How to change (global) legend location in stackedplot?

Question

Florian Berzsenyi 2023-6-22

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https://ww2.mathworks.cn/matlabcentral/answers/1986734-how-to-change-global-legend-location-in-stackedplot

评论： Florian Berzsenyi 2023-6-27

I want to move the location of the "global" legend from top ('north') to the side ('west') in a stackedplot. The location of the legends in the subplots can be changed by calling

stackplot.AxesProperties(1).LegendLocation = 'north'; %east, west, ...

However the property LegendLocation is not available for the global legend on top and outside of all subplots. Basically, I want to move the legend from the top to the left side and change the legend orientation from horizontal (side-by-side) to vertical (top-to-bottom).

stackplot.LegendOrientation = 'vertical'; % labels are arranged top-to-bottom, legend stay at the top (north)
stackplot.LegendLocation = 'east'; % Unrecognized property 'LegendLocation' for class 'matlab.graphics.chart.StackedLineChart'.

How can I modifiy the properties of the global legend? the stackedPlot object (StackedLineChart) does not have any Childrens (an not Children() property), and I cannot find a property pointing to the handle of the legend box.

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Answer 1

Shree Charan 2023-6-27

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Hi Florian,

The location of the legend can be set using the “LegendLocation” name value parameter in the “stackedplot” function as shown in the example below.

% Assume indoors and outdoors as two variables loaded from .mat
stackedplot(indoors,outdoors, "LegendLocation", "West");

However, “LegendLocation” is not available as a parameter of “stackedplot”. To change the legend location, a workaround as shown in the below code snippet could be used.

load indoors; load outdoors;
tl = tiledlayout(2,1);
nexttile;
h = stackedplot(indoors,outdoors,'LegendVisible','off');
ax = nexttile;
co = colororder;
hold on
plot(ax,NaN,NaN,'LineStyle','none','Marker','square','MarkerFaceColor',co(1,:));
plot(ax,NaN,NaN,'LineStyle','none','Marker','square','MarkerFaceColor',co(2,:));
hold off
ax.Visible = 'off';
l = legend(ax,h.LegendLabels);
l.Layout.Tile = 'West';
tl.GridSize_I = [1 1];