Subtract two values of an array and multiply them by a constant

2 次查看（过去 30 天）
Troth
Troth 2022-12-1
评论： Troth 2022-12-1
A = B_Oscilloscope; % Data (1007x94 array)
for k = 1:size(A,2)
[pks, locs] = findpeaks(A(:,k));
[~,ix] = sort(pks);
minpk{:,k} = [pks(ix(1:2)) locs(ix(1:2))];
maxpk{:,k} = [pks(ix(end-1:end)) locs(ix(end-1:end))];
end
maxpk{1} % View Result
minpk{1} % View Result
Hi everyone! Here is my current code:
This creates 2 1x94 arrays with my data (Minimums and Maximums), and each cell contains a 2x2 matrix (second peak and its indice, and first peak and indice). I need to go into each of those matrixes in the arrays and subtract the second entry in the first row by the second entry in the second row, and multiply it by a constant. Similary for both of the arrays I need to subtruct the 1st entry in the minmum row from the 1st in the second, the 2nd entry in the minimum row from the 2nd in the maximum row.
I hope that makes sense.

请先登录，再回答此问题。

采纳的回答

Fifteen12
Fifteen12 2022-12-1
编辑：Fifteen12 2022-12-1
Ran in:
If you put everything into an array (rather than a cell array) you can do logial indexing:
rng(1);
constant = 2;
minpk = [randi(10, 2), randi(10, 2), randi(10, 2)]
minpk = 2×6
5 1 2 2 4 5 8 4 1 4 6 7
out = constant * (minpk(1, 2:2:length(minpk)) - minpk(2, 2:2:length(minpk)))
out = 1×3
-6 -4 -4
  1 个评论
Troth
Troth 2022-12-1
For some reason turning it into an array never even occured to me and would make it much easier, thank you!

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Matrices and Arrays 的更多信息

标签

产品


版本

R2015b

Community Treasure Hunt

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

Start Hunting!

Translated by