Changing Axis Bounds to correct units

Hello,

I am trying to change the bounds on the axis of some subplots. The number of datapoints is 80 so the horizontal axis reads 0-80. The axis should read -0.4 to 0.4 to accurately reflect the time before and after stimulation. I do not want anything else to change, just displaying the axis in seconds instead of the index of points. Would the best way to go about this be to make a new vector for the horizontal axis and plot with that?

Code and screenshot of figure below. Whatever advice you can offer would be very helpful. Thank you!

m = length(peth.rate(:,1));

% Group 1:

[peth] = getPETH_epochs(basepath,'basename',basename,'epochs',groups.one)

figure()

imagesc(peth.rate)

colormap('jet')

title('PETH Group1')

figure()

for i=1:m

subplot(4,6,i)

plot(peth.rate(i, :))

title(['Cell ', num2str(i)])

end

xlim([-0.4 0.4])

xlabel('Time From Stim') %change axis scale from 80 to +/- 0.4 s

Answer 1

[Benjamin Thompson]

If you have a time vector, use it as the first argument to the plot function. For example:

>> t = 0:0.01:5;

>> x = 2*sin(2*pi*50/33*t);

>> figure, plot(t, x);