I want to adjust the axis to be able to see dynamic, when I use xlsread

As you can see from the subject line, I want to adjust the axis:

This picture above is the original picture. It has dynamic characteristic. So I want see it at a glance.

The bottom code is I tried... but, just scale information is changed.

%example code
Time4 = xlsread('power_elec.xlsx','a580:a1446');

Error using xlsread
Unable to open file 'power_elec.xlsx'.
File '/users/mss.system.Qb5MDl/power_elec.xlsx' not found.

power_Cool = xlsread('power_elec.xlsx','b580:b1446');
subplot(2,1,1), plot(Time2, power_elec)
ylabel('electrical power (kW)')
xlabel('Time (s)')
axis([9.5 40 68 80]) %I tried
set(gca,'YTick',[68:0.5:78]) %I tried

If anyone knows how to adjust it, please let me know.

Answer 1

[Image Analyst]

Not exactly sure what you want but you might try semilogy or ylim or something like that.