I am working with the R programming language. I defined a function, evaluated this function at different points and created a graph of this function:

```
library(plotly)
library(dplyr)
set.seed(123)
#create grid and evaluate function
input_1 <- seq(0,100,1)
input_2 <- seq(0,100,1)
input_3 <- seq(0,100,1)
input_4 <- seq(0,100,1)
my_grid <- data.frame(input_1, input_2, input_3, input_4)
my_grid$final_value = sin(input_1) + cos(input_2) + input_3 + input_4
plot_ly() %>%
add_trace(data = my_grid, x=my_grid$input_1, y=my_grid$input_2, z=my_grid$input_3, type='mesh3d') %>%
add_surface(
z = my_grid %>% as.matrix(),
surfacecolor = my_grid,
cauto=F,
cmax=max(my_grid$final_value),
cmin=min(my_grid$final_value)
)
```

**Problem:** In this above plot, I was under the impression that `x = input_1, y = input_2, z = input_3`

and the color of the plot is according to "final_value". I have highlighted a point on the graph of (4,100, 200.356) . But if you were to look at the data used to create this plot ( `"my_grid"`

), there is no such point in the data.

**Question:** Can someone please explain this? Or am I misunderstanding this? Is it possible to alter the "hover text" so that for any point on this plot, it clearly displays the values of "input_1, input_2, input_3 and final_value"? Can someone please help me clarify this?

Thanks