Is it possible to draw a line across all plots in a stackedplot?

Question

Bryan Conklin 2020-4-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/519347-is-it-possible-to-draw-a-line-across-all-plots-in-a-stackedplot

评论： Ameer Hamza 2020-4-22

figure;
chans = 10;
for subplotN=1:chans-1 %plot first set of time-series
    x = 1:2841;
    y(:,subplotN) = randn(2841,1)*50;
end
y(:,subplotN+1) = randn(1,2841)*1e6;
stackedplot(x,y)

Is it possible to draw vertical lines across all stackedplots like in the figure below?

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Answer 1

Ameer Hamza 2020-4-20

1
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https://ww2.mathworks.cn/matlabcentral/answers/519347-is-it-possible-to-draw-a-line-across-all-plots-in-a-stackedplot#answer_427138

编辑：Ameer Hamza 2020-4-20

在 MATLAB Online 中打开

I am not sure if there is any direct option, but you can use annotation() to draw a line on the figure window such that it appears on the axes at correct locations. Following code shows an example

figure;
chans = 10;
for subplotN=1:chans-1 %plot first set of time-series
    x = 1:2841;
    y(:,subplotN) = randn(2841,1)*50;
end
y(:,subplotN+1) = randn(1,2841)*1e6;
s = stackedplot(x,y);
pos = s.Position;
xlims = s.xlim;
line_locations = [500 1000 1500 2000 2500];
line_locations_norm = interp1(xlims, cumsum(pos([1 3])), line_locations);
for i=1:numel(line_locations_norm)
    annotation('line', ...
        [line_locations_norm(i) line_locations_norm(i)], ...
        [pos(2) pos(2)+pos(4)], ...
        'Color', 'r', ...
        'LineWidth', 1);
end

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Ameer Hamza 2020-4-21

在 MATLAB Online 中打开

The stacked plot was recently introduced, and still, several options are not supported. For example, it is not possible to change the background color or make the axes invisible. I created a similar plot using subplots(). Try this

figure;
chans = 10;
for subplotN=1:chans-1 %plot first set of time-series
    x = 1:2841;
    y(:,subplotN) = randn(2841,1)*50;
end
y(:,subplotN+1) = randn(1,2841)*50;
labels = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j'};
ax = gobjects(1, 10);
for i=1:10
    ax(i) = subplot(10,1,i);
    plot(x, y(:,i));
    ax(i).Color = 'none';
    ax(i).XAxis.Visible = 'off';
    ax(i).YAxis.Visible = 'off';
    ylabel(labels{i}, 'Visible', 'on');
    ax(i).Position(4) = 0.07;
    ax(i).XLim = [min(x) max(x)];
end
pos(1:3) = ax(10).Position(1:3);
pos(4) = sum(ax(1).Position([2 4])) - ax(10).Position(2);
xlims = ax(1).XLim;
line_locations = [500 1000 1500 2000 2500];
line_locations_norm = interp1(xlims, cumsum(pos([1 3])), line_locations);
for i=1:numel(line_locations_norm)
    annotation('line', ...
        [line_locations_norm(i) line_locations_norm(i)], ...
        [pos(2) pos(2)+pos(4)], ...
        'Color', 'r', ...
        'LineWidth', 1);
end