Grouping elements in a matrix
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I have a matrix, lets call it M. The elements of M have values between -2 to +2. For example, M is a row matrix,
and it is given by
M = [2 1.3 1.4 1.1 -1 -0.9 -0.5 0 0.5 0.9 1.1 0.9 1.6 0.8 0.2 1.1....]
I would like to sort the elemnts according to: .
i.e., in the above example, the grouping should look like this: {2 1.3 1.4 1.1 -1}, { -0.9 -0.5 0 .5 0.9},{1.1}, { 0.9 }, {1.6},{0.8 0.2}, {1.1}..
Similarly, I would like to do this kind of sorting at each row for a matrix M(i,j).
Can anyone please help me how to do it in MATLAB?
Thanks!
4 comentarios
Matt J
el 20 de En. de 2023
Editada: Matt J
el 20 de En. de 2023
I for one do not understand the grouping criterion. Are you just grouping monotonically increasing/decreasing runs of numbers together? How should the final result be stored if there are a different number of groups in each row of M? And what do you plan to do with the groups once you've isolated them?
Fangjun Jiang
el 20 de En. de 2023
M = [2 1.3 1.4 1.1 -1 -0.9 -0.5 0 0.5 0.9 1.1 0.9 1.6 0.8 0.2 1.1];
index=and(M>-1, M<1)
For one row of data, I think the logic for grouping is to check the change of value in "index" above
Respuestas (1)
Dyuman Joshi
el 20 de En. de 2023
M = [2 1.3 1.4 1.1 -1 -0.9 -0.5 0 0.5 0.9 1.1 0.9 1.6 0.8 0.2 1.1];
index=and(M>-1, M<1);
idx=unique([1 find(diff(index)~=0)+1 numel(M)+1]);
out=mat2cell(M,1,diff(idx))
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