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Is object of class "shapviz"?
is.shapviz(object)
Returns TRUE if object has "shapviz" among its classes, and FALSE otherwise.
TRUE
object
FALSE
An R object.
shapviz()
S <- matrix(c(1, -1, -1, 1), ncol = 2, dimnames = list(NULL, c("x", "y"))) X <- data.frame(x = c("a", "b"), y = c(100, 10)) shp <- shapviz(S, X) is.shapviz(shp) is.shapviz("a")
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