如何在MATLAB中自定义离散函数图？

[poster]

我想像这样在MATLAB中绘制离散值：



stairs()和stem()绘制相似的图，但是我可以配置其中之一看起来像上面的图像吗？

http://www.mathworks.com/help/techdo...ype-stairs.gif http://www.mathworks.com/help/techdo...ttype-stem.gif



回答：

您必须自己创建情节。

%# create some random data data = randn(100,1); %# sort ascending data = sort(data(:)); %# make column vector, just in case %# count nData = length(data); %# create data to plot (open, closed circles) yData = linspace(0,1,nData-1)'; %'# SO formatting closedX = data(1:end-1); closedY = yData; openX = data(2:end); openY = yData; %# lines are from open to close with NaN for where there should be no line lineX = [closedX,openX,NaN(nData-1,1)]'; %'# SO formatting lineX = lineX(:); lineY = [closedY,openY,NaN(nData-1,1)]'; %'# SO formatting lineY = lineY(:); %# plot figure %# I like to open a new figure before every plot hold on plot(lineX,lineY,'r') plot(closedX,closedY,'ro','MarkerFaceColor','r') plot(openX,openY,'ro','MarkerFaceColor','w')

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