python3绘图示例1（基于matplotlib）

#!/usr/bin/env python# -*- coding:utf-8 -*-

import numpy as npimport matplotlib.pyplot as pltimport jsonfrom decimal import Decimal

# 保留浮点类型jstring=‘{"name":"pro","price":12.05}‘str=json.loads(jstring,parse_float=Decimal)print(str)

# 柱状图def is_outlier(points,threshold=3.5):    if len(points.shape)==1:        points=points[:,None]

median=np.median(points,axis=0)        diff=np.sum((points-median)**2,axis=-1)        diff=np.sqrt(diff)        med_abs_deviation=np.median(diff)

modified_z_score=0.6745*diff/med_abs_deviation        return modified_z_score > threshold

x=np.random.random(10)buckets=50np.r_[x,-49,95,100,-100]fitered=x[~is_outlier(x)]

plt.figure()

plt.subplot(211)plt.hist(x,buckets)plt.xlabel(‘Raw‘)

plt.subplot(212)plt.hist(fitered,buckets)plt.xlabel(‘Cleaned‘)

plt.show()

原文地址：https://www.cnblogs.com/NiceTime/p/10125207.html