Hi all,
Is there any way I can add more columns to an existing filebacked big.matrix
object.
In general, I want a way to modify an existing big.matrix object, i.e., add
rows/columns, rename colnames, etc.
I tried the following:
> library(bigmemory)
> x =
read.big.matrix("test.csv",header=T,type="double",shared=T,backingfile="test
.backup",descriptorfile="test.desc")
> x[,"v4"] = "new"
Error in mmap(j, colnames(x)) :
Couldn't find a match to one of the arguments.
(The above functionality is presently there in usual data.frames in R.)
Thanks in advance,
Utkarsh
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