How can i fill a marker with color?

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Philipp Mueller
Philipp Mueller on 26 Sep 2016
Hi,
I have two plots. How can I fill the marker in plot2? At the moment it is empty. With: plot(x(i),y(i),'s','MarkerFaceColor',colors(ID(i),:));???
Input_Matrix = textread('Rainflow_Input1.txt')
[zeilen,spalten]=size(Input_Matrix)
x = Input_Matrix(:,1)
y = Input_Matrix(:,2)
z = Input_Matrix(:,3)
colorbar('location','Manual', 'position', [0.93 0.1 0.02 0.81]);
a=30
scatter(x,y,a,z,'filled')
colorbar;
%http://stackoverflow.com/questions/15814068/pcolor-in-scatter-plot-matlab
[dummy ID]=sort(z);
colors=colormap(jet(length(z)));
figure
for i=1:length(z)
plot(x(i),y(i),'s','Color',colors(ID(i),:));
hold on
end
  1 Comment
Philipp Mueller
Philipp Mueller on 26 Sep 2016
with -> plot(x(i),y(i),'s','MarkerFaceColor',colors(ID(i),:)); ???

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Answers (3)

Walter Roberson
Walter Roberson on 26 Sep 2016
Yes, you can use MarkerFaceColor to fill markers.
Note that only one 'MarkerFaceColor' will be paid attention to for any plot() call, even if you are requesting to plot multiple items.
As you are not drawing lines, you should consider instead using scatter(). You can specify the color of each point for scatter, and use the 'filled' option.

Forrest Mobley
Forrest Mobley on 19 Aug 2018
It's also doable to just choose whatever predefined color as when choosing what your marker color is.
For example: plot(x,y,'or','MarkerFaceColor','r');
This will give your marker face and marker outline the same color, red.
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MathWorks Support Team
MathWorks Support Team on 17 Mar 2021
If you are only plotting markers, and not any lines, you can create a plot with filled markers by calling the scatter function with the 'filled' option.
scatter(x,y,[],colors,'filled','s')
If you need to use the plot function, you can set the MarkerFaceColor property. If you want the edges of the markers to match, set the MarkerEdgeColor property to the same color values.
figure
hold on
for i=1:length(z)
plot(x(i),y(i),'s','MarkerFaceColor',colors(ID(i),:), ...
'MarkerEdgeColor',colors(ID(i),:));
end
hold off
If you want the markers to have the same color as the axes background color, set the MarkerFaceColor property to 'auto' to fill the markers with that color.
Also, you don’t need to call hold on at each iteration of the loop. You can call it once just before plotting. Call hold off when you’re all done.

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