spatstat (version 1.46-1)

integral.msr: Integral of a Measure

Description

Computes the integral (total value) of a measure over its domain.

Usage

"integral"(f, domain=NULL, ...)

Arguments

f
A signed measure or vector-valued measure (object of class "msr").
domain
Optional window specifying the domain of integration. Alternatively a tessellation.
...
Ignored.

Value

A numeric value (for a signed measure) or a vector of values (for a vector-valued measure).

Details

The integral (total value of the measure over its domain) is calculated.

If domain is a window (class "owin") then the integration will be restricted to this window. If domain is a tessellation (class "tess") then the integral of f in each tile of domain will be computed.

For a multitype measure m, use split.msr to separate the contributions for each type of point, as shown in the Examples.

See Also

msr, integral

Examples

Run this code
   fit <- ppm(cells ~ x)
   rr <- residuals(fit)
   integral(rr)

   # vector-valued measure
   rs <- residuals(fit, type="score")
   integral(rs)

   # multitype
   fitA <- ppm(amacrine ~ x)
   rrA <- residuals(fitA)
   sapply(split(rrA), integral)

   # multitype and vector-valued
   rsA <- residuals(fitA, type="score")
   sapply(split(rsA), integral)

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