integral.linim

0th

Percentile

Integral on a Linear Network

Computes the integral (total value) of a function or pixel image over a linear network.

Keywords
spatial, math
Usage
# S3 method for linim
integral(f, domain=NULL, ...)

# S3 method for linfun integral(f, domain=NULL, ..., delta)

Arguments
f

A pixel image on a linear network (class "linim") or a function on a linear network (class "linfun").

domain

Optional window specifying the domain of integration. Alternatively a tessellation.

Ignored.

delta

Optional. The step length (in coordinate units) for computing the approximate integral. A single positive number.

Details

The integral (total value of the function over the network) 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.

Value

A single numeric or complex value (or a vector of such values if domain is a tessellation).

See Also

linim, integral.im

Aliases
  • integral.linim
  • integral.linfun
Examples
# NOT RUN {
  # make some data
  xcoord <- linfun(function(x,y,seg,tp) { x }, simplenet)
  integral(xcoord)
  X <- as.linim(xcoord)
  integral(X)

  # integrals inside each tile of a tessellation
  A <- quadrats(Frame(simplenet), 3)
  integral(X, A)
# }
Documentation reproduced from package spatstat, version 1.55-1, License: GPL (>= 2)

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