Indexing inside a function

The problem i am having is i want to use fminsearch for a fuction containing every value inside my two matrixes. As i am creating a saturation line for pressure. and want it to minimize the distance between my measured Temperatures and Pressures. Basicly reduce f1-f5 to one function that i can use a singe fminsearch on. Thanks in advance!

A = 10.493056201500981;
B = 1.663772278341260e+03;
x = [A,B];



Temperature = [101.5245  106.0325  107.8912  110.6541  114.8397];

Pressure = [106.0448  122.4084  132.3047  146.6630  172.5796];




f1 = @(x) sum(abs(Pressure(1)-(1/10000)*10^(x(1)-x(2)/(273+Temperature(1)))));
f2 = @(x) sum(abs(Pressure(2)-(1/10000)*10^(x(1)-x(2)/(273+Temperature(2)))));
f3 = @(x) sum(abs(Pressure(3)-(1/10000)*10^(x(1)-x(2)/(273+Temperature(3)))));
f4 = @(x) sum(abs(Pressure(4)-(1/10000)*10^(x(1)-x(2)/(273+Temperature(4)))));
f5 = @(x) sum(abs(Pressure(5)-(1/10000)*10^(x(1)-x(2)/(273+Temperature(5)))));


Optimalisering1 = fminsearch(f1,x);
Optimalisering2 = fminsearch(f2,x);
Optimalisering3 = fminsearch(f3,x);
Optimalisering4 = fminsearch(f4,x);
Optimalisering5 = fminsearch(f5,x);

Answer 1

[Matt J]

This might be what you want,

A = 10.493056201500981;
B = 1.663772278341260e+03;
x0 = [A,B];

TemperatureKelvin = 273+[101.5245  106.0325  107.8912  110.6541  114.8397];
Pressure = [106.0448  122.4084  132.3047  146.6630  172.5796];

f= @(x) norm(   Pressure-10.^( x(1)-4-x(2)./TemperatureKelvin ) ,1) ;

[Optimalisering,fopt] = fminsearch(f,x0)

Optimalisering = 1×2

1.0e+03 * 0.0126 2.4537

fopt = 4.3992

[Adrian Langvik]

Thanks alot! worked perfectly