A simple utility function that transforms any vector into a single character
string, where the former vector elements are separated by commas. This is can
be useful, in some circumstances, for feeding a series of constant numeric
values to phasePortrait (see examples). For most applications
we recommend, however, to use phasePortrait's parameter
moreArgs instead.
vector2String(vec)
| vec | The (usually real or complex valued) vector to be converted. |
|---|
A string, where the former vector elements are separated by commas, enclosed between "c(" and ")".
Other helpers:
xlimFromYlim(),
ylimFromXlim()
# Make a vector of 77 complex random numbers inside the unit circle n <- 77 a <- complex(n, modulus = runif(n), argument = 2*pi*runif(n)) a <- vector2String(a) print(a) # Use this for portraying a Blaschke product # \donttest{ # x11(width = 9.45, height = 6.30) # Screen device commented out # due to CRAN test requirements. # Use it when trying this example op <- par(mar = c(1, 1, 1, 1), bg = "black") n <- 77 a <- complex(n, modulus = runif(n), argument = 2*pi*runif(n)) a <- vector2String(a) FUN <- paste("vapply(z, function(z, a){ return(prod(abs(a)/a * (a-z)/(1-Conj(a)*z))) }, a =", a, ", FUN.VALUE = complex(1))", sep = "") phasePortrait(FUN, pType = "p", axes = FALSE, xlim = c(-3, 3), ylim = c(-2.0, 2.0), nCores = 2) # Max. two cores allowed on CRAN # not a limit for your own use par(op) # }