r plotly 3d surface plot issue

Question

I am trying to plot a 3d surface plot based on these plotly examples

When I try these examples on my dataset

 test_plotly =   structure(list(Age = c         


        

Answer 1

add_surface requires x and y to form a grid and z to be a matrix over that grid. Without knowing exactly what your data are and what you want to do, I can only guess how to do that:

library(akima)

# interpolate data onto grid
test_plotly <- with(test_plotly, interp(Age, BMI, Task_Completion_Time,
                                        duplicate = "mean"))

# plot surface over grid
plot_ly(x = test_plotly$x, y = test_plotly$y, z = test_plotly$z,
        type = "surface")

will give you