MATLAB: Matlab Plots Very Small dots

plot

I am facing this problem and it is getting quite annoying at the moment. Basically my matlab plots dots that are very small, it is so small that makes it hard to even see them. I used markersize property with value 10,20,10000…. and doesn't make any difference. Anyone knows what could have gone wrong ?

plot(data(i,1),data(i,2),'blue','markersize',200);

See if you can even spot it in this image 😀

Best Answer

The MarkerSize matters only, when a marker is used:

plot(1, 1, 'Marker', 'o', 'MarkerSize', 4, ...
     'MarkerFaceColor', 'b', 'MarkerEdgeColor', 'b');

The size of a single dot does not depend on the LineWidth:

axes('NextPlot', 'add', 'YLim', [0, 3]);
plot(1, 1, 'LineWidth', 4);
plot([0.5, 1.5], [2, 2], 'LineWidth', 4)

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MATLAB: Line marker specifiers duplicated – subplot legend

Are you sure you're not just seeing your plots behind the legend? Things are pretty crowded in that tiny axes. What happens if you add this:

set(get(gca,'Children'),'Visible','off')

to hide the plots in that axes.

BTW, I don't think your code actually matches the picture. Your code doesn't do "hold on" until after you plot p2. That means that plotting p2 would have overwritten p1. And yet we can see some square markers.

MATLAB: Plot non-continuous lines with markers

x = [1 2 3 4];
y = [2 3 2 1];
figure;
plot(x, y, '-bo', 'LineWidth', 3, 'MarkerSize', 20, 'MarkerFaceColor', 'w', 'MarkerEdgeColor','w');
hold on
plot(x, y, 'bo','MarkerSize', 10, 'MarkerFaceColor', [0 0 1]);
axis([0 5 0 4]);

Increase the MarkerSize in the first plot, if you want more break.

Best Answer

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MATLAB: Line marker specifiers duplicated – subplot legend

MATLAB: Plot non-continuous lines with markers

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