array of mean from array

2 Ansichten (letzte 30 Tage)
Rodrigo Araya
Rodrigo Araya am 11 Okt. 2019
Bearbeitet: KALYAN ACHARJYA am 11 Okt. 2019
hi
I have a 400x400 array, and I need a new array for example a 10:10 in which the first value is the average of the first (0:40,0:40) values of the original array ... the 2:1 value is an average of the values from (41: 80,0:40) and so on until the las 10:10 values that will be the average (360:400,360:400)
I hope is clear
I can do one by one but i try to put this in a for
any sugestion please

Akzeptierte Antwort

Fangjun Jiang
Fangjun Jiang am 11 Okt. 2019
a=rand(400);
b=mat2cell(a,40*ones(10,1),40*ones(1,10));
c=cellfun(@mean,b,'uni',false);
d=cellfun(@mean,c,'uni',false);
e=cell2mat(d)

Weitere Antworten (1)

KALYAN ACHARJYA
KALYAN ACHARJYA am 11 Okt. 2019
Bearbeitet: KALYAN ACHARJYA am 11 Okt. 2019
One line with blockproc
data=magic(400);
result_mean=blockproc(data, [40 40], @(x) mean(x.data(:)));

Kategorien

Mehr zu Matrices and Arrays finden Sie in Help Center und File Exchange

Produkte


Version

R2019b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by