Calling function with different variables
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Alexander Engman
le 9 Nov 2016
Commenté : Alexander Engman
le 9 Nov 2016
Hi!
I have a function which looks like this:
function dZ=undervatten(n,x,Z)
p=[5.8795547370783 14.4873921534832 257.1922990416989];
c=4800+p(1)+((p(2))*2)+((p(3))*exp(-2));
q0=(c/cosd(n));
% Z(1):=avstånd
% Z(2):=vinkel
dZ=zeros(2,1);
dZ(1)=Z(2);
dZ(2)=-q0^2*(((-p(3)/1000)*exp(-Z(1)/1000))+p(2)/1000)/((4800+p(1)+(p(2)*Z(1)/1000)+(p(3)*exp(-Z(1)/1000))^3));
end
Then I want to be able to call this function for different values of n (which is in q0).
iter=1
for n=-10:14
[X,Z]=ode45(@undervatten,[0:3000],[2000 tand(n)]);
[value(iter)=Z(end,1)
iter=iter+1
end;
n represents starting angles for a sound wave, so basically I want to be able to call the function with angles from -10:14 degrees and then save the end value of Z in a vector, to see what values (depth) the different starting angles give after a certain distance (x). How can I change my code to be able to call different values of n for each iteration?
Thank you!
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KSSV
le 9 Nov 2016
clc; clear all ;
n = -10:14 ;
X = zeros(length(n),90) ;
Z = zeros(length(n),90) ;
for i = 1:length(n)
[x,z]=ode45(@undervatten,[0:3000],[2000 tand(n(i))]);
X(i,:) = x ;
Z(i,:) = z(:,1) ;
end;
function dZ=undervatten(n,Z)
p=[5.8795547370783 14.4873921534832 257.1922990416989];
c=4800+p(1)+((p(2))*2)+((p(3))*exp(-2));
q0=(c/cosd(n));
% Z(1):=avstånd
% Z(2):=vinkel
dZ=zeros(2,1);
dZ(1)=Z(2);
dZ(2)=-q0^2*(((-p(3)/1000)*exp(-Z(1)/1000))+p(2)/1000)/((4800+p(1)+(p(2)*Z(1)/1000)+(p(3)*exp(-Z(1)/1000))^3));
end
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