search for: substitiu

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Did you mean: substitiue
2001 Apr 30
2
plotting an expression
..., nomatch = 0))) stop("'expr' must be a function or an expression containing 'x'") # expr <- sexpr if (is.null(ylab)) ylab <- deparse(sexpr) } lims <- if (is.null(xlim)) < ... > This is confusing, since substitiue(expression(cos(x))) returns just expression(cos(x)). Must be some side effects I do not understand. What is even more confusing is that the above code (with one line commented out) does not work when called as curve(parse(text="cos(x)")) although parse(text="co...