[英]rgl 3D scatterplot - controlling size of spheres from 4th dimension (bubble plot)
I am working on a 3D scatter plot using rgl package in R, with multiple colors for different series. 我正在使用R中的rgl包来制作3D散点图,其中不同系列使用多种颜色。 I was wondering if there would be a way to plot a 4th dimension by controlling the size of spheres.
我想知道是否可以通过控制球体的大小来绘制第4维。
I know it's possible with plotly ("bubble plot") : https://plot.ly/r/3d-scatter-plots/ , but Plotly starts to flicker when dealing with lots of datapoints. 我知道有可能使用plotly(“气泡图”): https ://plot.ly/r/3d-scatter-plots/,但是当处理大量数据点时,Plotly开始闪烁。 Can the same result be achieved using Rgl?
使用Rgl可以达到相同的结果吗?
set.seed(101)
dd <- data.frame(x=rnorm(100),y=rnorm(100),z=rnorm(100),
c=rnorm(100),s=rnorm(100))
Scaling function (I tweaked to keep the values strictly in (0,1), don't know if that's really necessary): 缩放功能(我将值严格限制为(0,1),不知道这是否真的必要):
ss <- function(x) scale(x,center=min(x)-0.01,scale=diff(range(x))+0.02)
library(rgl)
Define colours (there may be a better way to do this ...) 定义颜色(可能会有更好的方法...)
cvec <- apply(colorRamp(c("red","blue"))(ss(dd$c))/255,1,
function(x) rgb(x[1],x[2],x[3]))
The picture (need type="s"
to get spheres) 图片(需要
type="s"
才能获得球体)
with(dd,plot3d(x,y,z,type="s",radius=ss(s), col=cvec))
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