Integrating cell2mat array

Hello, I have the message attached below and after I tried to use a function to integrate and sum two arrays that were converted from cells in a different code, how could I solve this? and is it possible to not use a function and instead use it directly the integration in the other code with that two cell2mat arrays? I appreciate any help.

function ECC = energy_consumption(ECC_1,ECC_2)
 syms tt 
 ECC_1 = @(tt) ECC_1.*tt;
 ECC_2 = @(tt) ECC_2.*tt;

 ECC11 = int(ECC_1,5,10);
 ECC22 = int(ECC_2,0,5);
 [ECC] = ECC11 + ECC22;
end


Check for missing argument or incorrect argument data type in call to function 'int'.

Error in energy_consumption (line 6)
 ECC11 = int(ECC_1,5,10);

Error in Electrical_Power_VMP_Kp_2 (line 147)
         ECC(c) = energy_consumption(ECC_1,ECC_2)

           

[Jonas]

if you want to integrate a vector you can use cumsum()

[Edwin Espin]

thanks for your answer but I had to used each element individually

Answer 1

[Walter Roberson]

function ECC = energy_consumption(ECC_1,ECC_2)
 syms tt 
 ECC_1t = ECC_1.*tt;
 ECC_2t = ECC_2.*tt;

 ECC11 = int(ECC_1t, tt, 5,10);
 ECC22 = int(ECC_2t, tt, 0,5);
 [ECC] = ECC11 + ECC22;
end

Note that the result in ECC will be symbolic unless you convert it to double.

However, if the inputs ECC_1 and ECC_2 are numeric, then the integral of numbers times tt over a range of tt, can be calculated directly without any symbolic work:

int(NUMBER*tt, tt, A, B)

would be

(B^2-A^2)/2 * NUMBER

so

EC11 = (100-25)/2 * ECC_1;
EC21 = (25-0)/2 * ECC_2;

[Edwin Espin]

Thank you very much you answered my question