mlbench.circle {mlbench} | R Documentation

## Circle in a Square Problem

### Description

The inputs of the circle problem are uniformly distributed on the `d`-dimensional cube with corners {+-1}. This is a 2-class problem: The first class is a `d`-dimensional ball in the middle of the cube, the remainder forms the second class. The size of the ball is chosen such that both classes have equal prior probability 0.5.

### Usage

    mlbench.circle(n, d=2)

### Arguments

`n` | number of patterns to create
`d` | dimension of the circle problem

### Value

Returns an object of class `"mlbench.circle"` with components

`x` | input values
`classes` | factor vector of length `n` with target classes

### Examples

    # 2d example
    p<-mlbench.circle(300,2)
    plot(p)
    #
    # 3d example
    p<-mlbench.circle(300,3)
    plot(p)

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