Matplotlib常用画图代码2

多条柱状图，中文，图例

代码块

把文章里面用到的代码都粘出来，不然重装系统丢掉后修改文章重画的工作量太大：

# -*- coding: utf-8 -*-import numpy as npfrom matplotlib import pyplot as pltimport matplotlibif __name__ == "__main__":    zhfont = matplotlib.font_manager.FontProperties(fname='/usr/share/fonts/truetype/wqy/wqy-microhei.ttc',size=18)    matplotlib.rcParams['axes.unicode_minus'] = False    plt.figure(figsize=(9,6))    n = 4    X = np.arange(n)+1    plt.clf()    Y1 = [0.731,0.894,0.727,0.820]    Y2 = [0.750,0.914,0.735,0.838]    plt.xticks([1.35,2.35,3.35,4.35], ['S','S+A','S+P','S+C'],size=18)    plt.yticks([0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0],size=18)    plt.xlabel(u'特征组合',fontproperties=zhfont,size=18)    plt.ylabel(u'指标值',fontproperties=zhfont,size=18)    b1 = plt.bar(X,Y1,width = 0.35,facecolor = 'white',edgecolor = 'black')    b2 = plt.bar(X+0.35,Y2,width = 0.35,facecolor = 'black',edgecolor = 'black')    plt.legend([b1,b2], [u"准确率",u"F 值"],loc='lower right',prop=zhfont)    plt.ylim(0.0,1.0)    plt.show()

三点度，幂率分布图绘制

代码块

# -*- coding: utf-8 -*-import time, osimport reimport jsonimport randomimport matplotlib.pyplot as pltfrom matplotlib.backends.backend_pdf import PdfPagesfrom pymongo import MongoClientimport typesimport mathimport matplotlib.pyplot as pltdef popu_scatter():    client = MongoClient("localhost", 27017)    db = client['NetEase']    table = db['news_popu_finished']    p = re.compile(r'[0-9]+')    commCnt_rem = []    for news in table.find():        commCnt = news['commCount']        if commCnt is None:            continue        elif type(commCnt) == types.IntType:            commCnt_rem.append(commCnt)        elif '-' in commCnt:            continue        else:            #print commCnt            commCnt = p.findall(commCnt)[0]            commCnt_rem.append(commCnt)    client.close()    commDict = {}    for item in commCnt_rem:        if int(item) not in commDict:            commDict[int(item)] = 1        else:            commDict[int(item)] = commDict[int(item)] + 1    target_cnt = 0    for item in commDict:        if item >= 0:            target_cnt = target_cnt + commDict[item]    print target_cnt    #print commDict    X = []    Y = []    for item in commDict:        #print item        X.append(math.log10(float(item+1)))        Y.append(math.log10(float(commDict[item])+1))    plt.plot(X,Y,'ok',markersize=3,alpha=0.5)    plt.xlim(0,7)    plt.ylim(0,4)    plt.ylabel(u'# news', fontsize = 12, rotation=90)    plt.xlabel(u'# views',fontsize = 12)    plt.show()if __name__ == "__main__":    popu_scatter()