Is there a way to plot multiple graphs in one "subplot" of a stackedplot figure?

Question

JD4 2019-2-8

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https://ww2.mathworks.cn/matlabcentral/answers/443938-is-there-a-way-to-plot-multiple-graphs-in-one-subplot-of-a-stackedplot-figure

评论： JD4 2019-3-26

Say I plot data with the stackedplot function. Now I want to add fits (or for simplicity: lines) to the graphs.

starttime=datetime(2018,1,1);
endtime=datetime(2018,10,1);
A=(starttime:calmonths:endtime)';
B=rand(10,3);
tableAB=table(A,B(:,1),B(:,2),B(:,3));
stackedplot(tableAB,'XVariable','A');
%add fits/lines to each graph
line([starttime endtime],[0.4 0.4],'Color','red','LineWidth',2); %for the first graph
line([starttime endtime],[0.5 0.5],'Color','green','LineWidth',2); %for the second graph
line([starttime endtime],[0.6 0.6],'Color','blue','LineWidth',2); %for the third graph

This throws the error

Error using * (line 9)

Only Cartesian axes support non-numeric data

Of course I would not expect the lines to be attached to the right plot (since there is no parameter for that [?] / I did not set the parameter).

How do I get my lines/fits (attached to the right graph) into my stackedplot figure?

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Answer 1

Duncan Po 2019-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/443938-is-there-a-way-to-plot-multiple-graphs-in-one-subplot-of-a-stackedplot-figure#answer_364359

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stackedplot can plot multiple lines in the same axes. One way is to have a non-column matrix as one of your table variables:

x = randn(10,2); y = randn(10,1);
t = table(x,y); 
stackedplot(t)

The first axes now contains 2 lines. Another way is to set the DisplayVariables property to a nested cellstr (or cell array of cell array of chars). Then you can plot multiple data variables in the same axes.

x = randn(10,1); y = randn(10,1);
t = table(x,y); 
stackedplot(t, {{'x', 'y'}})

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JD4 2019-3-26

Thank you so much, that is exactly what I was looking for. For anyone who is also looking into this, I have one more cool trick:

When adjusting LineProperties like PlotType, Marker, MarkerSize, etc. like this

x = randn(10,2); y = randn(10,1);
t = table(x,y); 
s=stackedplot(t)
s.LineProperties(1).PlotType='scatter';
s.LineProperties(1).Marker='o';
s.LineProperties(1).MarkerSize=6;
s.LineProperties(1).MarkerFaceColor=[0 1 1];
s.LineProperties(1).MarkerEdgeColor=[0 0 0];

you change the properties of all lines (or we should rather call them graphs) in your first plot. If you want to adjust LineProperties of the lines individually, you can just add additional entries, i.e. additional cells for PlotType and Marker and additional matrix entries for MarkerSize etc. Here an example for two graphs, where the first is a scatter plot and the second is a line.

s=stackedplot(t)
s.LineProperties(1).PlotType={'scatter','plot'};
s.LineProperties(1).Marker={'o','none'};
s.LineProperties(1).MarkerSize=6;% could replace 6 with [6 3] for example 
s.LineProperties(1).MarkerFaceColor=[0 1 1];
s.LineProperties(1).MarkerEdgeColor=[0 0 0];

To change LineProperties in the second plot, change the 1 behind LineProperties to a 2.

Here is a minimal example that looks somewhat like what I originally planned:

x(:,1) = randn(1,10); 
x(:,2) = repmat(mean(x(:,1)),10,1); % takes the mean of the first column and 
                                    % fills the column with it
y = rand(10,1);
t = table(x,y); 
S=stackedplot(t);
S.LineProperties(1).Marker={'o','none'};
S.LineProperties(1).PlotType={'scatter','plot'};
S.LineProperties(1).MarkerSize=6;
S.LineProperties(1).MarkerFaceColor=[0 1 1];
S.LineProperties(1).MarkerEdgeColor=[0 0 0];