Hi –
I just updated matlab to R2015a, and when I ran scatterhist, say an example from mathworks, I got an error.
Am I missing something? Any help/suggestion would be greatly appreciated!
Pearl
MATLAB: What’s wrong with scatterhist R2015a
scatterhist
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The histograms are normalized which means their bar heights are already a percentage.
The percentage of each bar can be found in the demo below; look for
- xHist.Values.*100
- yHist.Values.*100
Here's now to access those axes and add text elements.
% Use output to get axis handles
h = scatterhist(log(rand(1,100)),log(rand(1,100)),'Marker','o','Direction','out');% Get hist axis handles
xHist = findobj(h(2),'Type','histogram'); yHist = findobj(h(3),'Type','histogram');% increase ylim/xlim to make room of text labels
h(2).YLim(2) = h(2).YLim(2).*1.2; % 20% increase;
h(3).YLim(2) = h(3).YLim(2).*1.2; % 20% increase;% Compute bin centers and labels, add text
xBinCenter = xHist.BinEdges(2:end)-xHist.BinWidth/2;xHistLabels = compose('%.0f%%',xHist.Values.*100);text(h(2),xBinCenter, xHist.Values.*1.01, xHistLabels,... 'HorizontalAlignment', 'Right', 'VerticalAlignment', 'middle', ... 'FontSize', 8, 'Rotation', 90)yBinCenter = yHist.BinEdges(2:end)-yHist.BinWidth/2;yHistLabels = compose('%.0f%%',yHist.Values.*100);text(h(3),yBinCenter, yHist.Values*1.01, yHistLabels,... 'HorizontalAlignment', 'Right', 'VerticalAlignment', 'Middle', ... 'FontSize', 8)If you want to see the histogram axes,
axis(h(2), 'on')axis(h(3), 'on')
" when plotting data using a grouping variable the marginal histograms look all normalized to their own maxima"
That shouldn't be the case. Consider this example. Note that each group's marginal histograms have different maximum heights which shows that they are not normalized to their hown maxima, if I understand you correctly.
The axes containing the maginal histograms are normallized (axis limits are [0,1]) when you're plotting kernel density but that doesn't affect the shape of the distribution. See comment below to learn how to turn the histogram axes on conver them from normalized axes to axes that show bin counts.
load fisheriris.mat;x = meas(:,1);y = meas(:,2);clf()scatterhist(x,y,'Group',species,'Kernel','on')
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