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R Programing to change the name of column variable and row variable in xtab table.
To change the name of column variable and row variable in xtab table, we can use setNames function.
For Example, if we have a xtab table called XTAB and we want to change the column variable name C and row variable name R then we can use the below command −
dimnames(XTAB)<-setNames(dimnames(XTAB),c("R","C"))Example 1
Following snippet creates a sample data frame −
Table1<-xtabs(~as.factor(letters[1:5])+letters[1:5]) Table1
The following dataframe is created
letters[1:5]
as.factor(letters[1:5]) a b c d e
a 1 0 0 0 0
b 0 1 0 0 0
c 0 0 1 0 0
d 0 0 0 1 0
e 0 0 0 0 1To change column and row variable name in Table1 on the above created data frame, add the following code to the above snippet −
Table1<-xtabs(~as.factor(letters[1:5])+letters[1:5])
dimnames(Table1)<-setNames(dimnames(Table1),c("Rows","Columns"))
Table1Output
If you execute all the above given snippets as a single program, it generates the following Output −
Columns Rows a b c d e a 1 0 0 0 0 b 0 1 0 0 0 c 0 0 1 0 0 d 0 0 0 1 0 e 0 0 0 0 1
Example 2
Following snippet creates a sample data frame −
Cat1<-sample(c("Hot","Cold"),20,replace=TRUE)
Cat2<-sample(c("Low","Medium","High"),20,replace=TRUE)
dat1<-data.frame(Cat1,Cat2)
dat1The following dataframe is created
Cat1 Cat2 1 Cold High 2 Hot High 3 Hot High 4 Hot High 5 Cold Low 6 Hot Low 7 Hot Medium 8 Hot Low 9 Cold Medium 10 Hot High 11 Hot Low 12 Cold Low 13 Hot Low 14 Hot Low 15 Hot Medium 16 Cold Medium 17 Hot Medium 18 Hot Low 19 Hot High 20 Cold Medium
Add the following code to the above snippet −
Cat1<-sample(c("Hot","Cold"),20,replace=TRUE)
Cat2<-sample(c("Low","Medium","High"),20,replace=TRUE)
dat1<-data.frame(Cat1,Cat2)
Table2<-xtabs(~Cat1+Cat2,data=dat1)
Table2Output
If you execute all the above given snippets as a single program, it generates the following Output −
Cat2 Cat1 High Low Medium Cold 1 2 3 Hot 5 6 3
To change column and row variable name in Table2 on the above created data frame, add the following code to the above snippet −
Cat1<-sample(c("Hot","Cold"),20,replace=TRUE)
Cat2<-sample(c("Low","Medium","High"),20,replace=TRUE)
dat1<-data.frame(Cat1,Cat2)
Table2<-xtabs(~Cat1+Cat2,data=dat1)
dimnames(Table2)<-setNames(dimnames(Table2),c("Group1","Group2"))
Table2Output
If you execute all the above given snippets as a single program, it generates the following Output −
Group2 Group1 High Low Medium Cold 1 2 3 Hot 5 6 3
Example 3
Following snippet creates a sample data frame −
Level_1<-sample(c("Upper","Lower"),20,replace=TRUE)
Level_2<-sample(c("Super","top-notch"),20,replace=TRUE)
dat2<-data.frame(Level_1,Level_2)
dat2The following dataframe is created
Level_1 Level_2 1 Upper top-notch 2 Lower Super 3 Lower top-notch 4 Lower Super 5 Upper top-notch 6 Upper top-notch 7 Lower top-notch 8 Lower top-notch 9 Upper top-notch 10 Lower top-notch 11 Upper Super 12 Upper top-notch 13 Lower top-notch 14 Lower top-notch 15 Upper top-notch 16 Lower top-notch 17 Upper top-notch 18 Lower top-notch 19 Lower Super 20 Upper Super
Add the following code to the above snippet −
Level_1<-sample(c("Upper","Lower"),20,replace=TRUE)
Level_2<-sample(c("Super","top-notch"),20,replace=TRUE)
dat2<-data.frame(Level_1,Level_2)
Table3<-xtabs(~Level_1+Level_2,data=dat2)
Table3Output
If you execute all the above given snippets as a single program, it generates the following Output −
Level_2 Level_1 Super top-notch Lower 3 8 Upper 2 7
To change column and row variable name in Table3 on the above created data frame, add the following code to the above snippet −
Level_1<-sample(c("Upper","Lower"),20,replace=TRUE)
Level_2<-sample(c("Super","top-notch"),20,replace=TRUE)
dat2<-data.frame(Level_1,Level_2)
Table3<-xtabs(~Level_1+Level_2,data=dat2)
dimnames(Table3)<-setNames(dimnames(Table3),c("Minor","Major"))
Table3Output
If you execute all the above given snippets as a single program, it generates the following Output −
Major Minor Super top-notch Lower 3 8 Upper 2 7
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