trimton | R Documentation |
Adjust the mutated individuals to the required amount of turbines.
trimton(mut, nturb, allparks, nGrids, trimForce, seed)
mut |
A binary matrix with the mutated individuals |
nturb |
A numeric value indicating the amount of required turbines |
allparks |
A data.frame consisting of all individuals of the current generation |
nGrids |
A numeric value indicating the total amount of grid cells |
trimForce |
If |
seed |
Set a seed for comparability. Default is NULL |
Returns a binary matrix with the correct amount of turbines per individual
Other Genetic Algorithm Functions:
crossover()
,
fitness()
,
genetic_algorithm()
,
init_population()
,
mutation()
,
selection()
## Create a random rectangular shapefile
library(sf)
Polygon1 <- sf::st_as_sf(sf::st_sfc(
sf::st_polygon(list(cbind(
c(0, 0, 2000, 2000, 0),
c(0, 2000, 2000, 0, 0)
))),
crs = 3035
))
## Create a uniform and unidirectional wind data.frame and plots the
## resulting wind rose
## Uniform wind speed and single wind direction
data.in <- as.data.frame(cbind(ws = 12, wd = 0))
## Calculate a Grid and an indexed data.frame with coordinates and grid cell Ids.
Grid1 <- grid_area(shape = Polygon1, size = 200, prop = 1)
Grid <- Grid1[[1]]
AmountGrids <- nrow(Grid)
startsel <- init_population(Grid, 10, 20)
wind <- as.data.frame(cbind(ws = 12, wd = 0))
wind <- list(wind, probab = 100)
fit <- fitness(
selection = startsel, referenceHeight = 100, RotorHeight = 100,
SurfaceRoughness = 0.3, Polygon = Polygon1, resol1 = 200, rot = 20,
dirspeed = wind, srtm_crop = "", topograp = FALSE, cclRaster = ""
)
allparks <- do.call("rbind", fit)
## SELECTION
## print the amount of Individuals selected.
## Check if the amount of Turbines is as requested.
selec6best <- selection(fit, Grid, 2, TRUE, 6, "VAR")
selec6best <- selection(fit, Grid, 2, TRUE, 6, "FIX")
selec6best <- selection(fit, Grid, 4, FALSE, 6, "FIX")
## CROSSOVER
## u determines the amount of crossover points,
## crossPart determines the method used (Equal/Random),
## uplimit is the maximum allowed permutations
crossOut <- crossover(selec6best, 2, uplimit = 300, crossPart = "RAN")
crossOut <- crossover(selec6best, 7, uplimit = 500, crossPart = "RAN")
crossOut <- crossover(selec6best, 3, uplimit = 300, crossPart = "EQU")
## MUTATION
## Variable Mutation Rate is activated if more than 2 individuals represent
## the current best solution.
mut <- mutation(a = crossOut, p = 0.3, NULL)
## TRIMTON
## After Crossover and Mutation, the amount of turbines in a windpark change and have to be
## corrected to the required amount of turbines.
mut1 <- trimton(
mut = mut, nturb = 10, allparks = allparks, nGrids = AmountGrids,
trimForce = FALSE
)
colSums(mut)
colSums(mut1)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.