Why is matlab printing all number of digit.

Question

University 2024-2-7

评论： Mathieu NOE 2024-2-7

Please why matlab displaying all the number of digits on the y axis. See the attached figure, the code below produces the fiugre:

plot(xi, yinterceptr(:,1), 'r -*', LineWidth=1)

xlabel('activity, $\xi$','Interpreter','latex');

ylabel('$z$-intercept',' Interpreter','latex');

Answer 1

Mathieu NOE 2024-2-7

your y data have all same value so the plot y scale is zoomed with a huge factor, that's why you get so many decimals in the y ticks

you can force it to another format , here for example :

plot(x, y, 'r -*',  'LineWidth',1)
ax = gca;                                         
ax.YAxis.TickLabelFormat = '%.2f';

University 2024-2-7

Thank you Mathieu

Mathieu NOE 2024-2-7

my pleasure !

Answer 2

Voss 2024-2-7

"why [is] matlab displaying all the number of digits on the y axis[?]"

Because the range of the y-limits is very small, about 3e-19.

openfig('fig1.fig');

diff(ylim())

ans = 3.0006e-19

If you want, you can set the y-limits to have a larger range, e.g.:

openfig('fig1.fig');

dy = 1e-8;

ylim(-1e-6+dy*[-1 1])

University 2024-2-7

Thank you