nnaxclik.m

感知器（Perceptron) 单层感知器神经元模型图,我们可以看出感知器的基本功能是将输入矢量转化成0或1的输出。这一功能可以通过在输入矢量空间里的作图来加以解释。

function [f,x,y] = nnaxclik(a,x,y)
%NNAXCLIK Neural Network Design utility function.

% First Version, 8-31-95.

%	[F,X,Y] = NNAXCLIK(A)
%	  A - Axis handle.
%	Returns:
%	  (X,Y) - Coordinates of last click in axis A coordinates.
%   F     - 1 if (X,Y) is in A, otherwise returns 0.
%
% NNAXCLIK(A,X,Y)
% Returns 1 if (X,Y) is in A, otherwise returns 0.

if nargin == 1
  pt = get(a,'currentpoint');
  x = pt(1);
  y = pt(3);
end
xlim = get(a,'xlim');
ylim = get(a,'ylim');
f = (x >= xlim(1)) & (x <= xlim(2)) & (y >= ylim(1)) & (y <= ylim(2));