For loop if else if statement not working
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I am trying to make a graph where two different sets of equations need to be used at different h values but i keep getting the error code "Undefined function 'h' for input arguments of type 'double'"
can anyone correct my code and explain to me why this is wrong? Thanks
g=32.2;
R=1716;
a=-0.003563;
x = g./(a.*R);
y = g/R;
T_SSL=518.69;
rho_SSL=0.002377;
hv = 1:50:45000;
for i = 1:numel(hv)
if (h(i) <= 36152)
% lower then 36152
h(i) = hv(i);
T(i) = T_SSL+a*h(i);
rho(i) = rho_SSL*((T(i)/T_SSL)^-(x+1));
TH(i) = 6647034.077*rho(i);
elseif(h(i) > 36152)
% for over 36152 ft
h(i) = hv(i);
T(i) = 389.7;
rho(i) = rho_SSL*exp(-(y/T(i))*h(i));
TH(i) = 6647034.077*rho(i);
end
end
plot (h,TH);
xlabel('Altitude (ft)');
ylabel('Power Avaiable (hp)');
title('Power Avaiable vs Altitude');
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Answers (2)
KSSV
on 16 Feb 2018
g=32.2;
R=1716;
a=-0.003563;
x = g./(a.*R);
y = g/R;
T_SSL=518.69;
rho_SSL=0.002377;
hv = 1:50:45000;
for i = 1:numel(hv)
if (hv(i) <= 36152)
% lower then 36152
h(i) = hv(i);
T(i) = T_SSL+a*h(i);
rho(i) = rho_SSL*((T(i)/T_SSL)^-(x+1));
TH(i) = 6647034.077*rho(i);
elseif(hv(i) > 36152)
% for over 36152 ft
h(i) = hv(i);
T(i) = 389.7;
rho(i) = rho_SSL*exp(-(y/T(i))*h(i));
TH(i) = 6647034.077*rho(i);
end
end
plot (h,TH);
xlabel('Altitude (ft)');
ylabel('Power Avaiable (hp)');
title('Power Avaiable vs Altitude');
Variable should be hv not h. Code need to be tuned a lot.
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