creation of matrices based on output

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okoth ochola
okoth ochola 2023 年 1 月 22 日
コメント済み: Walter Roberson 2023 年 1 月 22 日
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 件のコメント
Walter Roberson
Walter Roberson 2023 年 1 月 22 日
output(i) = value
okoth ochola
okoth ochola 2023 年 1 月 22 日
@Rik thank you, this tip just gave me a clue and it worked just right. Thank you so much.

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採用された回答

Sargondjani
Sargondjani 2023 年 1 月 22 日
D(i,1) = mean(subsetBdata)
  2 件のコメント
okoth ochola
okoth ochola 2023 年 1 月 22 日
What if I wanted to do the same with the vectors, kindly give some clue @Sargondjani
Walter Roberson
Walter Roberson 2023 年 1 月 22 日
output(i, :) = rowvector
output(:, i) = columnvector

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