Multiply each element of a matrix by different element from another matrix
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I am trying to fix the for loop, so I can find Fsp for each angle, but xi is not the same dimension as Fsp. Xi is based on an angle theta, 0-360. Fsp is a function of Xi, Fspo, and Giss.
massg=10^-5:10; %mass [g]
mass=massg/1000; %mass [kg]
Ra_leo=2000; Ra_geo=35786; % altitude[km]
R=6378; %Radius of Earth [km]
riss=450+R; %ISS altitude [km]
rgps=20200+R;%GPS altitude [km]
rgeo=35786+R;%GEO altitude [km]
theta=0:360; %angle [degrees]
xi=cosd(theta); %shielding factor
%Graviational focusing factor
Giss=1+Ra_leo/riss;
Ggps=1+Ra_leo/rgps;
Ggeo=1+Ra_geo/rgeo;
% Calculate Forces
F1=(2.2E3.*mass.^.306+15).^-4.38;
F2=1.3E-19.*(mass+10.*mass.^11.*mass.^2+10.*mass.^27.*mass.^4).^-0.36;
F3=1.3E-16.*(mass+10^6.*mass.^2).^-0.85;
Fspo=3.15576E7.*(F1+F2+F3);
for i=1:length(Fspo)
for j=1:length(theta)
Fsp(j)=Fspo.*xi.*Giss;
end
end
댓글 수: 3
Stephen23
2021년 7월 28일
"It's stated in the hw problem as using that"
They are extremely odd values to use. One should definitely not assume that academics do not make mistakes.
massg = 10.^(-5:1)
답변 (1개)
David Hill
2021년 7월 27일
massg=10^-5:10; %mass [g]
mass=massg/1000; %mass [kg]
Ra_leo=2000; Ra_geo=35786; % altitude[km]
R=6378; %Radius of Earth [km]
riss=450+R; %ISS altitude [km]
rgps=20200+R;%GPS altitude [km]
rgeo=35786+R;%GEO altitude [km]
theta=0:360; %angle [degrees]
xi=cosd(theta); %shielding factor
%Graviational focusing factor
Giss=1+Ra_leo/riss;
Ggps=1+Ra_leo/rgps;
Ggeo=1+Ra_geo/rgeo;
% Calculate Forces
F1=(2.2E3.*mass.^.306+15).^-4.38;
F2=1.3E-19.*(mass+10.*mass.^11.*mass.^2+10.*mass.^27.*mass.^4).^-0.36;
F3=1.3E-16.*(mass+10^6.*mass.^2).^-0.85;
Fspo=3.15576E7.*(F1+F2+F3);
%try meshgrid
[Fspo,xi]=meshgird(Fspo,xi);
Fsp=Fspo.*xi*Giss;%matrix with all the calculations
댓글 수: 2
Jan
2021년 7월 28일
"Does not work" is not useful to explain, what the problem is. Please post a copy of the ecomplete error message.
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