How can I create a vector of markers for a scatter plot

Hey, I am trying to plot the following:

y = randi(10, 12, 3);
x = randi(10, 12, 3);
figure
scatter (x(:,1), y(:,1), 'MarkerFaceColor', [102, 215, 209]./255)
hold on
scatter (x(:,2), y(:,2), 'MarkerFaceColor', [253,174,97]./255)
scatter (x(:,3), y(:,3), 'MarkerFaceColor', [215,25,28]./255)

The 3 colours representing 3 subgroups of my data, but I'd also like to have the same Marker for each row entry. So that I have for example one Marker

[x(1,1), y(1,1)], [x(1,2), y(1,2)] and [x(1,3), y(1,3)], 
another Marker for 
[x(2,1), y(2,1)], [x(2,2), y(2,2)] and [x(2,3), y(2,3)] 
and so on.

How can I do it? Thanks

[Kundera]

Maybe I should move to a traditional plot then? But how should I define the 12 markers?

y = randi(10, 12, 3);
x = randi(10, 12, 3);
figure
plot (x(:,1), y(:,1), 'MarkerFaceColor', [102, 215, 209]./255)
hold on
plot (x(:,2), y(:,2), 'MarkerFaceColor', [253,174,97]./255)
plot (x(:,3), y(:,3), 'MarkerFaceColor', [215,25,28]./255)

[dpb]

Gots same problem either way, a linestyle is only a single value for each line so the color and marker are the same for every point along the line. See updated Answer.

Answer 1

[dpb]

...
c=[102, 215, 209;253,174,97;215,25,28]/255;
m=['o','d','s'];
figure, hold on
for i=1:size(x,2)
  scatter (x(:,i), y(:,i), 'MarkerFaceColor', c(i,:),'Marker',m(i))
end

First thought you wanted one by column and the other by row; that's not doable except by every point an object...this is ok as each row is a single object.

ADDENDUM

OK, so my first thought was right; the above is right answer to wrong Q??? :)

You're fortunate there are more than twelve possible markers already defined; you do just like for the colors, define(*) an array of their names and use it...

m={'+', 'o', '*', '.', 'x', 'square', 'diamond', 'v', '^', '>', '<', 'pentagram'};
[nr,nc]=size(x);
for i=1:nr
  for j=1:nc
    scatter(x(i,j),y(i,j),'MarkerFaceColor',c(j,:),'Marker',m{i})
  end
end

(*) I created the list by causing scatter to error on a bad call at which it echos the allowable list of names a la the list in the doc. There has to be a way to use the default marker order vector and factory defaults for the markers to automate this but I've never been able to get through the maze to figure out how to get to the information in useful manner...for all the doc there is, much of HG2 is highly opaque and almost impenetrable to the casual user who doesn't have time nor inclination to learn the details of the object hierarchy. It's like being a casual Excel user and try to write a "quick" macro--just ain't a-gonna' happen. :(

Answer 2

[Ameer Hamza]

So you mean you want to have a total of 12 different markers? You can specify the marker shape Using the third argument of scatter(). For Example

scatter (x(1,:), y(1,:), 's', 'MarkerFaceColor', [102, 215, 209]./255)

's' will produce a square marker, for row element. Similarly, for other rows, you can specify the marker shape

scatter (x(2,:), y(2,:), '+', 'MarkerFaceColor', [102, 215, 209]./255)

A complete list of markers supported by MATLAB is given here: https://www.mathworks.com/help/matlab/ref/scatter.html#btrj9jn-1-mkr.

Also, you can refer to this FEX submission to get an idea on how to draw custom markers: https://www.mathworks.com/matlabcentral/fileexchange/39487-custom-marker-plot

[Kundera]

Hi, I think you misunderstood my question. If you try to plot the few lines of code I previously have plotted, my problem is that I finally want to have for example Marker 'o' for three points (each of them have a different color). And correct, I need to do it for 12 rows.

In other words, I am not looking for a solution like this:

scatter (x(2,:), y(2,:), '+', 'MarkerFaceColor', [102, 215, 209]./255)

Because I want these points to have the same color, but each of them having a different masker.

[dpb]

That is the original problem then -- you can only do that by a single marker for every point because in HG2 each line or scatter object has only a single linestyle associated with it.