ipython と matplotlib

gistfile1.txt

# coding: utf-8

# In[26]:

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.dates as mdates
from datetime import datetime
from __future__ import print_function


# In[27]:

def conv_iso_date_str(s):
    return "{0[0]}-{0[1]:0>2}-{0[2]:0>2}".format(s.split('/'))


# In[28]:

# datetimeオブジェクトに変換して更に数値に変換
conv_fun = lambda s : mdates.date2num(datetime.strptime(conv_iso_date_str(s), "%Y-%m-%d")) 


# In[29]:

# print(conv_fun('2013/4/05'))


# In[58]:

f = np.genfromtxt("data.csv", skip_header=6, dtype="int, float",  delimiter=',',names="date, temp", usecols=('date','temp'),  converters={"date":conv_fun})


# In[59]:

print(f)


# In[60]:

plt.plot_date(f['date'], f['temp'], fmt='g:') # greenのドットで表示
plt.xlabel('year')
plt.ylabel('temparature')
plt.title("temparature from 1998/07/06 to 2014/07/06")