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Accesing structure using a function

Asked by Mario Prinetti on 2 May 2019
Latest activity Edited by Stephen Cobeldick on 7 May 2019
Dear all,
I have a function that needs to treat data coming from a structure, and I want to have several inputs indicating which branch of the structure is the one to be treated:
function total = totalCampus(campus,building,year,var)
total=getfield(campus,(year),(building),(var))
end
This is just the first line of the function, where I want to call the specific column of the table in the structure, using dynamic fieldnames, but I can't manage. Any clue?
best regards,
Mario

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1 Answer

Answer by Adam
on 2 May 2019
 Accepted Answer

total = campus.( building ).( year ).( var );
should work fine, assuming campus is your struct and that is a branch of the struct.

  3 Comments

function total = totalCampus(campus,year,type,var)
switch campus
case 1
building={'sabatini','quevedo','betancourt','biblioAud','benet'};
total=zeros(34492,length(building));
for n=1:length(building)
total(:,n)=leganes.(year).building{n}.(type).(var);
end
total=nansum(total(total>0),'all');
This is my actual code, used to add up all values of the selected variable (it ahhas a second case for another campus). The issue is it doesn't seem to read the year correctly (the name of the structure branch is a2017 for example). once I type tot=totalCampus(1,a2017,total,PotenciaActivaTotal_kW); it tells me that the function or variable a2017 is undefined
Is it defined?
"once I type tot=totalCampus(1,a2017,total,PotenciaActivaTotal_kW); it tells me that the function or variable a2017 is undefined "
You are typing those inputs without single quotes, which tells MATLAB that they are variable/function/class/etc. names. You need to use single quotes to define character vectors.

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