Change direction of axis title and label in 3dplots in R? - r

Question

I have a question that might be easy for a person who is expert in R plot. I need to draw 3D plot in R. My data is as follows:
df <- data.frame(a1 = c(489.4, 505.8, 525.8, 550.2, 576.6),
a2 = c(197.8, 301, 389.8, 502, 571.2),
b1 = c(546.8, 552.6, 558.4, 566.4, 575),
b2 = c(287.2, 305.8, 305.2, 334.4, 348.6), c1 = c(599.6, 611.4,
623.6, 658, 657.4), c2 = c(318.8, 423.2, 510.8, 662.4, 656),
d1 = c(616, 606.8, 600.2, 595.6, 595),
d2 = c(242.4, 292.8, 329.2, 378, 397.2),
e1 = c(582.4, 580, 579, 579, 579),
e2 = c(214, 255.4, 281.8, 303.8, 353.8))
colnames(df) <- rep(c("V1", "V2"), 5)
df.new <- rbind(df[, c(1, 2)],df[, c(3, 4)],df[, c(5, 6)],
df[, c(7, 8)],df[, c(9, 10)])
df.new$Group <- factor(rep(c("a","b","c","d","e"), each = 5))
df.new$Class <- rep(c(1:5), 5)
I am drawing a 3D Plot using scatterplot3d package.
x=df.new$Class
y=V1
z=V2
scatterplot3d(x,y,z, pch = 16, color=colors,main="3D V1 v.s V2",xlab =
"Class",ylab = "V1", zlab = "V2")
Now I want to do 2 modifications. One is to make the vertical title of those axis horizontal and the next is to put a label for values of x and for example put a label "first interval" for 1 in x values and so one and so forth. How an I do it?
Also, how can I make the points linear or plane instead of dots.

Answer 1

One is to make the vertical title of those axis horizontal
To do this you need to hide the current label, and use the text() function to add a rotated label in the correct spot; as described here Rotate y-axis label in scatterplot3d (adjust to angle of axis)
set.seed(42)
scatterplot3d(rnorm(20), rnorm(20), rnorm(20), ylab = "")
text(x = 5, y = -2.5, "Y-axis", srt = 45)
and for example put a label "first interval" for 1 in x values and so one and so forth. How an I do it?
From the documentation - https://cran.r-project.org/web/packages/scatterplot3d/scatterplot3d.pdf
Use the x.ticklabs attribute, for example:
xlabs <- c("first interval", "second", "third", "fourth", "this is 5")
scatterplot3d(x,y,z, pch =16,main="3D V1 v.s V2",xlab = "Class",ylab = "V1", zlab = "V2", x.ticklabs=xlabs)
Also, how can I make the points linear or plane instead of dots.
Scatterplot3d offers "lines" and "vertical lines", for example:
scatterplot3d(x,y,z , type="l", lwd=5, pch=" ")
#or
scatterplot3d(x,y,z , type="h", lwd=5, pch=" ")