# convert matrix steps from 1 to 0.1

3 views (last 30 days)
Aaron Rosenberger on 14 Jan 2023
Commented: Star Strider on 15 Jan 2023
Hello,
i got a task with 2 Signals. I need to plot them on the x axis with from 0 seconds to 0.1 seconds. (200000 data with a frequency of 10Khz)
i have no clue how to do that. I limited the x axis t o1000 data (value of 0 to 0.1 seconds) but the numbers are still incorect.
thanks :)

VBBV on 14 Jan 2023
Edited: VBBV on 14 Jan 2023
If you are plotting 0 to 0.1 sec using 1000 data points, the you have to divide it by frequency, 10 kHz
data./10000
data*10000
Which you are doing presently
##### 2 CommentsShowHide 1 older comment
Aaron Rosenberger on 15 Jan 2023
Thank you !:)

Star Strider on 14 Jan 2023
Use the linspace function to define the time vector —
L = 0.1; % signal Length (sec)
Fs = 1E+4; % Sampling Frequency
t = linspace(0, L*(Fs-1), Fs)/Fs; % Time Vector
format long
Ts = t(2)-t(1) % Sampling Interval
Ts =
1.000000000000000e-05
f = 10; % Signal Frequency
s = sin(2*pi*t*f); % Create Signal
figure
plot(t,s)
grid
xlabel('Time (s)')
ylabel('Amplitude')
.
##### 2 CommentsShowHide 1 older comment
Star Strider on 15 Jan 2023
My pleasure!

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