入门目录:
一、对象(class)
1、向量(vector)
2、矩阵(matrix)
3、数据框(data.frame)
4、列表(list)
5、因子(factor)
二、转化类型
1、向量→字符串
2、数值→逻辑
3、数值→字符串
三、不同对象之间的运算
1、edit函数
2、head、tail
3、summary、均值、方差
4、 标准差、中位数、求和
5、长度、值域、分位数、最值
四、数据分析中重要函数运用
1、complete.case函数
2、md.pattern函数
3、aggressive函数
4、处理缺失值函数
5、日期处理
6、统计函数(密度函数,分布函数)
7、相关系数
8、矩阵的运算
9、随机抽样
10、字符串处理
11、apply、tapply函数
12、自定义函数function函数
13、控制语句ifelse
14、循环语句(for循环、while循环)
五、基本图形
1、介绍R图形各参数
2、散点图(plot)
3、矩形(box)
4、条形图(barplot)
5、棘状图(spine)
6、饼图(pie)
7、扇形图(fan.plot)
8、箱型图(boxplot)
9、直方图(hist)
10、折线图(plot)
11、QQ图(qqnorm)
12、3D图(persp3d)
13、相关系数图(corrgram)
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