ghasem
Posts:
72
Registered:
4/13/13


Re: how do the integration?
Posted:
May 18, 2013 7:57 PM


> I can't read your f1. ========== sorry,f1 is: f1(z,theta) = I(z)*sin(theta)*exp(jk*z*cos(theta)) ========== > Then you say that z is a vector > z= linspace(0,0.7,100); > then later say that > I(z) = is a given vector same length with > z => length(I(z)) = length(z) > is I(z) a function of z? > If so, what is the definition of this function I(z) ? ========== yes,I(z) was a function from z (but no explicity).you suppose I have a vector from z and I(z) that are same size. in fact I note that I(zi) & k(zi) are correspond with zi , where i=1,2,3,...,length(z);
I have to plot f2 versus theta in polar diagram. in fact my f2 is as following (I decompose it):
f2(theta) = integral[f1(z1,theta),dz,0,z1]+integral[f1(z2,theta),dz,z1,z2]+... integral[f1(z3,theta),dz,z2,z3]+...; where: f1(z1,theta)=I(z1)*sin(theta)*exp(jk(z1)*z1*cos(theta)) f1(z2,theta)= I(z2)*sin(theta)*exp(jk(z2)*z2*cos(theta)) ... where: zi = i*delta_z = i*[0.7/length(z)] i=1,2,3,...,lenght(z) I(zi) = ith element in vector of value I(z) ; i=1,2,3,...,lenght(z) k(zi) = ith element in vector of value k ; i=1,2,3,...,lenght(z) I have all of them. now,I want to calculate and next plot f2(theta) versus theta. how integrate from f2(theta) relation and next with theta=linspace(0,2*pi,360) plot it? for example you suppose we have: m=100; z=linspace(0,0.7,m); real_k = linspace(10,100,m); imag_k = linspace(1,5,m); k = real(k)+1j*imag(k); I = linspace(12,120,m); % I= I(z) theta = linspace(0,2*pi,360); NOW,how integrate from f2 relation?

