,1824.4,0.4)

df = pd.read_excel("meshdata.xls",header=None,names=yindex)

df.index=xindex

fig=plt.figure(figsize=(20,10))

ax=fig.add_subplot(111)

#plt.plot(df.index,df.loc[:,[10,20,30,40,50,60]])

#plt.legend(['10mm','20mm','30mm','40mm','50mm','60mm'])

plt.plot(yindex,df.loc[[0.4,900,1200,1800],:].T)

plt.grid()

plt.xlabel("Y Position(mm)")

plt.ylabel("Floating Height(mm)")

plt.title("Floating Height along Y-axis")

plt.legend(['0.4mm','900mm','1200mm','1800mm'])

plt.xlim(-20,1600)

plt.xticks(np.arange(-100,1700,100))

x_center=[]

for i in range(12):

    x0=62.5

    stroke=160

    x_center.append(125*i+x0)

    y0=0.035 if i%2==0 else 0.04

    

    x=[x_center[i]-stroke/2,x_center[i]+stroke/2]

    y=[y0,y0]

    optics=plt.plot(x,y)

    plt.setp(optics,linewidth=5.0)

plt.plot([750,750],[0,0.09],'g--')

plt.show()