How to use stackedplot such that each graph has multiple lines AND x-axes is unevenly spaced continuous variable?

I am attempting to create a stacked plot with three stacked plots/windows. I wish to include two lines on the first plot. In addition, I would like to be able to set the x-axis to be a specific vector of times that are not evenly spaced

Answer 1

[Adam Danz]

> I wish to include two lines on the first plot.

It's easiest to work with tables or timetables when using stackedplot. If you're not already working with a table|timetable variable, convert your data to a table or timetable. Setting the VariableNames property of your table will provide axis labels to stackedplot.

% Create timetable
TT = array2timetable(rand(10,4)+[0 0 10 100],...
    'RowTimes', datetime(2020,01,01,00,00,00) + minutes((0:9)'), ...
    'VariableNames', {'A','B','C','D'})

TT = 10×4 timetable
            Time               A           B          C         D   
    ____________________    ________    ________    ______    ______

    01-Jan-2020 00:00:00     0.52566    0.055342    10.615    100.18
    01-Jan-2020 00:01:00    0.095467      0.8096    10.942    100.94
    01-Jan-2020 00:02:00     0.68824    0.035538    10.667    100.33
    01-Jan-2020 00:03:00    0.077908      0.9684    10.289    100.69
    01-Jan-2020 00:04:00     0.43765     0.34152    10.324    100.45
    01-Jan-2020 00:05:00     0.56174     0.21214    10.473    100.31
    01-Jan-2020 00:06:00     0.13971     0.39024    10.166    100.29
    01-Jan-2020 00:07:00     0.74677    0.059066    10.785    100.55
    01-Jan-2020 00:08:00     0.63332     0.30464    10.279    100.31
    01-Jan-2020 00:09:00     0.96443     0.67984     10.48     100.4

% Specify column numbers for each axis
sph = stackedplot(TT,{[1,2],3,4}); 

> I would like to be able to set the x-axis to be a specific vector of times that are not evenly spaced

I assume you mean the x-axis-ticks. If you only want to select a specific set of rows of the table, you can achieve that by indexing the rows of the table. Example: stackedplot(TT(idx,:),___)

% To specify x-ticks 
ax = findobj(sph.NodeChildren, 'Type','Axes'); % get axis handles
set(ax, 'XTick', TT.Time([1,4,6,9,10])) % set xtick
grid on % to show that xticks were applied to all axes

If you want to change the datetime format of the tick labels, use xtickformat(ax(1),'HH:mm:ss') or ax(1).XAxis.TickLabelFormat='HH:mm:ss';