在 3D 视图中堆叠多个曲面图

Question

假设我有五个二维矩阵，它们描述了不同 z 层的磁场。二维曲面图的漂亮平滑版本可以按如下方式获得：

data2_I<-matrix(c(1.0,1.0,0.6,0.6,0.7,0.9,0.9,0.5,0.5,0.5,0.7,0.9,0.9,0.6,0.3,0.4,0.7,0.9,0.9,0.7,0.5,0.5,0.6,0.9,0.9,0.7,0.6,0.6,1.0,1.0), nrow=5)
Z = as.vector(data2_I)
length(Z)
XY=data.frame(x=as.numeric(gl(5,1,30)),y=as.numeric(gl(5,6,30)))
t=Tps(XY,Z)
surface(t)

现在，如果我能在不同的 z 位置绘制这些表面的 3D 绘图，那就太好了。有可能这样做吗？

Answer 1

我找到了另一种方法：使用包 rgl I 和函数 surface 3D，我可以在一个 open3d-window 中堆叠多个 3D 表面图。让我们看一个小例子：

library("rgl")
data2_I<-matrix(c(1.0,1.0,0.6,0.6,0.7,0.9,0.9,0.5,0.5,0.5,0.7,0.9,0.9,0.6,0.3,0.4,0.7,0.9,0.9,0.7,0.5,0.5,0.6,0.9,0.9,0.7,0.6,0.6,1.0,1.0), nrow=5)
data0_I<-matrix(c(1.0,1.0,0.6,0.6,0.7,0.9,0.9,0.5,0.5,0.5,0.7,0.9,0.9,0.6,0.3,0.4,0.7,0.9,0.9,0.7,0.5,0.5,0.6,0.9,0.9,0.7,0.6,0.6,1.0,1.0), nrow=5)
data1_I<-2*data0_I
data2_I<-1/data1_I

elv=0
offs=5*elv+1
z0 <- scale*data0_I        
z1 <- scale*data1_I
z2 <- scale*data2_I
x <- 1:nrow(z0)   
y <- 1:ncol(z0)   

palette <- colorRampPalette(c("blue","green","yellow", "red")) 
col.table <- palette(256)
open3d(windowRect=c(50,50,800,800))
surface3d(x, y, elv*z0, color = col.table[cut(z0, 256)], back = "lines") 
surface3d(x, y, elv*z1+1*offs, color = col.table[cut(z1, 256)], back = "lines")
surface3d(x, y, elv*z2+2*offs, color = col.table[cut(z2, 256)], back = "lines")
axes3d()
aspect3d(1,1,2)

包含变量 offsand elv 用于装饰目的：offs 控制两个表面图之间的 space 和高程 surface3d-plots 的 z 轴应如何缩放。因为我想要一个没有任何高程的 2D 曲面图，所以我将其设置为零。

在 3D 视图中堆叠多个曲面图

Stacking of several Surface plots in 3D-View

r

plot

3d

surface