how to give param value

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juveria fatima
juveria fatima 2018-11-30
编辑： Walter Roberson 2021-11-15
how to give a,b,c,d,dt value to function
function [X1,Y1,Z1,W1] = Rossler4D(x,y,z,w,param)
a = param.a;
b = param.b;
c = param.c;
d = param.d;
dt= param.dt;
X1 = x + dt*(-y-z);
Y1 = y + dt*(x + a*y +w);
Z1 = z + dt*(b+x.*z);
W1 = w + dt*(-c.*z+d.*w);
end
% a: 0.2500
% b: 3
% c: 0.5000
% d: 0.0500
% dt: 0.0025

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采纳的回答

Walter Roberson
Walter Roberson 2018-11-30
param.a = 0.2500;
param.b = 3;
param.c = 0.5000;
param.d = 0.0500;
param.dt = 0.0025;
[X1,Y1,Z1,W1] = Rossler4D(x,y,z,w,param);
Or you could use
param = struct('a', 0.2500, 'b', 3, 'c', 0.5000, 'd', 0.0500, 'dt', 0.0025);
[X1,Y1,Z1,W1] = Rossler4D(x,y,z,w,param);
  2 个评论
juveria fatima
juveria fatima 2018-11-30
@ Walter thank you, this is what i wanted to do.
Ghofran Khaled
Ghofran Khaled 2021-11-15
could you help me please
my question here
https://ww2.mathworks.cn/matlabcentral/answers/1586514-how-can-i-create-improved-lorenz-mapping-code

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更多回答（1 个）

madhan ravi
madhan ravi 2018-11-30
编辑：madhan ravi 2018-11-30
EDITED
Read https://www.mathworks.com/help/matlab/math/parameterizing-functions.html to better understand
x=-10;
y=-6;
z=0;
w=10;
a= 0.2500;
b= 3;
c= 0.5000;
d= 0.0500;
dt= 0.0025;
[X1,Y1,Z1,W1] = Rossler4D(x,y,z,w,a,b,c,d,dt) %function call
function [X1,Y1,Z1,W1] = Rossler4D(x,y,z,w,a,b,c,d,dt) %this is how
X1 = x + dt*(-y-z);
Y1 = y + dt*(x + a*y +w);
Z1 = z + dt*(b+x.*z);
W1 = w + dt*(-c.*z+d.*w);
end

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