question about cleaning up data labels on a plot3d plot
Sure, you can do any of that in R.
You might benefit from reading some introductory material so you
understand at least graphical parameters and subsetting, but here's
some sample code with fake data that does what you're asking.
library(rgl)
x <- sort(rnorm(10))
y <- rnorm(10)
z <- rnorm(10) + atan2(x, y)
# version one: text only
plot3d(x, y, z, type="n")
text3d(x, y, z, text=letters[1:10], cex=2)
# version two: colored symbols
data.groups <- sample(1:3, size=10, replace=TRUE)
data.colors <- c("red", "purple", "blue")
plot3d(x, y, z, size=8, col=data.colors[data.groups])
Sarah
On Wed, Aug 24, 2016 at 1:57 AM, LMH <lmh_users-groups at molconn.com> wrote:
Hello,
I am rather unfamiliar with R but need a 3D plot for something I am working
on.
I was able to generate a plot with the following,
library(rgl)
setwd("G:/shared_data/R_projects/3D_plot")
df <- read.table("R_input_3D_PCA-3_RI9_60.txt", header = TRUE)
plot3d(df$PCA_Axis1, df$PCA_Axis2, df$PCA_Axis3, col="blue", size=10)
My data is tab delimited and looks like,
num PCA_Axis1 PCA_Axis2 PCA_Axis3
11 -0.672164 -0.83449 -1.06511
12 -1.23009 1.57928 -0.066808
42 2.80029 0.533236 -0.197187
60 2.25999 -0.233224 -0.00267827
67 1.82422 -0.840649 0.156681
There are a total of 60 rows.
Adding,
text3d(df, text=df$num)
displays my index value on the plot, but the numbers are very hard to read.
It looks like the the labels are behind the points. Is there any way to
clean this up some? I guess I could color the points white so I only see the
numbers.
I also have 2 or three different sub groups within the data. Is there any
way to have these different groups appear in different colors? I could
create multiple data.frames if that would help. I am not sure you can
display data from multiple frames on the same plot.
Suggestions would be appreciated,
LMH