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How to set specific colors in margin of errorbars line?

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I use errorbar funtion in order to put errorbars in a plot. I would like to set a different color to the margin of the line.
I use
errorbar(x,y,z,'r-','LineWidth',3)
I would like for example to have red line with black margins..
Could you help me?

Answers (1)

Ayush
Ayush on 1 Jul 2024
Hi,
You can achieve a red line with a black margin effect by plotting the error bars and the main line separately and then customizing the properties of each. The two steps involved are:
  1. Plot the main line with a thicker width to create the illusion of a margin.
  2. Plot the error bars using the desired colour.
Refer to an example code below for better understanding:
x = 1:10;
y = rand(1, 10);
z = 0.1 * rand(1, 10);
% Plot the main line with a thicker width for the margin
hLine = plot(x, y, 'k-', 'LineWidth', 5); % Black margin
hold on;
% Plot the main line with the desired color
plot(x, y, 'r-', 'LineWidth', 3); % Red line
% Plot the error bars
hErrorbar = errorbar(x, y, z, 'k', 'LineStyle', 'none'); % Black error bars
% Adjust the appearance of the error bars
hErrorbar.LineWidth = 1.5;
hold off;
The plot function is used twice to create the main line with a black margin and a red line. The errorbar function plots the error bars with black colour, and the LineWidth property is adjusted to create the desired appearance.

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