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Wondering how to duplicate a vector into a matrix in R. For example
v = 1:10 dup = duplicate(V,2) where dup looks like rbind(1:10,1:10). Thanks
579
The matrix can be created by using matrix function in R and if we want to create a matrix by replicating a vector then we just need to focus on the replication. For example, if we have a vector V and we want to create matrix by replicating V two times then the matrix can be created as matrix(replicate(2,V),nrow=2).
There are two methods to create a vector with repeated values in R but both of them have different approaches, first one is by repeating each element of the vector and the second repeats the elements by a specified number of times. Both of these methods use rep function to create the vectors.
To convert a vector into matrix, just need to use matrix function. We can also define the number of rows and columns, if required but if the number of values in the vector are not a multiple of the number of rows or columns then R will throw an error as it is not possible to create a matrix for that vector.
To create a matrix in R you need to use the function called matrix(). The arguments to this matrix() are the set of elements in the vector. You have to pass how many numbers of rows and how many numbers of columns you want to have in your matrix. Note: By default, matrices are in column-wise order.
I think you're looking for replicate.
t(replicate(2, v)) Alternatively:
matrix(v, nrow=2, ncol=length(v), byrow=TRUE) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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