interp1q.m File Reference

Functions
	yi (range,:)
	if (length(szx)==2 &&any(szx==1)) yi
	!assert (interp1q(xp, yp,[min(xp)-1;max(xp)+1]),[NA;NA])
	!assert (interp1q(xp, yp, xp), yp, 100 *eps)
	!assert (isempty(interp1q(xp, yp,[])))
	!assert (interp1q(xp, yp, xi), yi)
	!assert (interp1q(xp,[yp, yp], xi),[yi, yi])
	!assert (interp1q(xp, yp,[xi, xi]),[yi, yi])
	!assert (interp1q(xp,[yp, yp],[xi, xi]), cat(3,[yi, yi],[yi, yi]))
Variables
function	yi
	nx = size (x, 1)
	szy = size (y)
	ny = szy (1)
	nc = prod (szy (2 : end))
	y = reshape (y, ny, nc)
	szx = size (xi)
	xi = xi (:)
	range = find (xi >= x (1) & xi <= x (nx))
	dy = y (2 : ny, :) - y (1 : ny - 1, :)
	dx = x (2 : nx) - x (1 : nx - 1)
	idx = lookup (x, xi, "lr")
	s = (xi - x (idx)) ./ dx (idx)
endif endfunction!shared	xp
endif endfunction!shared	yp = sin(2*pi*xp/5)
endif endfunction!shared yi	!xp = [0:2:10].'
	!xi = [-1
	!yi = interp1 (xp,yp,xi)

---

Function Documentation

!assert	(	interp1q(xp,[yp, yp],[xi, xi])	,
		cat(3,[yi, yi],[yi, yi])
	)

!assert

(

interp1q(xp, yp,[xi, xi])

)

!assert

(

interp1q(xp,[yp, yp], xi)

)

!assert	(	interp1q(xp, yp, xi)	,
		yi
	)

!assert

(

isempty(interp1q(xp, yp,[]))

)

!assert	(	interp1q(xp, yp, xp)	,
		yp	,
		100 *	eps
	)

!assert

(

interp1q(xp, yp,[min(xp)-1;max(xp)+1])

)

if

(

length(szx)

= =2 &&any(szx==1)

)

yi	(	range	,
		:
	)

---

Variable Documentation

!xi = [-1

endif endfunction !shared yi !xp = [0:2:10].'

!yi = interp1 (xp,yp,xi)

dx = x (2 : nx) - x (1 : nx - 1)

dy = y (2 : ny, :) - y (1 : ny - 1, :)

idx = lookup (x, xi, "lr")

nc = prod (szy (2 : end))

nx = size (x, 1)

ny = szy (1)

range = find (xi >= x (1) & xi <= x (nx))

s = (xi - x (idx)) ./ dx (idx)

szx = size (xi)

szy = size (y)

endif endfunction !shared xi = xi (:)

endif endfunction !shared xp

y = reshape (y, ny, nc)

else yi

Initial value:

 interp1q (x, y, xi)
  x = x(:)

yp = sin(2*pi*xp/5)