Group values in a vector
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Panos Kerezoudis
am 26 Jun. 2023
Kommentiert: Panos Kerezoudis
am 1 Jul. 2023
Hi,
I have a long column vector ('trialnr', attached), whose elements are integer numbers from 1 to 55 (they index events in time-series).
I want to further concetenate the elements into groups (1-2, 3-4, 5-6, etc) so that I create blocks of rest-movement. The new vector will have the same size as the original.
Therefore, I want 1-2 to be 1, 3-4 to be 2 and so forth.
Any help would be great, thank you!
for example: if length(trialnr(trialnr==1)) is 7765 and length(trialnr(trialnr==2)) is 3548, then in the column vector these will be designated as 1 with length 7765+13548=11313.
1 Kommentar
Star Strider
am 26 Jun. 2023
I don’t see how this is going to work, since the ranges of the various elements (numbers of the individual elements) in the vector, although consecutive, are different —
LD = load('trialnr');
trialnr = LD.trialnr;
[Elements,Startidx,ic] = unique(trialnr, 'stable');
Lengths = diff([Startidx; size(trialnr,1)]);
LenvTable = table(Elements,Startidx,Lengths)
.
Akzeptierte Antwort
DGM
am 26 Jun. 2023
I'm not sure if this is what you're asking for, but:
V = [1 1 1 2 2 2 3 3 3 4 4 4 5 5 5]
V = ceil(V/2)
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