I have posted this message on r-lang, but it is perhaps more appropriate
on r-devel:
---
Hello,
I'm puzzled by a problem with call to diag(), rowSums(), rownames() on
objects of class "dgtMatrix", created by sparseMatrix() or spMatrix().
I use Matrix 0.999375-30.
The weird thing is that I don't encounter any problem when I use this
functions on the R prompt, or source()-ing a script file; I encounter
problems when the code is in a package, installed with R CMD INSTALL, and
loaded with library().
I have tried to reduce the package to the bare minimum in order to
discover the problem, but it continue even when reduced up to a single
method, no dependency other than Matrix. The method is defined as:
---
getAdjacentAsSparseMatrix <- function() {
adjacents <- sparseMatrix(i=1:10, j=1:10, x=1:10)
print(class(adjacents));
diagonal <- as.vector(diag(adjacents));
if (any(diagonal != 0)) {
diagonal[diagonal > 1] <- 1;
diag(adjacents) <- diagonal;
}
return(adjacents);
}
---
And the Depends field in ./DESCRIPTION :
---
Depends: R (>= 2.5.0), Matrix
---
I have this outputs:
[1] "dgTMatrix"
Erreur dans y[1L + 0L:(m - 1L) * (n + 1L)] <- x :
types (de S4 a double) incompatibles dans l'ajustement d'affectation de
type
> traceback()
3: diag(adjacents)
2: as.vector(diag(adjacents))
1: getAdjacentAsSparseMatrix(white3)
The same thing happens with the method rowSums(), colnames() and
rownames(). In brief, it looks as if the generic functions were called,
and not the overloaded ones. I can't figure out how to fix that, and will
be interested in any pointers.
Best,
Sylvain
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