Vector counting syntax help?

2 次查看(过去 30 天)
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.

采纳的回答

Star Strider
Star Strider 2021-5-9
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'})
Result = 6×2 table
Unique_Elements Count _______________ _____ 1 4 2 1 3 2 5 4 6 2 7 1
.
  4 个评论
James Baker
James Baker 2021-5-9
ok.. perfect.. after looking at it for a few... just what i needed thanks

请先登录,再进行评论。

更多回答(0 个)

类别

Help CenterFile Exchange 中查找有关 MATLAB 的更多信息

产品


版本

R2021a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by