2 messages · Jose Quesada, Douglas Bates
Hi,
I'm finding that readMM() cannot read a file written with writeMM().
Example:
library(Matrix)
a = Matrix(c(1,0,3,0,0,5), 10, 10)
a = as(a, "CsparseMatrix")
writeMM(a, "kk.mm")
b = readMM("kk.mm")
Error in validObject(.Object) : invalid class "dgTMatrix" object: all row
indices must be between 0 and nrow-1
Thoughts?
Thanks,
-Jose
Jose Quesada, PhD. http://www.andrew.cmu.edu/~jquesada
Hi,
I'm finding that readMM() cannot read a file written with writeMM().
Example:
library(Matrix)
a = Matrix(c(1,0,3,0,0,5), 10, 10)
a = as(a, "CsparseMatrix")
writeMM(a, "kk.mm")
b = readMM("kk.mm")
Error in validObject(.Object) : invalid class "dgTMatrix" object: all row
indices must be between 0 and nrow-1
You're right (and thanks for including a reproducible example). The writeMM function is writing 0-based indices when they should be 1-based. Thanks for bringing this to our attention. It's rather embarrassing that we didn't create such a test and discover it for ourselves. This will be fixed in the next release.