How to define argument types for R functions?

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名媛妹妹
名媛妹妹 2021-02-14 00:30

I am writing an R function, and I want to make sure that the argument of my R function is of a certain class (eg, \"matrix\").

What is the best way to do this?

S

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  •  逝去的感伤
    2021-02-14 01:07

    You can either check that it's a matrix with is.matrix or else convert it with as.matrix after the parameter is passed:

    foo <- function(x)
    {
       if(!is.matrix(x)) stop("x must be a matrix")
       # I want to make sure x is of type "matrix"
       solve(x)
    }
    

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