MATLAB: What does “Lv” mean? I don’t know what the L is for.

lengthMATLABmatrizsomatório

Below is how I wanted to solve the problem, below that is how it is supposed to be solved. What is that "Lv"? Length?

v= v( v>0 )

x= length( v )

totalsum = sum( v .* sum( A( :, x) ) )

Given a matrix A( m x n ) and a vector v( 1 x n )

Best Answer

"logical" . A logical vector is built and used to index arrays

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DO NOT label your variables Nf1, Nf2, .... Var1, Var2, ...

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

Use cell arrays like this:

NfC = cell(1, size(Nf,2));
trwalosc = cell(size(NfC));
TRWALOSC = cell(size(NfC));  %You sure you want to label 2 variable with similar names, different by caps? 
for j = 1:size(Nf, 2)
    NfC{j} = Nf(:,j);
    trwalosc{j} = NfC{j}(ind(:, j));
    TRWALOSC{j} = trwalosc{j}(1);    
end

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In the line

T = readtable('Dailydata_(i).csv', 'PreserveVariableNames', true);

MATLAB does not recognize i as a numeric value. You need to use sprintf(). For example, if file name is Dailydata_(1).csv then write

T = readtable(sprintf('Dailydata_(%d).csv', i), 'PreserveVariableNames', true);

Best Answer

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