R: Add Text Labels to Spatial Pattern

text.ppp {spatstat} | R Documentation

## Add Text Labels to Spatial Pattern

### Description

Plots a text label at the location of each point in a spatial point pattern, or each object in a spatial pattern of objects.

### Usage

    ## S3 method for class 'ppp'
    text(x, ...)

    ## S3 method for class 'lpp'
    text(x, ...)

    ## S3 method for class 'psp'
    text(x, ...)

### Arguments

`x` | A spatial point pattern (object of class `"ppp"`), a point pattern on a linear network (class `"lpp"`) or a spatial pattern of line segments (class `"psp"`).
`...` | Additional arguments passed to `text.default`.

### Details

These functions are methods for the generic `text`. A text label is added to the existing plot, at the location of each point in the point pattern `x`, or near the location of the midpoint of each segment in the segment pattern `x`.

Additional arguments `...` are passed to `text.default` and may be used to control the placement of the labels relative to the point locations, and the size and colour of the labels.

By default, the labels are the serial numbers 1 to `n`, where `n` is the number of points or segments in `x`. This can be changed by specifying the argument `labels`, which should be a vector of length `n`.

### 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

`text.default`

### Examples

      plot(cells)
      text(cells, pos=2)

      plot(Frame(cells))
      text(cells, cex=1.5)

      S <- as.psp(simplenet)
      plot(S)
      text(S)

      X <- runiflpp(5, simplenet)
      plot(X)
      text(X, pos=2, col="blue")

[Package spatstat version 1.63-3 Index]