How to fix a 3D plot with missing values in plot3d

Question

I'm trying to create a 3d graph with three quantitiave variables ( ama$p_022 , ama$p_023 , ama$p_024 ) and one categorical ( ama$p ). Quantitatives have NA 's and the categorical only two values, but when I use this command

plot3d(ama$p_022,ama$p_023,ama$p_024,col=as.integer(ama$p))

R gives me a warning message

In f(...) : NAs introduced by coercion

and it doesn't produce the graph. Can you help me?

Answer 1

我更改了数字字符串...