mlbench.spirals

From mlbench v2.1-1 by Friedrich Leisch

Two Spirals Benchmark Problem

The inputs of the spirals problem are points on two entangled spirals. If sd>0, then Gaussian noise is added to each data point. mlbench.1spiral creates a single spiral.

Keywords: datagen

Usage

mlbench.spirals(n, cycles=1, sd=0)
mlbench.1spiral(n, cycles=1, sd=0)

Arguments

n: number of patterns to create
cycles: the number of cycles each spiral makes
sd: standard deviation of data points around the spirals

Value

x: input values
classes: factor vector of length n with target classes

Examples

library(mlbench)

# 1 cycle each, no noise
p<-mlbench.spirals(300)
plot(p)
#
# 1.5 cycles each, with noise
p<-mlbench.spirals(300,1.5,0.05)
plot(p)

Documentation reproduced from package mlbench, version 2.1-1, License: GPL-2

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