How to change my y-plot?

Dear all,

i have my y-plot in the number of steps what matlab computed. But I want it in seconds how do I plot it?

I mean matlab showing from 0 to 4*10^5 in my y-axis but I want to plot in 0 to 14,000 seconds in my y-axis?

I did it manually like assigning a tickmark and setting the time values but it doesn't work out when I zoomed just like half of my data... I have the values of seconds computed in a text file is that anyway possible to implement that seconds into the graph what I have ?

Answer 1

[Jan]

Matlab assumes the x-axis values 1 to 4e5 (not 0 to 4e5) automatically:

y = rand(1, 4e5);
figure;
plot(y);

But you can specify the x-axis values easily:

figure;
plot(linspace(0, 14000, numel(y)), y);

No need to define tickmarks manually and no problems at zooming.

If you have problems with plotting, "help plot" and "doc plot" will be very helpful.

[Fire]

But I have one more problem like in my final image, i have like different depth at different points which I have to be plot in y according to the depth.

Is that anyway possible, tat I can call the values from excel file to be plotted on y-axis??

[Jan]

Of course you can import the x-axis values from an Excel sheet also instead of using LINSPACE.

I do not understand the question about the "depth". Please post a small example.

[Jan]

@Elavarasan: Are you satisfied by the answer or do you have further question? Can you explain the "depth" related question again?