Scale axes of plot to orders of magnitude

Hi,

Just started to use Matlab in my engineering course. I've created a plot of data from a Tensile Strength test, this needs to be analysed to find certain properties of the material tested.

The plot has Stress on the y-axis. At the moment it shows 0 - 6 with x10^7 at the top. What I'd like to do is modify it so that the axis shows 0 - 60 and I can write MPa as the units then hide the label at the top. So the axis would show standard orders of magnitude x10^3 would be k (kilo) and x10^9 would be G (Giga).

Ie. Changing what would read as 5.23x10^7, to 52.3 (MPa)

Any ideas as to how I can do this?

Thanks in advance

Answer 1

[Jan]

What about simply dividing the values by 1e6?

x = rand(1, 20) * 1e7;
subplot(2,1,1);
plot(x);
ylabel('Pa');

subplot(2,1,2);
plot(x / 1e6)
ylabel('MPa')