R: Extract Subset of Signed or Vector Measure

Extract.msr {spatstat.core} | R Documentation

## Extract Subset of Signed or Vector Measure

### Description

Extract a subset of a signed measure or vector-valued measure.

### Usage

    ## S3 method for class 'msr'
    x[i, j, ...]

### Arguments

`x` | A signed or vector measure. An object of class `"msr"` (see `msr`).
`i` | Object defining the subregion or subset to be extracted. Either a spatial window (an object of class `"owin"`), or a pixel image with logical values, or any type of index that applies to a matrix.
`j` | Subset index selecting the vector coordinates to be extracted, if `x` is a vector-valued measure.
`...` | Ignored.

### Details

This operator extracts a subset of the data which determines the signed measure or vector-valued measure `x`. The result is another measure.

### Value

An object of class `"msr"`.

### 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

`msr`

### Examples

       X <- rpoispp(function(x,y) { exp(3+3*x) })
       fit <- ppm(X ~x+y)
       rp <- residuals(fit, type="pearson")
       rs <- residuals(fit, type="score")

       rp[square(0.5)]
       rs[ , 2:3]

[Package spatstat.core version 2.0-0 Index]