Fdvec.m - Revision history

Kuprov: Update function See also links and function index membership

2026-06-06T18:36:38Z

Update function See also links and function index membership

Kuprov: Rename Arguments section heading to Parameters

2026-06-05T17:48:52Z

Rename Arguments section heading to Parameters

Kuprov: Spot-edit Spinach function page first-line NOTOC and template fields

2026-06-05T17:27:52Z

Spot-edit Spinach function page first-line NOTOC and template fields

Kuprov: Normalise sequential blank lines

2026-04-25T11:25:07Z

Normalise sequential blank lines

Admin at 14:08, 16 August 2018

2018-08-16T14:08:02Z

Admin at 14:04, 16 August 2018

2018-08-16T14:04:03Z

Admin at 14:02, 16 August 2018

2018-08-16T14:02:35Z

Admin: Created page with "Performs arbitrary-order finite-difference differentiation of a user-supplied row or column vector. Uses central finite-difference stencils inthe middle and sided stencils of ..."

2015-11-02T16:29:04Z

Created page with "Performs arbitrary-order finite-difference differentiation of a user-supplied row or column vector. Uses central finite-difference stencils inthe middle and sided stencils of ..."

New page

Performs arbitrary-order finite-difference differentiation of a user-supplied row or column vector. Uses central finite-difference stencils inthe middle and sided stencils of the same order of accuracy on the sides. Syntax:

dx=fdvec(x,npoints,order)

Parameters:

x - column or row vector to be differentiated

npoints - number of points in the finite difference
stencil

order - order of the derivative required

@@ Line 20: / Line 20: @@
 ==See also==
-[[fdmat.m]], [[fdlap.m]], [[fdhess.m]], [[fdkup.m]], [[fdweights.m]], [[fftdiff.m]], [[fourdif.m]], [[fourlap.m]]
+[[fdmat.m]], [[fdlap.m]], [[fdhess.m]], [[fdkup.m]], [[fdweights.m]], [[fftdiff.m]], [[fourdif.m]], [[fourlap.m]], [[cgsppm2ang.m]], [[corrfun.m]], [[fpl2phan.m]], [[fpl2rho.m]], [[hydrodynamics.m]], [[interpmat.m]], [[oscillator.m]], [[overwound.m]], [[phan2fpl.m]], [[points2mult.m]], [[qform2sph.m]], [[qxspen_kernel.m]], [[spden.m]], [[Hyperfine_shift_module]], [[Kernel_utilities]]
 ''Version 2.2, authors: [[Ilya Kuprov]]''

@@ Line 6: / Line 6: @@
       dx=fdvec(x,npoints,order)
-==Arguments==
+==Parameters==
      x       - column or row vector to be differentiated

← Older revision		Revision as of 17:27, 5 June 2026
Line 1:		Line 1:
−	{{DISPLAYTITLE:fdvec.m}}	+	{{DISPLAYTITLE:fdvec.m}} __NOTOC__
	Performs arbitrary-order finite-difference differentiation of a user-supplied row or column vector. Uses central finite-difference stencils in the middle and sided stencils of the same order of accuracy on the sides.		Performs arbitrary-order finite-difference differentiation of a user-supplied row or column vector. Uses central finite-difference stencils in the middle and sided stencils of the same order of accuracy on the sides.

@@ Line 21: / Line 21: @@
 ==See also==
 [[fdmat.m]], [[fdlap.m]], [[fdhess.m]], [[fdkup.m]], [[fdweights.m]], [[fftdiff.m]], [[fourdif.m]], [[fourlap.m]]
 ''Version 2.2, authors: [[Ilya Kuprov]]''

@@ Line 1: / Line 1: @@
-{{DISPLAYTITLE:function.m}}
+{{DISPLAYTITLE:fdvec.m}}
-Reasonable description of what the function does and how.
+Performs arbitrary-order finite-difference differentiation of a user-supplied row or column vector. Uses central finite-difference stencils in the middle and sided stencils of the same order of accuracy on the sides.
 ==Syntax==
-      function call string
+      dx=fdvec(x,npoints,order)
 ==Arguments==
-     argument      - description of the argument
+    x       - column or row vector to be differentiated
-−
-     argument      - description of the argument
+    npoints - number of points in the finite difference
-                     description of the argument
+              stencil
 ==Outputs==
-      output  - description of the output
+    dx      - column or row vector with the derivative
 ==See also==
-Links to related functions.
+[[fdmat.m]], [[fdlap.m]], [[fdhess.m]], [[fdkup.m]], [[fdweights.m]], [[fftdiff.m]], [[fourdif.m]], [[fourlap.m]]
-''Version 2.2, authors: [[Author 1]]''
+''Version 2.2, authors: [[Ilya Kuprov]]''

@@ Line 1: / Line 1: @@
-{{DISPLAYTITLE:fdvec.m}}
+{{DISPLAYTITLE:function.m}}
-Calculates finite difference weights for numerical derivatives, including order 0, which amounts to interpolation.
+Reasonable description of what the function does and how.
 ==Syntax==
-      w=fdweights(target_point,grid_points,max_order)
+     function call string
 ==Arguments==
-      target_point - the point at which the derivative
+      argument      - description of the argument
-                    is required
+      argument      - description of the argument
-      grid_points  - the points at which the function
+                     description of the argument
 ==Outputs==
-      w            - finite difference coefficient array
+      output  - description of the output
-                    with the coefficients for the succes-
-                    sive derivatives in rows
+     output  - description of the output
 ==Examples==
-Point weights for central schemes on a three-point stencil, where the value is required at the centre:
+A description of what is done in the example below:
-  >> fdweights(0,[-1 0 1],2)
+     % Comment
-  ans =
+     % Comment
+      matlab code
-The three rows are for interpolation, first derivative and second derivative respectively.
+==Notes==
 ==See also==
-[[fdmat.m]], [[fdlap.m]], [[fdhess.m]], [[fdkup.m]], [[fdweights.m]], [[fftdiff.m]], [[fourdif.m]], [[fourlap.m]]
+Links to related functions.
-''Version 2.2, authors: Bengt Fornberg, [[Ilya Kuprov]]''
+''Version 2.2, authors: [[Author 1]]''