You can drop the quote marks by calling print() explicitly with quote=FALSE, by
using as.data.frame round your cbind, or - perhaps best - by constructing your
output matrix as a data frame in the first place. (print.data.frame defaults
to quote=FALSE). And if you suppress name checking in a data.frame call you can
get away with a space for variable names:
a <- data.frame(y=c(c(0.5,4.0)), " "="=",x=c(1,2), z=c(2,3),
row.names=sprintf("eq%d", 1:2), check.names=FALSE)
a
Steve E
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