Add value in column to previous?

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matlabuser12 2015-1-15

编辑： matlabuser12 2015-1-15

data_input=[1;1;1;1;1;1;1]
data_output=[1;2;3;4;5;6;7]

how can i achieve this with a for loop? basically take the preceding value and add it to the next one and then repeat as new values emerge.

Azzi Abdelmalek 2015-1-15

编辑：Azzi Abdelmalek 2015-1-15

a=[1 1 1 1 1]
b=cumsum(a)

matlabuser12 2015-1-15

编辑：matlabuser12 2015-1-15

for some reason i thought that summed the whole column and never tried it. thanks!

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