turn a values into an array you can plot

Hello,

I need to develop an array of answers using solver and then plot these verse temperature.

My code looks like this:

T=230:10:630; %Temperature in Kelvin

R=8.3144621; %Gas constant in J/(K*mol)

x0=0.1;

for i=1:41

fun=@(X2) [10600-R.*T(i)*(log(1-X2)-log(X2))-21200.*X2];

x = fsolve(fun,x0)

end

% plot(x, T)

I need to take all the answers solved for x and put them into an array I can manipulate.

Please help.

Thank you,

Mike

Answer 1

[Star Strider]

You need to create a vector out of x:

x(i) = fsolve(fun,x0);

Since x is a scalar at each step, this will work.

Answer 2

[Walter Roberson]

Instead of assigning to x in the loop, assign to x(i)

Question: are you sure that you want T on your second axis, the y axis? The first axis is normally used for the variable being controlled, and the second axis is normally used for the variable being calculated. Which value is the "cause" and which is the "effect" ?

[Mike]

Im trying to make a phase diagram. Need to hold T constant and solve for the min of a function.