Matlab plot modify linewidth, marker size question?

Question

I know how to do it my click hundred of buttons. How can I change the line width , marker size by a few command lines?

I see the lineseries function on the web, but I am not sure how to use it. I don't know how to use handler in Matlab

Assume I don't know whether I have marker on the graph; and I l don't know how many lines are on the graph. I need to change the size of the marker and the linewidth. What to do?

Thanks ahead

Answer 1

When you draw things in matlab, most routines return a handle to the objects that were drawn. You can then set any number of properties on the drawn objects via this handle.

For example, I can do this to change the line width of a plot:

x = -1:0.01:1;

y = acos(x);

figure;

hand = plot(x, y);

set(hand, 'LineWidth', 4);

For changing the marker size, you'd do

hand = plot(x, y, 'r.');

set(hand, 'MarkerSize', 30);

To change font properties of an axis label:

hand = xlabel('My Label');

set(hand, 'FontSize', 20);

set(hand, 'FontWeight', 'bold');

In general, you can get all the possible properties of an object by calling set(hand); on its handle.

Hope that helps.