Linear decay function

Returns a linear weighting function to be used inside accessibility calculating functions.

This function is generic over any kind of numeric travel cost, such as distance, time and money.

decay_linear(cutoff)

Arguments

cutoff

A numeric vector. Indicates the travel cost cutoffs until which the weighting factor decays linearly. From this point onward the weight is equal to 0.

Value

A function that takes a generic travel cost vector (numeric) as an input and returns a list of weight vectors (a list of numeric

vectors, named after the arguments passed to the decay function).

See also

Other decay functions: decay_binary(), decay_exponential(), decay_logistic(), decay_power(), decay_stepped()

Examples

weighting_function <- decay_linear(cutoff = 30)

weighting_function(c(20, 35))
#> $`30`
#> [1] 0.3333333 0.0000000
#> 

weighting_function <- decay_linear(cutoff = c(30, 45))

weighting_function(c(20, 35))
#> $`30`
#> [1] 0.3333333 0.0000000
#> 
#> $`45`
#> [1] 0.5555556 0.2222222
#>