Day1-R 04 read_edit_writ.R

1.读取ex1.txt

> read.table("ex1.txt",header = T)#文本文件用""

1.png

2.读取ex2_B cell receptor signaling pathway.csv

> read.csv("ex2_B cell receptor signaling pathway.csv",row.names = 1)

2.png

3.读取GSE32575_series_matrix.txt，赋值给gse。

> gse <- read.table("GSE32575_series_matrix.txt",
                    comment.char = "!",
                    header = T,
                    row.names = 1)
> View(gse)

3.png

4.描述gse的属性

dim(gse)
colnames(gse)
rownames(gse)
class(gse)

5.将gse导出为新的txt和csv文件。

> write.csv(gse,"diwu")

6.将gse保存为Rdata并加载。

> save(gse,file = "timu6.Rdata")
> rm(list = ls())
> load("timu6.Rdata")