signal = plane2d(p, x, y, {signal}) : Planar function
iFunc/plane2d Planar function (fit 2D function/model)
signal = p(1)*x+p(2)*y+p(3)
plane2d([s1 s2]) creates a model with specified slopes
plane2d([ parameters ]) creates a model with specified model parameters
input: p: plane2d model parameters (double array)
p = [ 'Slope_X' 'Slope_Y' 'Background' ]
or 'guess'
x: axis along rows (double)
y: axis along columns (double)
signal: when values are given, a guess of the parameters is performed (double)
output: signal: model value
ex: signal=plane2d([1 2 .5 .2 .3 30 .2], -2:.1:2, -3:.1:3); or plot(plane2d);
Version: Aug. 22, 2017
See also iData, iFunc/fits, iFunc/plot, gauss
(c) E.Farhi, ILL. License: EUPL.