just for learning
sudo apt-get install python3-tk
1.1 获取从文件中逐行获取数据 示例 from numpy import * from sampledatas.gradedata import creatematrixdata
group,labels = creatematrixdata("sampledatas/dataForKNN.txt",3)
print(group[0:10],labels[0:10])
打印结果：
[[ 4.09200000e+04 8.32697600e+00 9.53952000e-01]
[ 1.44880000e+04 7.15346900e+00 1.67390400e+00]
[ 2.60520000e+04 1.44187100e+00 8.05124000e-01]
[ 7.51360000e+04 1.31473940e+01 4.28964000e-01]
[ 3.83440000e+04 1.66978800e+00 1.34296000e-01]
[ 7.29930000e+04 1.01417400e+01 1.03295500e+00]
[ 3.59480000e+04 6.83079200e+00 1.21319200e+00]
[ 4.26660000e+04 1.32763690e+01 5.43880000e-01]
[ 6.74970000e+04 8.63157700e+00 7.49278000e-01]
[ 3.54830000e+04 1.22731690e+01 1.50805300e+00]] [3, 2, 1, 1, 1, 1, 3, 3, 1, 3]
1.2 使用matplotlib根据文件中的数据,选择其中的两列作为横纵坐标，画出散列图 示例 from numpy import * from sampledatas.gradedata import creatematrixdata import matplotlib from matplotlib import pyplot group,labels = creatematrixdata("sampledatas/dataForKNN.txt",3) print(group[0:10],labels[0:10]) #解决中文显示问题，手动引入中文字体文件,ubuntu 下fc-list :lang=zh 列出可用的中文字体 zhfont = matplotlib.font_manager.FontProperties(fname='/usr/share/fonts/truetype/wqy/wqy-microhei.ttc') fig = pyplot.figure() pyplot.xlabel(u'Test横轴X',fontproperties=zhfont) pyplot.ylabel(u'Test纵轴Y',fontproperties=zhfont) ax = pyplot.subplot(111) ax.scatter(group[:,1],group[:,2],15.0array(labels),15.0array(labels)) pyplot.show()
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent