please help me to solve this issue

could anyone can help me how to solve the issue

i want to add output_it(t,r,it).

where the value of output_it(t,r,it) is

output_it(:,:,1) =

   [1.0e+16 *

    0.0042    0.0633    0.0015    0.0099    0.0078;
    0.0728    0.8843    2.8774    1.0145    1.0306;
    0.7713    0.2718    0.4548    0.0162    0.0366;
    0.0166    0.0114    0.0902    0.0087    0.0093;
    0.0157    0.0375    0.0155    0.0042    0.0223;]

output_it(:,:,2) =

   [1.0e+15 *

    0.1940    0.0874    0.0481    0.1994    0.0927;
    0.1135    0.0597    0.0507    0.0373    0.4475;
    0.1277    0.9099    0.0948    0.1493    0.1414;
    0.5734    1.8800    1.2900    0.2083    0.7211;
    1.8153    2.6751    1.1576    9.5234    3.4484;]

output_it(:,:,3) =

   [1.0e+15 *

    2.5446    2.6430    1.1182    0.6000    0.0170;
    0.2950    0.2830    0.0374    0.2028    0.0216;
    0.4422    0.0303    0.0435    0.0796    0.1220;
    1.9572    0.1589    0.5177    0.3122    0.3589;
    0.1480    0.1326    0.0720    1.4849    0.0770;]

output_it(:,:,4) =

   [1.0e+14 *

    0.4818    0.3794    1.3795    0.2764    2.6247;
    1.7508    2.9381    1.9491    1.5523    4.4306;
    1.1985    0.5977    3.3783    1.4159    5.9268;
    0.8402    2.4732    0.5696    0.7225    0.8774;
    5.7730    4.4573    3.0514    7.0787    0.5669;]

output_it(:,:,5) =

   [1.0e+16 *

    0.0307    0.1335    0.2582    0.0972    0.0333;
    1.8765    3.0360    0.5547    2.9308    4.7885;
    0.8131    3.3146    0.1962    0.8415    0.1620;
    0.0345    0.0712    0.0570    0.0196    0.0715;
    0.0275    0.0775    2.1518    0.0995    0.0675;]

i need to sum output(t,r,it) so i used the command sum(output_it,5) but i unable to get the result.

Answer 1

[ANKUR KUMAR]

Your matrices are in 3D. So if you want to add all along third dimension, so use

sum(output_it,3)

Suppose, your matrix having dimension 20*30*15

sum(A,3) gives a matrix of dimension 20*30

sum(A,2) gives a matrix of dimension 20*1*15

sum(A,1) gives a matrix of dimension 1*30*15

In the last 2 results, you can delete the unit dimension using permute or squeeze

[jaah navi]

i used the command sum(output_it,3) but its not giving the correct answer.

[ANKUR KUMAR]

If your matrix contains some nan values, then you should to you use nanmean.