How to add trip_sum to table without error?

Hey so my table populates without tripsum but when i go to add tripsum i get error stating- Error using ()

The number of table variables in an assignment must match.

For each car i count battery usage in 5 min increments and want to sum usage for each trip, then move to next trip. I do get correct value for my last trip(j value) in workspace so unsure why it wont attribute. thanks

for j = 1:tripsedan
trip_num = j;


   duration= round(tripdistances(j)/fivemindist); 
   endtriptime= round(departuretime + duration);
   nextdeparturetime= round(endtriptime + randi([6 48 ]));


  trip_sum = 0;
   for k=departuretime:endtriptime
       
     
       x=temperaturesinterval(k);

%   check potential trip usage
         usage(k)= (p1*x^2 + p2*x + p3) * fivemindist; 
         trip_sum = trip_sum + usage(k);  
%  check state of charge after each trip
         SOCLevel=(((SOCLevel/100)*Sedan_Battery(btType)-trip_sum)/100);
%           added=0;
%            if SOCLevel<= 20
% %                charge car fully or partially
%                 for l = endTripTime:nextdeparturetime-1
%                    demand(l) = charger(chType)/12;
%                    added= added +demand(l);
%                 end
%             SOCLevel= ((SOCLevel/100)*Sedan_Battery + added)/Sedan_Battery*100;
%            end

   
   end  
 
% trip_table(j,:)= table(trip_num, departuretime, endtriptime, tripdistances(j), ...
% 'VariableNames', {'TripNum', 'DepartureTime', 'EndTripTime', 'TripDistance'});
trip_table(j,:)= table(trip_num, departuretime, endtriptime, tripdistances(j), trip_sum, ...
'VariableNames', {'TripNum', 'DepartureTime', 'EndTripTime', 'TripDistance', 'TripSum'});
 departuretime= round(nextdeparturetime);
   end
end
end

[Amir Hussain]

coded out table works, just adding seems issue

Answer 1

[Walter Roberson]

You have an existing trip_table variable that was built with a different number of variables.

I suggest you build your table once, and then make assignments along the lines of

trip_table(end+1,:) = {trip_num, departuretime, endtriptime, tripdistances(j), trip_sum};

When you assign a cell array into an existing table, the contents of the cells are matched to the corresponding variable by position.