R: Plot a Three-Dimensional Point Pattern

plot.pp3 {spatstat.geom} | R Documentation

## Plot a Three-Dimensional Point Pattern

### Description

Plots a three-dimensional point pattern.

### Usage

     ## S3 method for class 'pp3'
    plot(x, ..., eye=NULL, org=NULL, theta=25, phi=15,
                        type=c("p", "n", "h"),
                        box.back=list(col="pink"),
                        box.front=list(col="blue", lwd=2))

### Arguments

`x` | Three-dimensional point pattern (object of class `"pp3"`).
`...` | Arguments passed to `points` controlling the appearance of the points.
`eye` | Optional. Eye position. A numeric vector of length 3 giving the location from which the scene is viewed.
`org` | Optional. Origin (centre) of the view. A numeric vector of length 3 which will be at the centre of the view.
`theta,phi` | Optional angular coordinates (in degrees) specifying the direction from which the scene is viewed: `theta` is the azimuth and `phi` is the colatitude. Ignored if `eye` is given.
`type` | Type of plot: `type="p"` for points, `type="h"` for points on vertical lines, `type="n"` for box only.
`box.front,box.back` | How to plot the three-dimensional box that contains the points. A list of graphical arguments passed to `segments`, or a logical value indicating whether or not to plot the relevant part of the box. See Details.

### Details

This is the plot method for objects of class `"pp3"`. It generates a two-dimensional plot of the point pattern `x` and its containing box as if they had been viewed from the location specified by `eye` (or from the direction specified by `theta` and `phi`).

The edges of the box at the ‘back’ of the scene (as viewed from the eye position) are plotted first. Then the points are added. Finally the remaining ‘front’ edges are plotted. The arguments `box.back` and `box.front` specify graphical parameters for drawing the back and front edges, respectively. Alternatively `box.back=FALSE` specifies that the back edges shall not be drawn.

Note that default values of arguments to `plot.pp3` can be set by `spatstat.options("par.pp3")`.

### Value

Null.

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.

### See Also

`pp3`, `spatstat.options`.

### Examples

      X <- osteo$pts[[1]]
      plot(X, main="Osteocyte lacunae, animal 1, brick 1",
           cex=1.5, pch=16)
      plot(X, type="h", main="", box.back=list(lty=3))

[Package spatstat.geom version 2.2-0 Index]