https://www.analyticsvidhya.com/blog/2015/08/common-machine-learning-algorithms/?spm=5176.100239.blogcont61037.12.0MhmIg https://yq.aliyun.com/articles/61037?spm=5176.100239.bloglist.110.rlSDN9 We are probably living in the most defining period of hu
The R qgraph Package: Using R to Visualize Complex Relationships Among Variables in a Large Dataset, Part One A Tutorial by D. M. Wiig, Professor of Political Science, Grand View University In my most recent tutorials I have discussed the use of the
In two previous blog posts I discussed some techniques for visualizing relationships involving two or three variables and a large number of cases. In this tutorial I will extend that discussion to show some techniques that can be used on large datase
R支持4种图形类型: base graphics, grid graphics, lattice graphics, ggplot2. Base graphics是R的默认图形系统. 一. 基本图形函数plot() plot()命令中的type参数用于明确图形如何绘制,具体type值使用如下: "p" for "points" "l" for "lines" "o" for "overlaid
三个相关性函数: cor():R自带的,输入数据可以是vector,matrix,data.frame,输出两两的相关系数R值 cor.test():R自带的,输入数据只能是两个vector,输出两个变量的相关系数R值,显著性水平a值 corr.test():psych包的,输入数据可以是data.frame,输出两两变量的相关系数R值,显著性水平a值 > cor(state.x77) Population Income Illiteracy Life Exp Murder HS Grad Fr