It doesn't count right

It count my 0,00xxxxxx number as 0 and doesn't count anything at all, any idea how to solve it ?

[Torsten]

Maybe you'll have to change the output format ?

If this doesn't help, please include your code.

Best wishes

Torsten.

[Jan]

Yes.

Please explain at first, what "it" is, what "count" means, the meaning of the bunch of x's, and of course post the relevant part of the code.

[Stanislav Kotzev]

I tried but nothing happens, the code is:

alpha=0,0039;
beta=0,022;
H=202;
h=0:1:202;
gama=alpha+beta*i;
Uin=1058,53206;
U=Uin*abs(cosh(gama*(H-h)))/abs(cosh(gama*H));

Answer 1

[Guillaume]

It is really hard to figure out what the problem is when the statement includes vague words such as it without specifying what it is, or nothing happens when clearly something happens.

Is your problem that you're trying to use , as a decimal mark. As far as I know matlab only supports . as the decimal mark, regardless of your locale settings. Therefore,

alpha = 0.0339;
%and so on

Answer 2

[Jan]

alpha=0,0039;
beta=0,022;

Matlab uses the dot as decimal separator. So you have to change this to

alpha = 0.0039;
beta  = 0.022;

Your code evaluates:

alpha = 0

and then as next command

0039;

which does nothing, but is not an error also.

Answer 3

[John D'Errico]

Hmm. I wonder if you are using MATLAB wrongly. At least, the version of MATLAB that you happen to be using. For example, when I type this in MATLAB:

alpha=0,0039;
alpha =
     0

I get alpha is EXACTLY zero. Not 0.00329. As you can see, I'm using a decimal point, not a comma.

So for me, MATLAB sees the comma as a separator between statements here.

But, from your name and your use of numbers like 0,0039, I will guess that your expectation is that MATLAB should see that as a number. MATLAB uses a numeric format chosen to match the expectation. I looked in the preferences for my US version, and I did not see one that would allow me to change that behavior, except in how it would export numbers placed onto the system clipboard.

My guess is you happen to be using a version of MATLAB, perhaps obtained here in the states, that would require you to write those lines as:

alpha=0.0039;
beta=0.022;

Uin=1058.53206;