SPLINE2

Purpose:

Performs two-dimensional cubic spline fitting.

SPLINE2(array, numrows, numcols)

array	-	An input array to interpolate.
numrows	-	An integer, the row interpolation factor.
numcols	-	Optional. An integer, the column interpolation factor. Defaults to numrows.

An array.

W1: ravel(gnorm(100, 1), 10);

W2: spline2(W1, 4);

$image\spline2pic.gif$

W2 contains a 37x37 array of interpolated values.

W1: density(spline2(rand(10), 10));

produces a 91x91 array of interpolated values plotted as a density (image) plot.

The interpolated result from SPLINE2 always passes through the original data points.

See INTERP2 for 2D linear interpolation.

See IMINTERP to perform linear or cubic spline interpolation on a 24 bit RGB image.

See IGRID to interpolate irregular XYZ data to a uniform grid.