% -*- texinfo -*-
% @deftypefn {Function File} {[@var{x}, @var{p}, @var{n}, @var{k}, @var{d}] =} unmkpp (@var{pp})
%
% Extract the components of a piece-wise polynomial structure @var{pp}.
% These are as follows:
%
% @table @asis
% @item @var{x}
% Sample points.
% @item @var{p}
% Polynomial coefficients for points in sample interval. @code{@var{p}
% (@var{i}, :)} contains the coefficients for the polynomial over
% interval @var{i} ordered from highest to lowest. If @code{@var{d} >
% 1}, @code{@var{p} (@var{r}, @var{i}, :)} contains the coefficients for
% the r-th polynomial defined on interval @var{i}. However, this is
% stored as a 2-D array such that @code{@var{c} = reshape (@var{p} (:,
% @var{j}), @var{n}, @var{d})} gives @code{@var{c} (@var{i}, @var{r})}
% is the j-th coefficient of the r-th polynomial over the i-th interval.
% @item @var{n}
% Number of polynomial pieces.
% @item @var{k}
% Order of the polynomial plus 1.
% @item @var{d}
% Number of polynomials defined for each interval.
% @end table
%
% @seealso{mkpp, ppval, spline}
% @end deftypefn