在绘制矢量时绘制点：Matlab

Question

I need to make a plot with only points and tried something like

plot(x,y)

where x and y are vectors: collection of points.

I do not want matlab to connect these points itself. I want to plot as if plotted with

for loop
plot;hold on;
end

I tried

plot(x,y,'.');

But this gave me too thick points.

I do not want to use forloop because it is time expensive. It takes a lot of time.

Answer 1

你几乎就在那里，只需更改MarkerSize属性：

plot(x,y,'.','MarkerSize',1)

Answer 2

Try:

plot(x,y,'*');

or

plot(x,y,'+');

You can take a look to the documentation: http://www.mathworks.nl/help/matlab/creating_plots/using-high-level-plotting-functions.html

Answer 3

help scatter

IIRC: where S is the size of the scatter points: scatter(x,y,S)

Answer 4

You may try this piece of code that avoid using loops. The plot created does not have lines but markers of different colors corresponding to each column of matrices x and y .

%some data (matrix)
x = repmat((2:10)',1,6);
y = bsxfun(@times, x, 1:6);

set(0,'DefaultAxesColorOrder', jet(6)); %set the default matlab color 

figure('Color','w');
plot(x,y,'p'); %single call to plot
axis([1 11 0 70]);
box off;
legend(('a':'f')');

This gives