R中的3D绘图-使用颜色的第4维 [英] 3D Plotting in R - Using a 4th dimension of color

问题描述

我正在使用plot3d函数在我的R脚本中绘制3d图.我想添加一个第四维，它将是彩色的.我该怎么办?

I am using the plot3d function to make a 3d plot in my R script. I'd like to add a 4th dimension, which will be color. How can I do this?

具体来说，假设我有以下代码:

Specifically, assume I have the following code:

plot3d(x, y, z, col=cols, size=2, type='s')

如何根据作为第4维的值向量填充cols.

how would I populate cols based on a vector of values acting as my 4th dimension.

推荐答案

只需创建一个颜色图，然后使用c变量的剪切版本对其进行索引:

Just make a colormap, and then index into it with a cut version of your c variable:

x = rnorm(100)
y = rnorm(100)
z = rnorm(100)

c = z
c = cut(c, breaks=64)
cols = rainbow(64)[as.numeric(c)]

plot3d(x,y,z,col=cols)

这篇关于R中的3D绘图-使用颜色的第4维的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！