```
#' Return ecomplex coefficients
#'
#' Returns a dataframe with a column for each
#' coefficient from an ecomplex object.
#'
#' @param fit An object of type 'ecomplex'.
#'
#' @return A dataframe with the two coefficients.
#' @method coef ecomplex
coef.ecomplex <- function(fit){
data.frame(A = fit$A, B = fit$B)
}
#' Plot an ecomplex object
#'
#' Plot the linear fit log(epsilons) ~ log(S)
#' where epsilons are the errors at each downsample level
#' and S is the fraction of points retained at a given
#' downsample level.
#'
#' @param x The list returned by callling ecomplex()
#' @param ... Additional arguments to base plot function.
#' @method plot ecomplex
plot.ecomplex <- function(x, ...){
plot(log(x$epsilons) ~ log(x$S),
col = "chocolate2",
pch = 16,
cex = 1,
xlab = expression(log(epsilon)),
ylab = expression(log(S)),
main = paste0('Log-log fit of the errors ',
'epsilon',
' v. percent of values used S'),
...)
abline(x$fit, col = "gray10", lwd = '1.6')
}
```

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