matlab 中 peaks(50) 是什么意思，产生什么数据，为什么了（在线等！）

看看源程序就明白了。

>> type peaks

function [xz,y,z] = peaks(arg1,arg2)
%PEAKS A sample function of two variables.
% PEAKS is a function of two variables, obtained by translating and
% scaling Gaussian distributions, which is useful for demonstrating
% MESH, SURF, PCOLOR, CONTOUR, etc.
% There are several variants of the calling sequence:
%
% Z = PEAKS;
% Z = PEAKS(N);
% Z = PEAKS(V);
% Z = PEAKS(X,Y);
%
% PEAKS;
% PEAKS(N);
% PEAKS(V);
% PEAKS(X,Y);
%
% [X,Y,Z] = PEAKS;
% [X,Y,Z] = PEAKS(N);
% [X,Y,Z] = PEAKS(V);
%
% The first variant produces a 49-by-49 matrix.
% The second variant produces an N-by-N matrix.
% The third variant produces an N-by-N matrix where N = length(V).
% The fourth variant evaluates the function at the given X and Y,
% which must be t