how to plot a matrix of points in matlab

You can use scatter function to plot a matrix of points in MATLAB. Here is an example code:

main.m
% create a matrix of 1000 x 2
data = rand(1000, 2);

% plot the matrix
scatter(data(:,1), data(:,2));
102 chars
6 lines

In this example, rand function is used to create a matrix of 1000 rows and 2 columns with random values between 0 and 1. scatter function is used to plot the matrix, where the first column of data matrix is used as x-coordinates and the second column as y-coordinates for the points.

You can also customize the plot by specifying the size, color, and marker style of the points. For example:

main.m
% change the size, color, and marker of points
scatter(data(:,1), data(:,2), 10, 'red', 'filled', 'square');
109 chars
3 lines

In this example, the third argument 10 specifies the size of the markers, 'red' specifies the color of the markers, 'filled' specifies that the markers should be filled, and 'square' specifies the shape of the markers.