Vector counting syntax help?
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James Baker
le 9 Mai 2021
Commenté : Star Strider
le 9 Mai 2021
if i have a vector A = [1 1 1 1 2 3 3 5 5 5 5 6 6 7]... its alreay been sortecand only increases.. i want to create a 2nd vector based off A say called B that would have the count of each unique values in the A vector... so, B = [3 1 2 3 2 1] .. because there are 3 1's and 1 2 and 2 3's, etc etc. i just cant seem to get the suntax correct... please help.
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Star Strider
le 9 Mai 2021
Try this —
A = [1 1 1 1 2 3 3 5 5 5 5 6 6 7];
[Au,~,ix] = unique(A,'stable');
Count = accumarray(ix,1);
Result = table(Au(:), Count(:), 'VariableNames',{'Unique_Elements','Count'})
.
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