plot3d: Interactive 3D plot of a RasterLayer

In rasterVis: Visualization Methods for Raster Data

Interactive 3D plot of a RasterLayer

Description

Make an interactive 3D plot (map) of a RasterLayer. This is a wrapper around surface3d in the rgl package. You can use decorate3d to add axes.

Usage

## S4 method for signature 'RasterLayer'
plot3D(x, maxpixels=1e5, 
   zfac=1, drape=NULL, col=terrain.colors,
   at=100, rev=FALSE,
   useLegend=TRUE, adjust=TRUE, ...)

Arguments

x	a RasterLayer object
maxpixels	Maximum number of pixels to use
zfac	Numeric, to set the elevation scale relative to x and y
drape	RasterLayer, to 'drape' colors representing the values of this layer on the 3D representation of layer x. In this casex typically has elevation data
col	A color palette generating function such as rainbow, heat.colors, and topo.colors, or one or your own making
at	A numeric variable of breakpoints defining intervals along the range of x or a number definining the number of intervals the range of x will be divided into.
rev	Logical. If TRUE, the color palette values are reversed in order
useLegend	Logical. If TRUE (default) the content of the slot x@legend@colortable is used instead of col and at.
adjust	Logical. If TRUE, the x and y axes are scaled relative to the cell (z) values
...	Any argument that can be passed to surface3d

Note

Previous versions opened a new device with each call of plot3D. This behaviour has been modified, and now a new device is opened only if none is active. Thus, you should use rgl::open3d() if you need to display a new scene without modifying the current one.

Author(s)

Robert J. Hijmans and Oscar Perpiñán

Examples

 ## Not run: 
library(raster)

## rgl is needed to use plot3D
library(rgl)

data(volcano)
r <- raster(volcano)
extent(r) <- c(0, 610, 0, 870)

## level plot as reference
levelplot(r, col.regions=terrain.colors)

plot3D(r)
## Use different colors with a predefined function
plot3D(r, col = rainbow)
## or with a custom function using colorRampPalette
myPal <- colorRampPalette(RColorBrewer::brewer.pal(11, 'PuOr'))
plot3D(r, col = myPal)

## With at you can define an homogeneus color table for different Rasters

r2 <- r + 100
r3 <- r + 200
s <- stack(r, r2, r3)

maxVal <- max(maxValue(s))
minVal <- min(minValue(s))
N <- 40
breaks <- seq(minVal, maxVal, length=N)

plot3D(r, at=breaks)
plot3D(r2, at=breaks)
plot3D(r3, at=breaks)

## Default: x-axis and y-axis are adjusted with z-values. Therefore,
## labels with decorate3d() are useless
plot3D(r, adjust=TRUE)
decorate3d()
## Compare the graphic limits
par3d('bbox')
## with the extent of the Raster
extent(r)

## Set adjust=FALSE to fix it
plot3D(r, adjust=FALSE)
decorate3d()
## Once again, compare the graphic limits
par3d('bbox')
## with the extent of the Raster
extent(r)

## zfac controls the z values so z-axis will be distorted
plot3D(r, adjust=FALSE, zfac=2)
decorate3d()
par3d('bbox')


## With drape you can disconnect the z-axis from the colors
drape <- cut(r^4, 4)
plot3D(r, drape=drape)
## Compare with:
plot3D(r, at=4)

## End(Not run)

rasterVis documentation built on Nov. 2, 2023, 5:25 p.m.