R wireframe()使用晶格错误的colorbar

Question

我尝试在lattice中使用wireframe()绘制横断面

颜色条错误

  require(marmap)
  require(lattice) 

     Bathy2 <- getNOAA.bathy(lon1 = 30, lon2 = 47,
                               lat1 = -12, lat2 = -28, resolution = 2)
#plot of the area + transect
     plot(Bathy2, image=TRUE, land = TRUE, lwd = 0.03,
             bpal = list(c(0,max(Bathy2), greys), c(min(Bathy2), 0, blues)))
     belt3 <- get.box(Bathy2, x1 = 34, x2 = 46, y1 = -20, y2 =  -20, width = 3, col = "red")

#3Dplot of the transect
       wireframe(belt3, shade = T, zoom = 1.1,
                  aspect = c(1/4, 0.1),
                  screen = list(z = -60, x = -55),
                  par.settings = list(axis.line = list(col = "white")),
                  par.box = c(col =rgb(0, 0, 0, 0.1)),
                  xlab="", colorkey = TRUE)

我得到的是一个粉红色的色条

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Answer 1

以explained here身份，使用shade = TRUE

根据小平面相对于观察方向和光源的方向，相同的Z值可以具有不同的颜色。因此，colorkey没有任何意义。

因此，我建议使用drape = TRUE：

# 3Dplot of the transect
wireframe(belt3, drape = TRUE, zoom = 1.1,
          aspect = c(1/4, 0.1),
          screen = list(z = -60, x = -55),
          par.settings = list(axis.line = list(col = "white")),
          par.box = c(col =rgb(0, 0, 0, 0.1)),
          xlab="", colorkey = TRUE, lwd = 0.2)

​

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您还可以定义自己的调色板。只要查看?wireframe就可以了。