Fill an empty matrix in R
In this article, we will discuss how to fill the empty matrix with values in R Programming Language. First, let’s create an empty matrix.
Syntax:
matrix_name[row,column]=value.
Where, row and column are the numbers in which the value is occupied.
Example:
R
# create empty matrix. a<- matrix (nrow=4,ncol=4) # display matrix print (a) # filling empty matrix with value at # 2nd row and 4 th column a[2,4]=4 print (a) # create empty matrix. a<- matrix (nrow=4,ncol=4) # filling empty matrix with value at # 4th column a[,4]=4 print (a) # create empty matrix. a<- matrix (nrow=4,ncol=4) # filling empty matrix with value at # 4th row a[4,]=4 print (a) |
Output:
We can replace with same value for all empty value in a matrix, by using [,].
Example
R
# create empty matrix. a<- matrix (nrow=4,ncol=4) # display matrix print (a) # replace empty matrix with 5 value a[,]=5 print (a) |
Output:
Even a range can be inserted.
Example
R
# create empty matrix. a<- matrix (nrow=4,ncol=4) # display matrix print (a) # replace empty matrix with # 1 to 16 values a[,]=1:16 print (a) |
Output: