poster
2019-12-10, 20:48
我想像这样在MATLAB中绘制离散值：
https://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Discrete_probability_distribution.svg/200px-Discrete_probability_distribution.svg.png
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/techdoc/ref/plottype-stairs.gif http://www.mathworks.com/help/techdoc/ref/plottype-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')
更多&回答... (https://stackoverflow.com/questions/4003536)
https://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Discrete_probability_distribution.svg/200px-Discrete_probability_distribution.svg.png
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/techdoc/ref/plottype-stairs.gif http://www.mathworks.com/help/techdoc/ref/plottype-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')
更多&回答... (https://stackoverflow.com/questions/4003536)