How to change the color of a graph only in a particular section?

47 visualizaciones (últimos 30 días)
Hey all,
I was just wondering if there is a way to change a particular part of a plot to another color? Suppose we have a plotted signal in BLUE and we wannan show the main response (let's say with the highest amplitude) in RED.

Respuesta aceptada

Jan
Jan el 17 de Mzo. de 2011
You can draw different lines.
t = 0:0.02:4*pi;
y = sin(t);
index = (y >= 0);
plot(t, y, 'b');
plot(t(index), y(index), 'r');
  1 comentario
Matt Tearle
Matt Tearle el 22 de Mzo. de 2011
A nice trick to remove points graphically is to set them to NaN. Eg
t = 0:0.02:4*pi;
y = sin(t);
z1 = y;
z1(y>=0) = NaN;
z2 = y;
z2(y<0) = NaN;
plot(t,z1,'b',t,z2,'r')
And while I'm here, I might as well peddle my wares: http://www.mathworks.com/matlabcentral/fileexchange/30423-conditionally-colored-line-plot

Iniciar sesión para comentar.

Más respuestas (1)

Korosh Agha Mohammad Ghasemi
Korosh Agha Mohammad Ghasemi el 7 de Dic. de 2020
%https://zil.ink/korosh -------- Ways to contact me ----------
% Korosh Agha Mohammad Ghasemi !
% Chemical Engineering at Shiraz University
x=linspace(0,2,100);
figure;
for a=[0.1 0.5 1 2 4]
y=x.^a; %The function is hypothetical
if a == 0.1 %Any color can be substituted
y=x.^a;
plot(x,y,'k') %Now choose the color
hold on
elseif a == 0.5
y=x.^a;
plot(x,y,'b') %Now choose the color
hold on
elseif a==1
y=x.^a;
plot(x,y,'g') %Now choose the color
hold on
elseif a==2
y=x.^a;
plot(x,y,'r') %Now choose the color
hold on
elseif a==4
y=x.^a;
plot(x,y,'y') %Now choose the color
hold on
grid on
end
end

Categorías

Más información sobre 2-D and 3-D Plots en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by