How do I make tick marks longer?

I'm trying to make my tick marks on the x-axis longer so that they're easier to see. Here is my script for creating the figure and what it looks like currently:

figure;

% grey for the day, but you can change :)

semilogx(freq_axis, spectrum_day,'LineWidth', 1.5, 'Color', [0.5 0.5 0.5]);

hold on;

% black for the night

semilogx(freq_axis, spectrum_night,'LineWidth', 1.5, 'Color', [0 0 0]);

set(gca, 'fontsize', 12)

xlim([10 40000])

ylim([50 85])

xlabel('Frequency (Hz)')

ylabel('PSD (dB re 1 µPa^2/Hz)')

% inserts a legend on the plot

legend({'Daytime (06:00-19:00)', 'Nighttime (19:00-06:00)'});

legend ('Location', 'southeast', 'FontSize', 12);

legend boxoff;

hold off;

Answer 1

[Sulaymon Eshkabilov]

Use these, e.g.:

plot(x, y);
ax=gca;
ax.TickLength = [0.05 0.05]; shg

[Kirby Parnell]

Thank you! This worked for me.