77 得分

Calculate difference between values in consecutive rows by group

77 得分

Summarizing multiple columns with data.table

77 得分

ending "+" prompt in R

77 得分

Boxplot show the value of mean

77 得分

Centering image and text in R Markdown for a PDF report

77 得分

Putting x-axis at top of ggplot2 chart

77 得分

.EACHI in data.table?

77 得分

dplyr mutate rowSums calculations or custom functions

77 得分

Applying group_by and summarise on data while keeping all the columns' info

77 得分

Change bar plot colour in geom_bar with ggplot2 in r