How do I plot a function formatted as a string in R -


i building application rapache , code in r receiving post data. 1 of post datas post$f string- "sin(x)". there way put plot function successfully?

thanks!

fun <- "sin(x)" plot(function(x) eval(parse(text=fun)))

but not recommend. eval(parse(...)) dangerous, , arbitrary user input web site gaping security hole.

# plotting function above delete in global workspace fun <- "{rm(list=ls(pos=1),pos=1); x}" # don't didn't warn you!

or using system() more bad things.


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