Check whether functions (plot*d to zenplot()) exist

Check whether functions (plot*d to zenplot()) exist

Usage

plot_exists(x)

Arguments

x

arguments plot1d or plot2d of zenplot()

Value

logical indicating whether x exists

Note

Check first whether it's a function (have to rely on it being able to be evaluated, cannot do more checks then) or, if a string, whether it exists

Author

Marius Hofert