# creation of matrices based on output

2 vues (au cours des 30 derniers jours)
okoth ochola le 22 Jan 2023
Commenté : Walter Roberson le 22 Jan 2023
Hi, I have the program below which when run gives extracted matrices with corresponding means. My problem is to tell the program to ouput all the means inside onesinlge matrix. Can someone assist me with this kindly. My input for A and B were A=[1 1 1 1 2 2 2 2 3 3 3 3]'; B=[3 4 6 7 8 9 0 12 4 5 6 8]';
%when this code is run and you input A and B which were (A=[1 1 1 1 2 2 2 2 3 3 3 3]'; B=[3 4 6 7 8 9 0 12 4 5 6 8]';)
A=input('input sample matrix\n');
B=input('enter the second matrix\n');
C=[A B];
for i=1:1:3
selectedRowsLogicalIndices = A == i;
subsetBdata = B(selectedRowsLogicalIndices)
mean(subsetBdata)
end
Below are the reulst that i got;
subsetBdata =
3
4
6
7
ans =
5
subsetBdata =
8
9
0
12
ans =
7.2500
subsetBdata =
4
5
6
8
ans =
5.7500
>>
I want all the means to be in matrix form like below;
ouput I want is below;
[5 7.25 5.75]'
or a matrix of all the subdatasets
##### 4 commentairesAfficher 3 commentaires plus anciensMasquer 3 commentaires plus anciens
okoth ochola le 22 Jan 2023
@Rik thank you, this tip just gave me a clue and it worked just right. Thank you so much.

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### Réponse acceptée

Sargondjani le 22 Jan 2023
D(i,1) = mean(subsetBdata)
##### 2 commentairesAfficher 1 commentaire plus ancienMasquer 1 commentaire plus ancien
Walter Roberson le 22 Jan 2023
output(i, :) = rowvector
output(:, i) = columnvector

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