average for each year

i have this Matrix, consisting of 3 columns: Column 1: long Column 2: lat Column 3: year

lets say 97x281x15,

I want to make average for each year. so i want the result is 1x15, or 15x1

or kind of look like this

YEAR / DATA AVERAGE

1995 25.786

1996 25.686

1997 25.746

1998 25.686

and so on

Thank you for your suggestions.

[Ive J]

If you're matrix has 3 columns, the size should be of size rowX3, can you upload a subset of your data (mat/delimited file)?

[sky walker]

here is my file, thanks for your time

Answer 1

[Matt J]

In recent Matlab,

mean(SSTmonth,[1,2])

In older Matlab,

mean(reshape(SSTmonth,[],15),1)

[sky walker]

thanks for your answer, im using matlab R2018a

it gave me error

Error using reshape

Product of known dimensions, 15, not divisible into total number of elements, 681425.

Error in test (line 93)

data = mean(reshape(SSTmonth,[],15),1);

[Matt J]

Apparently your array is not 97x281x15 because if so there is no way that 15 would not be divisible into the number of elelments.

[sky walker]

oh sorry, my bad. thanks for your help.