Rolma - 22 days ago 6

R Question

I have some problem with curve3d.

I have a following equation to be plotted:

`library(emdbook)`

curve3d ( 87.56 + 0.772*x - 0.022*x*y + 0.162*x^2, xlim=c(0,70), ylim=c(0,70), xlab="axe1", ylab="axe2", zlab="axe3", col="green", phi = 10, theta = 180)

How i can add scale to axes?

Answer

By scale you mean ticks, I guess?

`emdbook::curve3d()`

uses `graphics::persp()`

as a default to plot. To add ticks you can change the `persp()`

parameter `ticktype`

from `"simple"`

to `"detailed"`

. See `?persp`

for even more options.

```
library(emdbook)
curve3d (
87.56 + 0.772*x - 0.022*x*y + 0.162*x^2,
xlim=c(0,70), ylim=c(0,70),
xlab="axe1", ylab="axe2", zlab="axe3",
col="green",
phi = 10, theta = 180,
sys3d = "persp",
ticktype = "detailed"
)
```

By the way I would consider using `sys3d = "rgl"`

to get a real, movable 3D plot. `rgl`

is a powerful 3D plotting package.