Calculate value based on previous row plus adjacent row

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chels19
chels19 2016-7-19
回答： Thorsten 2016-7-19
Hi,
I have a matrix of two columns and need to calculate the values of the second column based on the previous row of column 2 plus the adjacent row of column 1. For example,
Given the above matrix, cell B4 has been calculated by getting the value of cell B3 + A4. This carries on for the duration of the matrix.
I can do this quite easily in Excel but am finding it rather difficult in Matlab.
Any help/suggestions would be greatly appreciated please.

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回答（3 个）

Adam
Adam 2016-7-19
For that particular example:
B = cumsum( A )';
Azzi Abdelmalek
Azzi Abdelmalek 2016-7-19
编辑：Azzi Abdelmalek 2016-7-19
idx=1:6
out=B(idx)+A(idx+1)
Thorsten
Thorsten 2016-7-19
A = [0:5];
B = [0 1 3 6 10 15];
ind = 3:6;
C(ind) = A(ind) + B(ind-1)
M = [A' B' C']

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