uniroot_all function

Finds many (all) roots of one equation within an interval

The function uniroot_all searches the interval from lower to upper for several roots of a function f with respect to its first argument.

uniroot_all(
  f,
  interval,
  lower = min(interval),
  upper = max(interval),
  tol = .Machine$double.eps^0.2,
  maxiter = 1000,
  trace = 0,
  n = 100,
  ...
)

Arguments

• f: the function for which the root is sought. This function needs to accept a vector of input values.
• interval: a vector containing the end-points of the interval to be searched for the root.
• lower: the lower end point of the interval to be searched.
• upper: the upper end poitn of the interval to be searched.
• tol: the desired accuracy (convergence tolerance). Passed to function uniroot.
• trace: integer numberl if positive, tracing information is produced. Higher values giving more details. Passed to function uniroot.
• n: number of subintervals in which the root is sought.
• ...: additional named or unnamed arguments to be passed to f (but beware of parital matching to other arguments).

Returns

a vector with the roots found in the interval.

Details

this is a copy taken from the package rootSolve but imported here to avoid dependency

See Also

uniroot

Author(s)

Karline Soetaert karline.soetaert@nioz.nl - original . Copied by Simon Bond.