delete column i dataframe r code example

Example 1: drop columns by index r

#drop columns by index
df <- mydata[ -c(1,3:4) ]
#drop columns by name
df = subset(mydata, select = -c(x,z))

Example 2: how to exclude columns in r

> Data$genome <- NULL
> head(Data)
   chr region
1 chr1    CDS
2 chr1   exon
3 chr1    CDS
4 chr1   exon
5 chr1    CDS
6 chr1   exon