Caroline Bazzoli wrote:
> Dear R-experts,
>
> I need to replace in an expression the character "Cl" by "Cl+beta"
>
> But in the following case:
>
> form<-expression((Cl-(V *ka) ) +(V *Vm *exp(-(Clm/Vm) *t)))
>
> gsub("Cl","(Cl+beta)",as.character(form))
>
> We obtain:
>
> [1] "((Cl+beta) - (V * ka)) + (V * Vm * exp(-((Cl+beta)m/Vm) * t))"
>
>
> the character "Clm" has been also replaced.
>
>
> How could I avoid this unwanted replacement ?
try '\\bCl\\b' as the pattern, which says 'match Cl as a separate word'.
vQ
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