presto 数据导出问题排查
864 2023-04-03 04:27:32
Pandas的DataFrame和Series在Matplotlib基础上封装了一个简易的绘图函数,使得数据处理过程中方便可视化查看结果。
import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
data
=
np.random.randn(
5
,
2
)
*
10
df
=
pd.DataFrame(np.
abs
(data),index
=
[
1
,
2
,
3
,
4
,
5
],columns
=
[
1
,
2
])
df.plot()
plt.show()
import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
data
=
np.random.randn(
5
,
2
)
*
10
df
=
pd.DataFrame(np.
abs
(data),index
=
[
1
,
2
,
3
,
4
,
5
],columns
=
[
1
,
2
])
df.plot(kind
=
'bar'
)
plt.show()
import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
data
=
np.random.randn(
5
,
2
)
*
10
df
=
pd.DataFrame(np.
abs
(data),index
=
[
1
,
2
,
3
,
4
,
5
],columns
=
[
1
,
2
])
df.plot(kind
=
'barh'
)
plt.show()
import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
data
=
np.random.randn(
5
,
2
)
*
10
df
=
pd.DataFrame(np.
abs
(data),index
=
[
1
,
2
,
3
,
4
,
5
],columns
=
[
1
,
2
])
df.plot(kind
=
'bar'
,stacked
=
True
)
plt.show()
?1234567import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
data
=
np.random.randn(
5
,
2
)
*
10
df
=
pd.DataFrame(np.
abs
(data),index
=
[
1
,
2
,
3
,
4
,
5
],columns
=
[
1
,
2
])
df.plot(kind
=
'barh'
,stacked
=
True
)
plt.show()
数据通常是一些点的集合
常用来绘制各种相关性,适合研究不同变量间的关系
import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
data
=
np.random.randn(
5
,
2
)
*
10
df
=
pd.DataFrame(np.
abs
(data),index
=
[
1
,
2
,
3
,
4
,
5
],columns
=
[
'A'
,
'B'
])
df.plot(kind
=
'scatter'
,x
=
'A'
,y
=
'B'
,s
=
df.A
*
100
,c
=
'red'
)
plt.show()
import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
df
=
pd.Series(
3
*
np.random.rand(
4
),index
=
[
'a'
,
'b'
,
'c'
,
'd'
])
df.plot.pie(figsize
=
(
6
,
6
))
plt.show()
体现数据出现的次数
?123456import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
df
=
pd.DataFrame(np.random.randn(
1000
,
2
),columns
=
[
'a'
,
'b'
])
df.plot.hexbin(x
=
'a'
,y
=
'b'
,sharex
=
False
,gridsize
=
30
)
plt.show()
基于最小值、上四分位、中位数、下四分位和最大值5个数值特征展示数据分布的标准方式,可以看出数据是否具有对称性,适用于展示一组数据的分布情况
?123456import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
df
=
pd.DataFrame(np.random.randn(
1000
,
2
),columns
=
[
'a'
,
'b'
])
df.plot(y
=
df.columns,kind
=
'box'
,vert
=
False
)
plt.show()
subplots:默认False 若每列绘制子图就为True
layout:子图布局
figsize:画布大小
?123456import
pandas as pd
import
numpy as np
import
matplotlib.pyplot as plt
df
=
pd.DataFrame(np.random.randn(
5
,
2
),columns
=
[
'a'
,
'b'
])
df.plot(subplots
=
True
,layout
=
(
2
,
3
),figsize
=
(
10
,
10
),kind
=
'bar'
)
plt.show()
以上就是Python Pandas工具绘制数据图使用教程的详细内容,更多关于Python Pandas 绘制图的资料请关注脚本之家其它相关文章!
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