Cumalative sum of each row of the matrix and the matrix array, separately

Hi, given the following matrix and matrix array

G= {[1 2 1 2 1 1 1 2 3 4 4 5 4 5 5 4 4 5 5 4 5 4 5 4 5 4 6 6 6 6 6 6 3 3 9 9 3 9 6 9 6 9 3 9 9 9 6 3 3 6 9 3],[ 2 3 2 2 3 2 4 5 3 3 4 4 4 5 5 4 4 5 5 3 4 6 3 6  5 3 6 3 3 4  6 6 3 6 3 3 9 3 9 9 6 9 9 3 6 9 9 3 9 9 9 6 3 9]};

M = [18.7881862745098	30.3150000000000	73.4958823529412	24.6001470588235	38.4521568627451	2.01073529411765	62.1730392156863	45.2583823529412	6.23583333333335	-11.0752000000000	4.45387254901962	10.1356862745098	7.30544117647060;
18.8560294117647	40.8409313725491	65.6118627450982	25.5301470588235	36.8114705882353	1.70803921568647	52.8283823529414	23.4644117647061	37.1732352941178	-11.7409333333331	4.62122549019627	10.2035294117649	7.77921568627470;
55.4593137254902	9.53024509803928	48.0181372549020	31.4579411764706	37.1721078431373	9.73049019607849	62.2650490196078	33.1270098039216	6.15740196078438	-0.880666666666585	12.5710784313726	18.3476960784314	15.4196568627452]

I want to calculate the cumalative sum of each row of the matrix and the matrix array, separately

Which is the most efficient way without creating a for loop?

May someone help me with an efficient code?

Answer 1

[Fabio Freschi]

For the matrix

Msum = cumsum(M,2)

For the cell array

Gsum = cellfun(@cumsum,G,'UniformOutput',false)

[Adam Danz]

In case G contains matrices,

Gsum = cellfun(@(x)cumsum(x,2),G,'UniformOutput',false)

[luca]

Hi Fabio, what I would like to obtain is just two array the contain the total cumulative sum so

Msum= [312.149, 313.687, 338.375]
Gsum= [252 , 271]

[Adam Danz]

That's a sum, not a cumulative sum.

Replace "cumsum" in Fabio's answer with "sum".

[Adam Danz]

Check out the documentation for cellfun(). It merely applies a function to each element of a cell array.

https://www.mathworks.com/help/matlab/ref/cellfun.html

[luca]

Thanks, and sorry for the type

[Fabio Freschi]

Good: Adam Danz is faster than me in the reply!

[luca]

Thanks also for documentations