matlab cascadeplot函数源代码

Matlab中的cascadeplot函数源代码如下：

function cascadeplot(varargin)
%CASCADEPLOT  Plot multiple data sets with individual scaling
%   CASCADEPLOT(X1,Y1,COLOR1,...,XN,YN,COLORN) plots N data sets on a
%   single plot, with each data set scaled to fit optimally in the
%   vertical direction.  X1...XN must be vectors of the same length.  Y1...YN
%   must be matrices, with the same number of rows as X1...XN, giving the
%   corresponding Y values.  Each row of Y1...YN is treated as a separate
%   data set.  COLOR1...COLORN are optional color strings used to specify
%   the line color of each data set (see the PLOT function for details).
%
%   Example:
%       x = 0:0.1:10;
%       y1 = sin(x);
%       y2 = cos(x+pi/4);
%       y3 = sin(x+pi/2);
%       cascadeplot(x,y1,'r',x,y2,'g',x,y3,'b');
%
%   See also PLOT.

% Validate the input arguments
[x,y,args,nargs] = parseinputs(varargin{:});

% Determine the optimal scaling for each data set
for i = 1:nargs/3
    y1 = y(:,i);
    ymin = min(y1(:));
    ymax = max(y1(:));
    dy = ymax - ymin;
    y1 = (y1 - ymin) / dy;
    y(:,i) = y1 + i - 1/2;
end

% Plot the data sets
for i = 1:nargs/3
    plot(x,y(:,i),args{i});
    hold on;
end

% Clean up the plot
hold off;
set(gca,'YTick',1:nargs/3);
set(gca,'YTickLabel',{});
set(gca,'YLim',[0 nargs/3]+0.5);
set(gca,'Box','off');
set(gca,'TickDir','out');
xlabel('X');
ylabel('Data Set');

这个函数接受多个参数，其中X1到XN是x轴数据，而Y1到YN是对应的y轴数据。每个Yi必须是一个矩阵，其中每行是一个数据集。参数COLOR1到COLORN是可选的，用于指定每个数据集的颜色。

在函数内部，首先根据输入数据计算出每个数据集的最优垂直缩放比例。然后，数据集逐个绘制在图中，并对图进行精细调整，以便更好地展示多个数据集。