Plot only markers without lines

Hello,

I have two matrices V(NXM) and g(NXM). I wish to plot each column in V (x axis) against each column in g(y axis). I must have the data plotted only as markers i.e without lines.

I tried 'LineStyle','none' but I didn't managed to "turn on" the marker stuff. I do not want to specify manually what markers to use beacuse I have many columns (which I will also plot on separate figures).

I thought that matlab can plot the markers and once it finished all the markers it will change color and restart the marker order.

so can I do this?

Thanks, Rami

Answer 1

[Friedrich]

Hi,

sounds like you are looking for the scatter or scatter3 function.

[Arnab Joardar]

I specifically needed it to create a dummy marker for the legend.

I used Scatter to create the marker of my desired size, but the legend marker associated with it was way too small to be visible.

So I used plot to make a dummy marker, to be used only in legend, like this.

I needed to set a custom marker edge thickness, but that was also tide to the line thickness. So, in the legend for this dummy marker, a narrow line also showed up along with my desired marker. I needed to get rid of that line in the legend and keep only the marker.

Answer 2

[TheStranger]

Hi!

I know it was like 4 years ago, but anyway.

You need to specify 'LineStyle', 'none'

[Samuel Abimbola Ogunfuye]

Thanks for answering. Just what I needed

[Quinn Mulligan]

Thanks for answering anyway, you saved me a lot of time

[Esen Ozbay]

Thanks so much! Just what I was looking for since scatter was working problematic.

Answer 3

[Rami]

Hey , thanks for the answer but it doesn't work so good. I want the program to chose marker style and color much like the "plot" command chooses line color when you plot more than one vector / matrix.

[Friedrich]

The color is choosen like the plot command does it. Only the marker has to be set by yourself which is extremly easy, e.g.

x = linspace(0,3*pi,200);
y = cos(x)+ rand(1,200);
scatter(x,y)
hold on
x = 0:0.1:10
y = sin(x);
scatter(x,y,'*')
hold off

[Ihaveaquest]

wha if i wanted to just plot markers at oint 0 and 10??

Answer 4

[Yash Doshi]

You can also use the 'LineStyle','none' in the stem() function, and yes, MATLAB itself knows when to change markers for different columns, you just need to plot each column in a loop using (hold on).

Hope this answers and solves your query.

I know I have been very early in answering the question xD. But maybe it can be useful for anyone who sees this in the future.