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:
- Plot the main line with a thicker width to create the illusion of a margin.
- 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.
