I would like to change existing values of parameters

Hello I am using ode15s to solve my set of differential equations. I want to see graphs with changing the original value of parameter by taking one parameter at a time and all the parameters remain same.

Answer 1

[Smith]

If you just need to get a graph, this will help you

function plotgraph
y0 = 0:10; % Initial values
for n = 1:length(y0)
    % Just copy corresponding codes to here, including complete process to get results T and Y
    [T,Y] = solver(odefun,tspan,y0(n),options); % y0(n)

    % end of coping
    plot(T,Y);hold on
    clear T Y
end
hold off

Answer 2

[Zamra Sajid]

Here is my code it is taken from three files. Acutually I want to take 50% of one parameter at a time and obtain its figure. It is calculating the value but does not aply it on figure

Parameters2; % loads parameter values from parameters.m pars = [rx ax ry ay dx0 dy0 dx1 dy1 cx cy ea es rs rya ryq rm A k];

% Define parameters

% rx = pars( 1);

% ax = pars( 2); % ry = pars( 3);

% ay = pars( 4);

% dx0 = pars( 5);

% dy0 = pars( 6);

% dx1 = pars( 7);

% dy1 = pars( 8);

% cx = pars( 9);

% cy = pars(10);

% ea = pars(11);

% es = pars(12);

% rs = pars(13);

% rya = pars(14);

% ryq = pars(15);

% rm = pars(16);

% A = pars(17);

% k = pars(18); %Scaling factor

%% Initial values

Init = [x0I, x1I, y0I, y1I, aI, sI, yqI, xmI]; % loads initial values from parameters.m

prompt ='which parameter';

 parsv=input(prompt)

 p=parsv+(parsv*0.5)

 nn=numel(parsv);

% x0I = c(1);

% x1I = c(2);

% y0I = c(3);

% y1I = c(4);

% aI = c(5);

% sI = c(6);

% ydI = c(7);

% xmI = c(8);

%% Solve ODE's the usual way

options = odeset('RelTol',1e-4,'AbsTol',1e-8); % Tolerances

for i=1:nn

    v(i)=parsv(i);

    p=parsv(i);

[ts, cs] = ode15s(@Cancer_eqs,tspan,Init,options,pars); % Solve ODE's

end

save results.mat ts cs;

%% Figures

Driver_Cancer_Figures

end