How to change color of lines on legend?
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Mahdi Torabi
el 14 de Jul. de 2018
Comentada: Walter Roberson
el 1 de Mayo de 2020
Is there any way to change the color of lines in the legend AFTER plotting the graph(like using Edit\axes properties)?
4 comentarios
Walter Roberson
el 14 de Jul. de 2018
You could record the handle of the first of each type, and then pass that vector of handles as the first argument to legend().
Or you could do something like
L(1) = plot(nan, nan, 'b-');
L(2) = plot(nan, nan, 'r--');
legend(L, {'first case', 'second case'})
Respuesta aceptada
Mahdi Torabi
el 14 de Jul. de 2018
Editada: Matt J
el 14 de Jul. de 2018
2 comentarios
Matt J
el 14 de Jul. de 2018
This gives an error,
Error using legend>process_inputs (line 554)
Invalid argument. Type 'help legend' for more information.
Error in legend>make_legend (line 306)
[autoupdate,orient,location,position,children,listen,strings,propargs] = process_inputs(ha,argin); %#ok
Error in legend (line 259)
make_legend(ha,args(arg:end),version);
Walter Roberson
el 15 de Jul. de 2018
Turns out you just need
hold on
to be in effect, as otherwise the second plot() clears the axes.
Más respuestas (1)
Matt J
el 14 de Jul. de 2018
Editada: Matt J
el 14 de Jul. de 2018
This might be what Walter meant,
t=linspace(0,1,10);
L(1:2) = plot(t,exp(-t), 'r--',nan,nan,'k--');hold on
L(3:4) = plot(t,1-exp(-t), 'g^-',nan,nan,'m^-'); hold off
legend(L([2,4]), 'Red','Green')
2 comentarios
Walter Roberson
el 1 de Mayo de 2020
plot(nan,nan) with appropriate line style and color, once for each different thing you want to appear in the legend, recording the handle that is returned. Then when you call legend(), pass that array of handles in as the first parameter to legend()
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