Legend Color and plot color mismatch

Question

Zachery 2024-5-9

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2117056-legend-color-and-plot-color-mismatch

编辑： Josh 2024-5-9

I have 8 sets of data I would like to plot and want every 2 to have the same color in the plot and in the legend. I would also like every 2 plots to have the same color for example I am trying to have plots 1 & 2 to have the same color plots 3 & 4 to have another color etc. For some reason when I plot the data the color on the plots themselves is fine but the legend color is wrong. The legend for plot A1 and A2 have default colors that I never set and the rest of legend colors are skewed by 1. For example I get B1 & B2 to be green instrad of yellow, I get C1 % C2 to be yellow instead of magenta etc. I have tried 2 methods for this one using the 'legend_bonus' and setting the legend that way and another method that is shown but commented out is when using the set for the plot make the displayname as shown either wayt i get the same result. Why is this happening and how to I fix this.

Thank you

legend_bonus = {'A1 ', 'A2 ','B1 ', 'B2 ','C1 ', 'C2 ','D1 ', 'D2 '}
%
h1 = plot(zplot_Ax1, zplot_Ay1,'o-','Color','green');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'A1 ');
hold on
h1 = plot(zplot_Ax2, zplot_Ay2,'o-','Color','green');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'A2 ');
hold on
%
h1 = plot(zplot_Bx1, zplot_By1,'o-','Color','yellow');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'B1 ');
hold on
h1 = plot(zplot_Bx2, zplot_By2,'o-','Color','yellow');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'B2 ');
hold on
%
h1 = plot(zplot_Cx1, zplot_Cy1,'o-','Color','magenta');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'C1 ');
hold on
h1 = plot(zplot_Cx2, zplot_Cy2,'o-','Color','magenta');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'C2 ');
hold on
%
h1 = plot(zplot_Dx1, zplot_Dy1,'o-','Color','red');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'D1 ');
hold on
h1 = plot(zplot_Dx2, zplot_Dy2,'o-','Color','red');
set( h1, 'LineWidth', 4)%, 'DisplayName', 'D2 ');
hold on
title('title');
xlabel('X axis');
ylabel('Y axis');
ax = gca;
ax.FontSize = 20;
legend(legend_bonus);
legend('Location', 'best');

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Cris LaPierre 2024-5-9

在 MATLAB Online 中打开

Here's an attempt to create a runnable example. The issue is not reproducible here.

zplot_Ax1 = rand(1,10);

zplot_Ax2 = rand(1,10);

zplot_Bx1 = rand(1,10);

zplot_Bx2 = rand(1,10);

zplot_Cx1 = rand(1,10);

zplot_Cx2 = rand(1,10);

zplot_Dx1 = rand(1,10);

zplot_Dx2 = rand(1,10);

zplot_Ay1 = rand(1,10);

zplot_Ay2 = rand(1,10);

zplot_By1 = rand(1,10);

zplot_By2 = rand(1,10);

zplot_Cy1 = rand(1,10);

zplot_Cy2 = rand(1,10);

zplot_Dy1 = rand(1,10);

zplot_Dy2 = rand(1,10);

legend_bonus = {'A1 ', 'A2 ','B1 ', 'B2 ','C1 ', 'C2 ','D1 ', 'D2 '};

%

h1 = plot(zplot_Ax1, zplot_Ay1,'o-','Color','green','LineWidth', 4);

hold on

h1 = plot(zplot_Ax2, zplot_Ay2,'o-','Color','green','LineWidth', 4);

%

h1 = plot(zplot_Bx1, zplot_By1,'o-','Color','yellow','LineWidth', 4);

h1 = plot(zplot_Bx2, zplot_By2,'o-','Color','yellow','LineWidth', 4);

%

h1 = plot(zplot_Cx1, zplot_Cy1,'o-','Color','magenta','LineWidth', 4);

h1 = plot(zplot_Cx2, zplot_Cy2,'o-','Color','magenta','LineWidth', 4);

%

h1 = plot(zplot_Dx1, zplot_Dy1,'o-','Color','red','LineWidth', 4);

h1 = plot(zplot_Dx2, zplot_Dy2,'o-','Color','red','LineWidth', 4);

hold off

title('title');

xlabel('X axis');

ylabel('Y axis');

legend(legend_bonus);

Josh 2024-5-9

编辑：Josh 2024-5-9

it may be all the hold on commands and multiple step process of creating plots and then updating colors was giving you an undesired experience while you are running/debugging the code line by line...but the end result seems fine

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Answer 1

Josh 2024-5-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2117056-legend-color-and-plot-color-mismatch#answer_1455206

在 MATLAB Online 中打开

code seems to work fine for me so might be something more local to your machine or version of MATLAB? sorry i'm not able to provide a clearer answer to your issue

...copy & pasted, trimmed out redundant lines (no need for multiple 'hold on') and added in some random data to plot. figure attached below was produced from running the code:

legend_bonus = {'A1 ', 'A2 ','B1 ', 'B2 ','C1 ', 'C2 ','D1 ', 'D2 '}

legend_bonus = 1x8 cell array

{'A1 '} {'A2 '} {'B1 '} {'B2 '} {'C1 '} {'C2 '} {'D1 '} {'D2 '}

%

zplot_Ax1=randi(10,1,10);

zplot_Ay1=randi(10,1,10);

zplot_Ax2=randi(10,1,10);

zplot_Ay2=randi(10,1,10);

plot(zplot_Ax1, zplot_Ay1,'o-','Color','green','LineWidth',4);

hold on

plot(zplot_Ax2, zplot_Ay2,'o-','Color','green','LineWidth',4);

%

zplot_Bx1=randi(10,1,10);

zplot_By1=randi(10,1,10);

zplot_Bx2=randi(10,1,10);

zplot_By2=randi(10,1,10);

plot(zplot_Bx1, zplot_By1,'o-','Color','yellow','LineWidth',4);

plot(zplot_Bx2, zplot_By2,'o-','Color','yellow','LineWidth',4);

%

zplot_Cx1=randi(10,1,10);

zplot_Cy1=randi(10,1,10);

zplot_Cx2=randi(10,1,10);

zplot_Cy2=randi(10,1,10);

plot(zplot_Cx1, zplot_Cy1,'o-','Color','magenta','LineWidth',4);

plot(zplot_Cx2, zplot_Cy2,'o-','Color','magenta','LineWidth',4);

%

zplot_Dx1=randi(10,1,10);

zplot_Dy1=randi(10,1,10);

zplot_Dx2=randi(10,1,10);

zplot_Dy2=randi(10,1,10);

plot(zplot_Dx1, zplot_Dy1,'o-','Color','red','LineWidth',4);

plot(zplot_Dx2, zplot_Dy2,'o-','Color','red','LineWidth',4);

title('title');

xlabel('X axis');

ylabel('Y axis');

ax = gca;

ax.FontSize = 20;

legend(legend_bonus);

legend('Location', 'best');

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