Common legend obscures tiled layout

Hello,

I have a tiledlayout(1,3) with square axis plots. When I try to add a common legend, it obscures the plots. Is there any workaround for this?

Note that this only happens with squares axes, not default.

Probably very simple but I cannot find a solution for this. Code and image attached.

I tried to upload a .mat file but the compressed data >> 5 Mb, so if someone could produce some random data and plot in tiles to present the workaround, I'd be very grateful

Cheers,

Daniel

% Preallocation for Taylor microscales

TLS_A = zeros(1,n);

% Plot - stage 2 (fit parabola)

h(5) = figure;

tiledlayout(1,n)

for i = 1:n

[xData, yData] = prepareCurveData( rii_xcorr{i}(1:(find(Rii_xcorr{i}<=yy(i),1,'first'))) , Rii_xcorr{i}(1:(find(rii_xcorr{i}>=xx(i),1,'first')))); % transforms data for curve fitting with the 'fit' function

[fitresult, gof] = fit( xData, yData, ft, opts ); % returns goodness-of-fit statistics in the structure 'gof'

nexttile(i)

plot(rii_xcorr{i},feval(fitresult,rii_xcorr{i}),'r','LineWidth',2)

hold on

plot(rii_xcorr{i},Rii_xcorr{i},'MarkerEdgeColor','k','MarkerSize',6,'Marker','o', 'LineStyle','none','LineWidth',1.5)

ylabel(sprintf(('$R_{%s}$'),V_i{i}))

xlabel('$r$ (m)')

set(gca, 'FontSize',18)

axis square

xline(xx(i),'--r')

xlim([0 round(xx(i)*3,3)])

ylim([0 1.05])

TLS_A(i) = fitresult.a;

title(sprintf(('$\\lambda_{%.1s}$ = %.3f m'),V_i{i},TLS_A(i)))

end

% Common legend

leg = legend('$R_{ii}(r)=1-\frac{r^2}{\lambda^2}$','Orientation','Horizontal');

legend boxoff

leg.Layout.Tile = 'south';

set(legend,'FontSize',14)

Answer 1

[Tushar]

Hi Daniel,

I understand that the legend you are trying to add to the plot obstructs the axes labels in a tiled layout. You can display the legend in a separate tile of the layout.

Here is a code snippet for the same:

% Define the tiled layout
t=tiledlayout('flow','TileSpacing','loose'); % 'flow' ensures that the layout can accomodate any number of axes
title(t,"output of the code");

% make a new tile using the nexttile command
nexttile;
p1=plot(rand(5));
xlabel('x-axis');
ylabel('y-axis');

% second plot
nexttile;
p2=plot(rand(5));
xlabel('x-axis');
ylabel('y-axis');

% third plot
nexttile;
p3=plot(rand(5));
xlabel('x-axis');
ylabel('y-axis');

% specify the legend
lgd = legend;
lgd.Layout.Tile=4; % in your case, this would be (n+1)
legend boxoff;
lgd.Layout.TileSpan=[1 3]; % in your case, this would be [1 n]

The above is also explained as an example in the documentation linked below:

https://www.mathworks.com/help/matlab/ref/legend.html#mw_6db8875b-f976-445d-9145-297dff7cf584

For more info on tiled layouts, refer to the documentation here:

https://www.mathworks.com/help/matlab/ref/tiledlayout.html#mw_cc4b1d69-39e0-46fd-9250-df53551bbb52

Hope this helps,

Tushar Agarwal

[Daniel]

Hi thanks for your response.

I am aware of the approach described in the documentation, however, this is not an elegant solution in that the legend takes up a disproportionate amount of the window as it occupies the space of an entire tile. I am looking for a solution where only three tiles are used and the legend remains in the 'south' location