how do i change units of xaxis and yaxis without changing the plot??

Hi. I have a capacitance per unit length Vs meters plot. How can I change x-axis units to micrometers and y-axis units to pico Farads per meter. I actually want to get rid of 10^-11 and write appropriate units in y-label

Answer 1

[Adam]

If you are using a sufficiently new Matlab then you can use

hAxes.XAxis.Exponent = 0;

for an axes handle, hAxes, to get rid of the exponent.

If you want to change the x data of the plot you can either keep hold of the plot handle when you plot it and change the XData, e.g.

figure; h = plot( 1:10, rand(1,10 ) );
h.XData = h.XData * 100 % or h.XData = 1:10:100 or whatever

or you can change the tick labels using

hAxes.XTickLabel

though I wouldn't recommend that as it creates a disconnect between what is reported on your axes and what you see if you use the data cursor or other code that uses the domain of the graph.

Answer 2

[Sultan alkhteeb]

it is very easy to get rid of 10^-11,,,

f = 0:df:fs-df; % this is your frequency

t = 0:dt:duration-dt; % and this is your time

t1=t/1e-9 % if you want to chage it to NANO sec .

f1=f*1e-6 % if you want to chage it to Mega Hz.

figure(1)

plot(t1, CH1(1:N));

xlabel('Time (ns)'); % if you want the time to be in Micro t1=t/1e-6 and so on ,,,,

plot(f1, CH2(1:N));

xlabel('Frequency (MHz)'); % f1=f*1e-6 ,, or f1=f*1e-3 for kHz