Scale on x-axis

I have a vector of 256 data points which is equal to 0.8 ms in total. How do I set the scale from 0 to 0.8, with steps for example of 0.2?

Answer 1

[HWIK]

Try this:

set(gca, 'XTick', 0:0.2:0.8)

[Sebastian Daneli]

Does not work, all the numbers end up to the far left.

[Star Strider]

Perhaps:

set(gca, 'XTick', 0:0.2:0.8, 'XScale','log')

.

[Sebastian Daneli]

No, does not work.

[John D'Errico]

It works quite nicely. And while I do not have your data, it is easy enough to make a plot.

x = linspace(0,0.8,256); y = sin(x);
plot(x,y,'-')
set(gca, 'XTick', 0:0.2:0.8)

If all you tell people is that something does not work, then you will need to explain just what about the plot I have created is not exactly what you requested?

[Star Strider]

@Sebastian Daneli — Please define what ‘does not work’ means in your previous Comment.

I completely failed Mind Reading 101 as an undergraduate, and as the result decided to major in Chemistry instead. It was easier.

[John D'Errico]

Yes, but mind reading is soooo much more fun!

Answer 2

[Image Analyst]

Use the xticks(0:0.2:0.8) function:

Full demo:

% Create sample data.
x = linspace(0, 0.8, 256);
period = 0.2;
y = sin(2 * pi * x / period);
plot(x, y, 'b-', 'LineWidth', 3)
grid on
% Current tick marks are 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8.
% Make them 0, 0.2, 0.4, 0.6, 0.8 using the xticks() function:
xticks(0 : 0.2: 0.8)

It replaces the old set(gca, 'XTick', 0:0.2:0.8) way of doing it (since r2016b).