df2matrix | R Documentation |
Translates a data.frame
, in a form usable by MLwiN for multiple membership models,
into a matrix
. The data.frame needs to contain (a) columns with membership IDs
(e.g. first row of which might be 2, 3, 5, 6, 0, 0
) and (b) columns containing weights
(e.g. first row of which might be 0.25, 0.25, 0.25, 0.25, 0, 0
; in this example the first row of
resulting matrix would be 0, 1, 1, 0, 1, 1
).
df2matrix(data, idcols, weightcols)
data |
A |
idcols |
String vector of the identifier column names. |
weightcols |
String vector of the weight column names. |
An adjacency matrix as returned by sparseMatrix
.
Zhang, Z., Charlton, C.M.J., Parker, R.M.A., Leckie, G., and Browne, W.J. (2016) Centre for Multilevel Modelling, University of Bristol, U.K.
matrix2df
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