`sim_complex.Rd`

Simulate complex numbers with given distributions for the modulus and the argument and real numbers with given distributions for the absolute value and the sign. Some of the values may be partially or fully specified.

sim_complex(abs, arg, absgen = "runif", absarg = list(0, 1), arggen = runif, argarg = list(-pi, pi), ...) sim_real(abs, sign, signprob = 0.5, absgen = "runif", absarg = list(0, 1), ...)

abs | vector of absolute values. |
---|---|

sign | vector of signs (1 or -1). |

signprob | probability for a positive sign. |

arg | vector of arguments (of complex numbers). |

absgen | generator for the absolute values, a function or a character string naming a function. |

absarg | arguments for |

arggen | generator for the arguments of the complex numbers, a function or a string naming a function. |

argarg | arguments for |

… | not used, simplifies the call from |

`sim_real`

simulates real numbers by simulating separately their
absolute values and signs. `sim_complex`

simulates complex
numbers by simulating separately their moduli and arguments.

Both functions replace `NA`

's in argument `abs`

with values
simulated by the function specified by `absgen`

. Arguments for
`absgen`

are specified by the (possibly named) list
`absarg`

.

Similarly, `sim_complex`

replaces `NA`

's in argument
`arg`

with values simulated according to `arggen`

and
`argarg`

.

Further, `sim_real`

replaces `NA`

's in argument `sign`

with a random sample of ones and minus ones, where the probability for
the positive value is `signprob`

.

Only `NA`

entries in `abs`

, `arg`

and `sign`

are
filled with simulated values, the remaining entries are left
unchanged. This means that some (and even all) values may be
specified partially or completely.

`abs`

is combined with `arg`

or `sign`

to create the
result. These arguments are expected to be of matching shape and
length but this is not enforced and the usual recycling rules will
apply if this is not the case (not recommended to rely on this).

The default range for the (complex) argument is (-pi,pi).

for `sim_real`

, a vector of real numbers

for `sim_complex`

, a vector of complex numbers

Currently the shape of the result for `sim_real`

is the same as
that of argument `abs`

. But `sim_complex`

always returns a
vector. Probably this inconsistency should be removed.

`sim_numbers`

which offers more flexible interface to
these functions.

## x[1] is fixed to 1, x[2] is negative with random magnitude: x <- sim_real(c(1,NA,NA,NA), c(1, -1, NA, NA)) ## z[1] fixed to 1, the remaining elements of z ## have random magnitude and fixed arguments: z <- sim_complex(c(1,NA,NA,NA), c(0, pi/2, pi, -pi/2)) ## without restrictions sim_complex(rep(NA,4))#> [1] -0.7159858-0.1564620i 0.3306168-0.6981991i 0.7150111-0.5036719i #> [4] -0.0585658-0.1648462isim_real(rep(NA,4))#> [1] -0.40353812 0.06366146 0.38870131 -0.97554784## moduli unrestricted; arguments restricted sim_complex(rep(NA,4), c(0, pi/2, pi, -pi/2))#> [1] 0.98053967+0.0000000i 0.00000000+0.7415215i -0.05144628+0.0000000i #> [4] 0.00000000-0.5302125i