Functions to convert a matrix to a list of partitioned matrices, and back again.
m2c(M, df = rep(1, dim(M)))
matrix to be partitioned according to
integer vector. See Details
list of matrices, typically the output of
m2c partitions a matrix into a list of matrices, by putting the first
df coloumns into the first matrix, the next
into the second, etc.
c2m joins a partitioned matrix back into a single matrix.
c2m(m2c(X, df)) equals
c2df takes a list of matrices and returns a vector with the number of
coloumns of the matrices.
m2c returns a list of matrices.
c2m returns a matrix.
c2df returns a numeric vector.
sum(df) must equal
Øyvind Langsrud and Bjørn-Helge Mevik
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