Creating an array of column vectors

Question

Basically i have a function that returns a column vector of size Z(100,1) of values. I want to run that function in a loop n times, and store each of those column vectors in a seperate index of an array, yet im having trouble doing this. This is my code that matlab does not like...

numSignals = 30;
Z = zeros(1,numSignals);

for n = 1:numSignals

    % load signal of to be reconstructed 
    Z(1,n) = loadSignal(n);

end

PengOne · Accepted Answer · 2011-11-19 22:00:17Z

2

You should probably use a matrix instead:

Z = zeros(100,numSignals);
for n=1:numSignals
    Z(:,n) = loadSignal(n);
end

Then you can call back the column vector you want with

Z(colIndex,:)

Matlab will not allow you to put anything other than a number into an entry of an array. If you really want the data structure you describe, then you will need to use a cell array instead. You can do this by

Z = cell(1,numSignals);
for n=1:numSignals
    Z{n} = loadSignal(n);
end

edited Nov 19, 2011 at 22:00

answered Nov 19, 2011 at 21:53

PengOne

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2 Comments

kbirk Over a year ago

Im getting the following error when using the cells ??? Conversion to cell from double is not possible. Error in ==> problem1 at 20 Z(n) = loadSignal(n);

kbirk Over a year ago

nvm i needed to use {} to reference the index instead of (), thank you!

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