Legend colours are different from the plot
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
UserCJ
el 29 de Sept. de 2022
Comentada: Star Strider
el 29 de Sept. de 2022
I'm trying to create a plot for different ϕ values with respect to and x for a function(f) when . I'm also creating the legend inside the loop. The code is working, but the legend colours are not matching with the plot.
clear all;
clc;
[x,xi] = meshgrid(0:0.001:1,0:0.002:1);
b = 3;
a = 1;
nphi = 7;
phi= [0 0.4 0.8 1 1.4 1.8 2];
for p = 1:nphi
f2 = @(x,a,b) a*b*(x)./(b-(1-x));
f1 = @(x,a,b) a*b*(1-x)./(b-x);
r = @(x,xi,a,b,phi) (1-(phi./2)).*xi.*f1(x,a,b) - (phi./2).*(1-xi).*f2(x,a,b);
R = r(x,xi,a,b, phi(p));
M_phi=contour(x,xi,R,[0 0]);
figure(2)
plot(M_phi(1,2:end),M_phi(2,2:end),'Linewidth',2)
legendInfo{p} = ['$\phi= $' num2str(phi(p))];
legend(legendInfo,'interpreter','latex',Location="southeast")
hold on
end
hold off
xlabel('$x$','interpreter','latex')
ylabel('$x_i$','interpreter','latex')
Here is the output of the function and there are multiple legend values with blue and there are only two plot with blue in the plot.
Can someone please help me to get this fixed? Thanks in advance!
2 comentarios
Star Strider
el 29 de Sept. de 2022
@UserCJ — Please provide the ‘rs_a’ function. (I can’t run your code without it, and I can’t provide an appropriate reply without running it.)
Respuesta aceptada
Star Strider
el 29 de Sept. de 2022
Thank you for the ‘r’ anonymous function! I can now run your code.
The code was plotting the contours as well as the ϕ vectors. I changed the code to return only the line handles (the ‘hp{p}’ outputs of the plot calls), and added the 'DisplayName' to each plot call to avoid any ambiguity. I also ‘stepped through’ the loop with increasing values of the ‘nphi’ value to be certain that your code works as it should. It now appears to. (I also made some aesthetic tweaks.)
I’ll keep working on this if there is more to be done.
Try this —
% clear all;
% clc;
[x,xi] = meshgrid(0:0.001:1,0:0.002:1);
b = 3;
a = 1;
nphi = 7;
phi= [0 0.4 0.8 1 1.4 1.8 2];
for p = 1:nphi
f2 = @(x,a,b) a*b*(x)./(b-(1-x));
f1 = @(x,a,b) a*b*(1-x)./(b-x);
r = @(x,xi,a,b,phi) (1-(phi./2)).*xi.*f1(x,a,b) - (phi./2).*(1-xi).*f2(x,a,b);
R = r(x,xi,a,b, phi(p));
M_phi=contour(x,xi,R,[0 0]);
figure(2)
hp{p} = plot(M_phi(1,2:end),M_phi(2,2:end),'Linewidth',2, 'DisplayName',sprintf('$\\phi = %4.1f$',phi(p)));
% legendInfo{p} = ['$\phi= $' num2str(phi(p))];
% legend(legendInfo,'interpreter','latex',Location="southeast")
legend([hp{:}],'interpreter','latex',Location="southeast")
hold on
end
hold off
xlabel('$x$','interpreter','latex')
ylabel('$x_i$','interpreter','latex')
.
2 comentarios
Más respuestas (1)
vamshi sai yele
el 29 de Sept. de 2022
Editada: vamshi sai yele
el 29 de Sept. de 2022
I have tried to run the code from my end but due to insufficient initializations I couldn't run to check the issue on first hand. Solution would have been more precise if code ran from my end
However, I have couple of suggestions to set this up.
Scenario-1
Assigning the name/title to the plot and then declaring the 'legend' will display in the necessary order. Below is snipet for the same.
Scenario-2
Mentioning the titles directly in the 'legend' function directly in the intended order as shown.
Ver también
Categorías
Más información sobre Legend en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!