can you help me to change this plot to nano meter scale ! i want x multiply by 10^-6

syms x;

x=1:10

 v(x)=1./(1+2*(x.^2))

 semilogy(x, v(x))

[jonas]

What is the problem?

[Aalaa Abu alrob]

x is in meter i want it in nano by multi 10^-6... when i do it i get this error

Subscript indices must either be real positive integers or logicals.

[jonas]

is the actual unit in meters, as calculated from the equation? If that is so, then just

 v(x)=(1./(1+2*(x.^2)))./10^-6

Your question makes very little sense.

[Aalaa Abu alrob]

Oh Ok ..thank for your effort ..someone understand exactly what i mean ..and i get answer for my question This thing easy just in math ..but not in matlab

[jonas]

Ok! Happy it worked out for you. Cheers!

Answer 1

[Star Strider]

If you simply want to label the x-axis, without changing anything else, try this:

t = linspace(0, 2*pi);
s = sin(t);

figure
plot(t, s)
grid
xt = get(gca, 'XTick');                             % Current Tick Values
set(gca, 'XTick',xt, 'XTickLabel',xt*1E-6)          % Current Tick Values With New Tick Labels

[Aalaa Abu alrob]

please can you apply your work in my program i can not understand it ,, but i think approximately that what i want

[Star Strider]

It should be relatively easy for you to copy these two lines from the code I posted, and put them after the plot call in your own code:

xt = get(gca, 'XTick');                             % Current Tick Values
set(gca, 'XTick',xt, 'XTickLabel',xt*1E-6)          % Current Tick Values With New Tick Labels

That is all you need to do.

[Aalaa Abu alrob]

Thank ..thank I understand and do it Thank for your effort

[Star Strider]

As always, my pleasure.