I have a 5 x 30 matrix, G, created in sagemath. The type is
type 'sage.matrix.matrix_generic_dense.Matrix_generic_dense'.
I want to convert this matrix to a R matrix to perform various manipulations using the R interface.
How can I use sagemath matrix, G, to create a matrix in the R interface?
I tried the following but to no avail.
r.matrix(G)
r.matrix(G,5,30)
It looks like you have to put the matrix into a list representing a column vector. Then, you can use the r.matrix command. For example:
m=matrix(3,4,[1,2,3,4,5,6,7,8,9,10,11,12])
r.matrix(m.transpose().list(),nrow=3)
gives the following matrix in R:
[,1] [,2] [,3] [,4]
[1,] 1 2 3 4
[2,] 5 6 7 8
[3,] 9 10 11 12
Ah. I see. That makes sense. By converting the sagemath matrix into a list using its list method, r.matrix() accepts the list as input for the data argument. Also, for others who made read this comment, r.matrix(m.list(), nrow=3, byrow="False") or r.matrix(m.list(),ncol=4,byrow="False") yield the same R matrix as the one above. Thank you very much, calc314!
Asked: 2012-10-18 00:17:52 +0100
Seen: 1,230 times
Last updated: Oct 18 '12
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