Arithmetic Operations on Measures
These group generic methods for the class "msr"
allow the arithmetic operators
+, -, * and / to be applied
directly to measures.
## S3 methods for group generics have prototypes: Ops(e1, e2)
e1, e2 |
objects of class |
Arithmetic operators on a measure A are only defined
in some cases. The arithmetic operator is effectively applied
to the value of A(W) for every spatial domain W.
If the result is a measure, then this operation is valid.
If A is a measure (object of class "msr")
then the operations -A and +A are defined.
If A and B are measures with the same dimension
(i.e. both are scalar-valued, or both are k-dimensional vector-valued)
then A + B and A - B are defined.
If A is a measure and z is a numeric value,
then A * z and A / z are defined,
and z * A is defined.
Another measure (object of class "msr").
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.
X <- rpoispp(function(x,y) { exp(3+3*x) })
fit <- ppm(X, ~x+y)
rp <- residuals(fit, type="pearson")
rp
-rp
2 * rp
rp /2
rp - rp
rr <- residuals(fit, type="raw")
rp - rrPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.