How can i delate the same values in a vector ?

Hi

To find the zeros of the following equation, i have done the following program but sometimes it displays a repeated solution. So i want to do a program that delate the same solutions to obtain a vector that content the different solutions.

f = @(x) cos(x) * cosh(x) + 1;
for i= 1:40 
    k(i)= fzero (f, i)
end

Answer 1

[the cyclist]

Do you mean you want

unique_k = unique(k)

?

[Mallouli Marwa]

No, i mean how delate the repitition in in k ?

[Guillaume]

and what do you think unique does?

[the cyclist]

You could assign back to k:

k = unique(k)

to "get rid of the duplicates". Is that what you mean?

[Image Analyst]

Try this:

f = @(x) cos(x) * cosh(x) + 1;
for i= 1:40 
    % Get root for just this value of i.
    iRoots(i) = fzero (f, i);
end
% Throw out duplicates.
uniqueRoots = unique(iRoots)

[Mallouli Marwa]

I obtain this result

1.8751 4.6941 4.6941 7.8548 10.9955 10.9955 14.1372 17.2788 20.4204 23.5619 26.7035 29.8451 29.8451 32.9867

I want to eliminate the repeated values.

[Stephen23]

@Mallouli Marwa: You can use uniquetol.

[Mallouli Marwa]

I have this error

Undefined function 'uniquetol' for input arguments of type 'double'.

I think because i have matlab 2012a

Can you send me a loop of for that eliminate the repeated values in k.

Please help me

[Stephen23]

You could download John D'Errico's excellent FEX submssion consolidator.

[Mallouli Marwa]

I download it and then what could i do ?