Selecting Specific Elements in a Matrix Using Group
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Dan
el 26 de Ag. de 2022
Comentada: the cyclist
el 31 de Ag. de 2022
Hello, I am trying to select elements only from a single group from my data.
Let's say my current code is:
Height = [62; 65; 63; 70; 58; 70; 73]
Gender = [1; 1; 1; 2; 1; 2; 2] % where 1 is female and 2 is male
data_table = [Height(:), Gender(:)]
From the table, I would like to separate the male and female heights and put them into their own separate vectors so I can perform a two-sample t-test. Can anyone help me with this?
Thank you
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the cyclist
el 26 de Ag. de 2022
Editada: the cyclist
el 26 de Ag. de 2022
Height = [62; 65; 63; 70; 58; 70; 73];
Gender = [1; 1; 1; 2; 1; 2; 2]; % where 1 is female and 2 is male
data_table = [Height(:), Gender(:)];
Height_F = Height(Gender==1)
Height_M = Height(Gender==2)
or
Height_F = data_table(data_table(:,2)==1,1)
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rumin diao
el 26 de Ag. de 2022
you can use the function 'find' to locate different gender:
%current code
Height = [62; 65; 63; 70; 58; 70; 73];
Gender = [1; 1; 1; 2; 1; 2; 2]; % where 1 is female and 2 is male
data_table = [Height(:), Gender(:)];
%seperate female
female = find(Gender == 1);
heightOfFemale = Height(female);
male = find(Gender == 2);
heightOfMale = Height(male);
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the cyclist
el 31 de Ag. de 2022
find is a waste of code here, because logical indexing will handle it (which is exactly what my solution did):
%current code
Height = [62; 65; 63; 70; 58; 70; 73];
Gender = [1; 1; 1; 2; 1; 2; 2]; % where 1 is female and 2 is male
%seperate female
female = (Gender == 1);
heightOfFemale = Height(female)
male = (Gender == 2);
heightOfMale = Height(male)
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