R语言处理PCR数据，一步画柱状图、添加显著性标志并实现截断

Last updated on Aug 16, 2021 1 min read 教程, R

比如有如下的一个表格

library(DT)
pcr<-read.csv('~/Desktop/pcr.csv')
knitr::kable(pcr)

group	GAPDH	ST3GAL5	X_Ct	cycle
NC	12.17	23.76	11.59	first
NC	11.88	23.79	11.91	first
NC	11.92	23.57	11.65	first
OE	11.81	19.06	7.25	first
OE	11.66	19.14	7.48	first
OE	11.59	18.81	7.22	first
NC	11.66	24.06	12.40	secend
NC	11.60	24.00	12.40	secend
NC	11.52	24.16	12.64	secend
OE	11.97	18.77	6.80	secend
OE	11.85	18.89	7.04	secend
OE	11.91	18.84	6.93	secend
NC	12.01	23.98	11.97	third
NC	12.01	23.99	11.98	third
NC	11.95	23.80	11.85	third
OE	11.78	19.89	8.11	third
OE	11.85	19.75	7.90	third
OE	11.81	19.47	7.66	third