Info

此问题已关闭。 请重新打开它进行编辑或回答。

Can you help with logic behind this problem? Iterations

1 次查看（过去 30 天）
Priya
Priya 2013-5-26
关闭： MATLAB Answer Bot 2021-8-20
I have a cell array as follows:
no. of columns = 3 and no. of rows = 800
First Column - Serial No
Second Column - Character
Third Column - Number
cell = {1 'N' 1.2 ; 2 'B' 3.2 ; 3 'D' 5.3 ; 1 'N' 1.2 ; 2 'A' 3.2 ; 3 'G' 5.3 ; 1 'E' 1.2 ; 2 'F' 3.2 ; 3 'G' 5.3 ; 1 'N' 1.2 ; 2 'C' 3.2 ; 3 'D' 5.3 ; 1 'H' 1.2 ; 2 'B' 3.2 ; 3 'D' 5.3 ; 1 'N' 1.2 ; 2 'B' 3.2 ; 3 'E' 5.3 ....................}
In second column character 'N' repeats after certain entries (rows).
I want to add the numbers in third coulmn from the row with 'N' in second column till the rows before next 'N' appears in second row.
  2 个评论
Jan
Jan 2013-5-26
"cell" is an important Matlab command. Using this term as a name of a variable shadows the built-in function and this causes troubles frequently.

此问题已关闭。

回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2013-5-26
idx1=find(cellfun(@(x) isequal(x,'N'),cell(:,2)));
idx2=[idx1(2:end)-1; size(cell,1)];
for k=1:numel(idx1)
h{k}=cellfun(@(x) x+cell{idx1(k),3},cell(idx1(k):idx2(k),3));
end
h=cell2mat(h');
cell(:,3)=num2cell(h(:));

此问题已关闭。

标签

Community Treasure Hunt

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

Start Hunting!

Translated by