Hi,
Down a cascade of function calls, I want to use the curve function with an
expression that is a variable. For various reason, this variable must be a
character object and cannot be an expression as required by the curve function.
How do I convert my variable into a expression that is accepted by curve?
Thanks in advance for your help.
## The following attempts do not work
myf <- '1+x^2'
curve(myf, from = 0, to = 10) # obviously !
curve(parse(text=myf), from = 0, to = 10) # not sure why this does not work
## This works but does not feel elegant:
eval(parse(text=sprintf('curve(%s, from = 0, to = 10)', myf)))
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