How to plot multiple lines with gray color
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TESFALEM ALDADA on 11 Aug 2021
I wanted display a plot of all multiple lines into gray colors. In addition i wanted to display title of a plot (ABC) inside the box.
For the sample code shown below, and figure attached.
Scott MacKenzie on 11 Aug 2021
Edited: Scott MacKenzie on 11 Aug 2021
Here's one way to do this:
plot(p, 'color', [.5 .5 .5], 'linewidth', 1.5); % gray lines
% put text label inside axes
ax = gca;
x = mean(ax.XLim); % middle
y = ax.YLim(1) + diff(ax.YLim) * 0.93; % near top
text(x,y,'ABC', 'horizontalalignment', 'center', 'fontsize', 12, 'fontweight', 'bold');
More Answers (2)
Esen Ozbay on 11 Aug 2021
Edited: Esen Ozbay on 11 Aug 2021
Replace plot(p) with:
plot(XAxis, p, 'Color', [0.5 0.5 0.5])
You can write any number between 0 and 1 instead of 0.5, as long as all three numbers are the same, the line will be gray. Smaller numbers will give you a darger grey, larger numbers will give you a lighter grey, [1 1 1] will give you white.
If you don't have data for XAxis, you can write
plot(1:length(p), p, 'Color', [0.5 0.5 0.5])
If you want a range of different tones of gray, you can use:
set(gca, 'ColorOrder', colormap(gray(6)))
Here, I chose 6 because you have 5 lines. Set the number to be 1 more than the number of lines you want to plot (or else the last line will be white and you will not be able to see it).
To add text inside the plot, you can use the Tool Bar:
Image Analyst on 11 Aug 2021
numPlots = height(p)
% Make a color map of grays going from pure black to 75% of white (so we can still see it)
ramp = linspace(0, 0.75, numPlots);
listOfGrayColors = [ramp; ramp; ramp]';
% Plot each plot in a different gray color.
for k = 1 : numPlots
plot(p(k, :), '-', 'Color', listOfGrayColors(k, :), 'LineWidth', 6)
caption = sprintf('%d curves in gray', numPlots);
title(caption, 'FontSize', 18);
ylabel('Y', 'FontSize', 18);
xlabel('X', 'FontSize', 18);
% Put text inside box.
yl = ylim;
xl = xlim;
% Get coordinates for the text
yt = yl(2) * 0.99;
xt = mean(xl);
caption = 'ABC';
text(xt, yt, caption, 'Color', 'r', ...
'FontSize', 24, 'FontWeight', 'bold', ...