How can I create a solid line from the data within a for loop?
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Hi all,
I want to plot efficiency 'Eff' on the y-axis against current density 'i' on the x-axis. However, because the data is in the for loop I cannot produce a solid line. Can someone please explain how I can fix this?
clear all
close all
clc
%I-U curve
T = 80;
r1 = 4.45153e-5;
r2 = 6.88874e-9;
r = r1 + (r2*T);
s = 0.33824;
d1 = -3.12996e-6;
d2 = 4.47137e-7;
p = 30;
t1 = -0.01539;
t2 = 2.00181/T;
t3 = 15.24178/T^2;
t = t1 + t2 + t3;
U_rev = 1.229;
A = 0.25;
f11 = 478645.74;
f12 = -2953.15;
f21 = 1.03960;
f22 = -0.00104;
for i = 0:0.2:100
U = 1.48/(U_rev + ((r1+d1)+(r2*T)+(d2*p))*(i*50) + (s * log((t*(i*50))+1)));
F = (((i*50)^2)/(f11+(f12*T)+(i*50)^2)*(f21+(f22*T)));
Eff = F*U;
plot(i,Eff,'.'); hold on
end
采纳的回答
k =1;
for i = 0:0.2:100
U(k) = 1.48/(U_rev + ((r1+d1)+(r2*T)+(d2*p))*(i*50) + (s * log((t*(i*50))+1)));
F(k) = (((i*50)^2)/(f11+(f12*T)+(i*50)^2)*(f21+(f22*T)));
Eff(k) = F(k)*U(k);
k = k+1;
end
plot(0:0.2:100,Eff);
Use an index to store outputs into variables
更多回答（2 个）
Fangjun Jiang
2022-12-12
编辑：Fangjun Jiang
2022-12-12
Typical way is to store the data in an array and then plot it once.
T=0:0.2:100;
Eff=zeros(size(T));
for k=1:length(T)
i=T(k);
U = 1.48/(U_rev + ((r1+d1)+(r2*T)+(d2*p))*(i*50) + (s * log((t*(i*50))+1)));
F = (((i*50)^2)/(f11+(f12*T)+(i*50)^2)*(f21+(f22*T)));
Eff(k) = F*U;
end
plot(T,Eff)
Either use an animatedline object or create the line before the loop starts and add points to its XData and YData properties inside the loop. I'll demonstrate the former technique.
h = animatedline;
axis([0 360 -1 1])
for thepoint = 0:360
addpoints(h, thepoint, sind(thepoint))
pause(0.01)
end
I used pause here but you could also use drawnow.
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