findZerosMult: Find the zeros of a function of two variables
Description
Compute numerically the zeros of a function of two
variables. All free variables (all but the variable on
the right side) named in the expression must be assigned
a value via ...
Usage
findZerosMult(..., npts = 10, rad = 5, center = c(0, 0),
sortBy = "byx")
Arguments
...
arguments for values
npts
number of desired zeros to return
rad
radius around center in which to look for
zeros
center
center of search for zeros
sortBy
options for sorting zeros for plotting.
Options are 'byx', 'byy' and 'radial'. The default value
is 'byx'.
Value
A data frame of numerical values which should all result
in a value of zero when input into original function
Details
sorts points in the domain according to the sign of the
function value at respective points. Use continuity and
uniroot to find zeros between points of opposite signs.
Returns any number of points which may be sorted and
plotted according to x, y, or radial values.