# Naming rows and columns

# Create observations matrix

obs<-matrix(c(8.4, 73.9, 8.2,72.5,8.8, 74.2, 7.9, 71.7), ncol=2, byrow=T)

# Display obs

obs

# Add column names using colnames()

colnames(obs)<-c("Weight(kg)","Height(cm)")

# Add row names using rownames()

rownames(obs)<-c("Child 1","Child 2","Child 3","Child 4")

# Display obs

obs

# Filter using column name

obs[,"Height(cm)"]

# Filter using row name

obs["Child 2",]