MATLAB: How to replace elements in a vector with other vectors

vectors

Hi, I am currently trying to replace the elements in a vector called 'seq1' with other vectors. seq1 has 12 numbers ranging from 1 to 9 and I am trying to replace each number with vectors of other numbers as follows:
seq1 = [1 2 3 4 5 6 7 8 9 2 4 5];
rectColor1 = [0.1 0.1 0.1];
rectColor2 = [0.15 0.15 0.15];
rectColor3 = [0.22 0.22 0.22];
rectColor4 = [0.30 0.30 0.30];
rectColor5 = [0.40 0.40 0.40];
rectColor6 = [0.55 0.55 0.55];
rectColor7 = [0.7 0.7 0.7];
rectColor8 = [0.85 0.85 0.85];
rectColor9 = [1 1 1];
for i = 1:numel(seq1)
    if seq1(i) == 1
        seq1(i) = rectColor1;
    elseif seq1(i) == 2
           seq1(i) = rectColor2;  
    elseif seq1(i) == 3
           seq1(i) = rectColor3;
    elseif seq1(i) == 4
           seq1(i) = rectColor4;
    elseif seq1(i) == 5
           seq1(i) = rectColor5;
    elseif seq1(i) == 6
           seq1(i) = rectColor6;
    elseif seq1(i) == 7
           seq1(i) = rectColor7;
    elseif seq1(i) == 8
           seq1(i) = rectColor8;
    elseif seq1(i) == 9
           seq1(i) = rectColor9;
    end
end
However, I keep getting the following error:
Unable to perform assignment because the left and right sides have a different number of elements.
How do I resolve this issue? Thanks in advance.

Best Answer

Don't create variable name dynamically like rectColor1, rectColor2, .. It always makes code more difficult. Following shows how you can easily solve the problem using a cell array
seq1 = [1 2 3 4 5 6 7 8 9 2 4 5];
rectColor{1} = [0.1 0.1 0.1];
rectColor{2} = [0.15 0.15 0.15];
rectColor{3} = [0.22 0.22 0.22];
rectColor{4} = [0.30 0.30 0.30];
rectColor{5} = [0.40 0.40 0.40];
rectColor{6} = [0.55 0.55 0.55];
rectColor{7} = [0.7 0.7 0.7];
rectColor{8} = [0.85 0.85 0.85];
rectColor{9} = [1 1 1];
seq1 = cell2mat(rectColor(seq1))
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