How do I put all my vectors through the same operation?

It sounds like a very simple task, yet I cannot figure out how to do this. I have got 18 vectors, and I'm trying to divide them all by the same number, without typing it all out manually. I was thinking about using a for-loop but the vectors don't contain any index. Any advice? Thanks in advance! Here are all the vectors. I'm trying to divide them by the given constant ' l ':

l = 0.50 *10^-3;%m%

Tf1 = [36.91 34.10]; %s%

Tr1 = [11.04 9.75];

Tf2 = [25.75 27.60 27.53 23.87];

Tr2 = [3.78 3.31 2.22 2.94];

Tf3 = [19.37 22.03 25.12 21.75];

Tr3 = [5.66 6.68 7.78 8.15];

tf4 = [33.19 35.00 38.50 31.12];

Tr4 = [13.91 10.94 14.37 13.22];

Tf5 = [16.00 17.16 17.53 17.60];

Tr5 = [10.97 12.03 12.12 12.28];

Tf6 = [11.63 11.20];

Tr6 = [11.18 12.16];

Tf7 = [18.10 20.25];

Tr7 = [31.00 28.35];

Tf8 = [17.59 21.72 25.15 21.66];

Tr8 = [9.59 9.68 9.03 8.18];

Tf9 = 24.32;

Tr9 = 8.61;

[Stephen23]

"I have got 18 vectors"

And that is the cause of your problems:

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

"Any advice?"

Store them all in a cell array. Then use very basic indexing. Easy. Don't make it more complex than that.

Answer 1

[Voss]

l = 0.50e-3;%m%

% store the vectors Tf1, Tr1, Tf2, ..., Tr9, in a 9x2 cell array
% (so that, e.g., what you called Tf6 is now T{6,1} and 
% what you called Tr8 is now T{8,2}, etc.):
T = { ...
    [36.91 34.10],             [11.04 9.75]; ...
    [25.75 27.60 27.53 23.87], [3.78 3.31 2.22 2.94]; ...
    [19.37 22.03 25.12 21.75], [5.66 6.68 7.78 8.15]; ...
    [33.19 35.00 38.50 31.12], [13.91 10.94 14.37 13.22]; ...
    [16.00 17.16 17.53 17.60], [10.97 12.03 12.12 12.28]; ...
    [11.63 11.20],             [11.18 12.16]; ...
    [18.10 20.25],             [31.00 28.35]; ...
    [17.59 21.72 25.15 21.66], [9.59 9.68 9.03 8.18]; ...
    24.32,                     8.61; ...
    };

% divide each vector by the constant l (and store it back in T):
for ii = 1:numel(T)
    T{ii} = T{ii}/l;
end