Find Column Number in Table
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I would like to subset a table into columns before a certain variable and columns after that variable. Is there a way to locate a column number within a table? Is there a more clever way to do this?
load patients
BloodPressure = [Systolic Diastolic];
T = table(Gender,Age,Smoker,BloodPressure,'RowNames',LastName);
A = *findColNumber*(T, 'Age'); % Some function that will locate the column number of 'Age'.
T1 = T(:, 1:A);
T2 = T(:, A+1:end);
'patients' is a standard example data set included in R2014a. Entering the command 'load patients' should load the relevant data.
Thanks!
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Risposta accettata
Mohammad Abouali
il 8 Ott 2014
Table variable have property fields
you can use that to find the column number like this
find(strcmpi(T.Properties.VariableNames,'Age'))
ans =
2
4 Commenti
Image Analyst
il 8 Ott 2014
Modificato: Image Analyst
il 8 Ott 2014
Yeah, your T is slightly different than mine. No time now, but tomorrow I'll have to investigate why your code and mine behave differently and have slightly different T's. You'd think they should be the same even though they were gotten in different ways.
Actually I just figured it out. With my code, load() returns T as a structure not a table. So that makes sense.
Più risposte (1)
Image Analyst
il 7 Ott 2014
You don't need the column number. Just do
ages = T.Age;
3 Commenti
Image Analyst
il 8 Ott 2014
Modificato: Image Analyst
il 8 Ott 2014
You can get the age column like this:
T = load('patients')
ageColumn = find(ismember(fieldnames(T), 'Age'))
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