Check if object is a tf_ggplot
Examples
p <- tf_ggplot(data.frame(x = 1))
is_tf_ggplot(p)
#> [1] TRUE
is_tf_ggplot(ggplot2::ggplot())
#> [1] FALSE
Check if object is a tf_ggplot
p <- tf_ggplot(data.frame(x = 1))
is_tf_ggplot(p)
#> [1] TRUE
is_tf_ggplot(ggplot2::ggplot())
#> [1] FALSE