Why can't I edit y label and x labels in matlab subplot figures (.FIG)

I have a 3 x 2 subplots (tiledlayout) with a common Y label and X label. I want to edit the labels and change the font and fontsize size but I'm unable to edit it.

The subplots axis labels were controlled by

tle = tiledlayout(3,2,"TileSpacing","compact");

tle.XLabel.String = 'Time';

tle.YLabel.String = 'Temp';

So its a single Y and X labels for the plots.this was done sometime ago and I need to edit the figs to change the fonts and fontsize. The problem does not affect figures with only one plot except for the subplots and tiledlayout figures.

Answer 1

[Star Strider]

I’m not certain what the problem is.

You can get the handles to each subplot with:

Axsp = subplot(3,2,4); % Fourth Subplot Axes

for that particular subplot.

You then have access to that subplot’s properties:

Axsp.XLabel = 'NewLabel'

Axsp.XLabel.FontSize = 12;

Example —

figure
subplot(3,2,4)
plot((0:0.1:2*pi), sin((0:0.1:2*pi)))
xlabel('Time (s)')
ylabel('Velocity (cm/s)')

Then later —

Axsp = subplot(3,2,4);                          % Fourth Subplot Axes
Axsp.XLabel.FontSize = 12;

.

[Stephen Tete]

Dear Strider, thank you for your input. Unfortunately each plot does not have its own y and x axis label.

The subplots were controlled by

tle = tiledlayout(3,2,"TileSpacing","compact");

tle.XLabel.String = 'Time';

tle.YLabel.String = 'Temp';

So its a single Y and X labels for the plots.this was done sometime ago and I need to edit the figs to change the fonts and fontsize. The problem does not affect figures with only one plot except for the subplots and tiledlayout figures.

[Star Strider]

O.K. I thought ‘subplot’ meant subplot. They work as I described.

In tiledlayout plots, it is possible to give each tile its own axis labels, titles, and everything else. See Set Properties on the Axes for details. (Without specific information, I cannot provide specific solutions.) The only change you need is to assign specific handles to each axes object, as in that example. Then you can do essentially what I did in my subplot example.

EDIT — (121 Sep 2023 at 17:39)

figure
tle = tiledlayout(3,2,"TileSpacing","compact");
tle.XLabel.String = 'Time';
tle.YLabel.String = 'Temp';

x = linspace(0, 2*pi);
for k = 1:6
    nexttile
    plot(x, sin(k*x))
    grid
end
sgtitle('Original')

savefig(gcf, 'Test.fig')

clear all
close all

F = openfig('Test.fig');
% Q = get(F)
TL = F.Children;

sgtitle(TL,'Original With Changes')
TL.XLabel.String = 'Time (\mus)';
TL.XLabel.FontSize = 16;
TL.XLabel.FontWeight = 'bold';

.

[Stephen Tete]

The last answer works, thank you

[Star Strider]

As always, my pleasure!