MATLAB Separate Points for Plotting

[strokebow]

Hi,

I have generated 1000 data points.
I have assigned them a class (1 or 0) depending if they are above or below a decision boundary.

I want to plot the data on a graph with the class 1 data points in one colour and the class 0 data points in another.

any ideasa how I can do this please.

Thanks!

 

[MATLABdude]

Split the set of data points into two sets (x0, y0, x1, y1), class 0 and class 1. Then plot the two sets of data as points with different colours.
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/plot.html

 

[oswaler]

Hi there,

Thank you for sharing your question. In order to plot your data points with different colors based on their assigned class, you can use the "scatter" function in MATLAB. This function allows you to specify the x and y coordinates of your data points, as well as their color and shape. Here is an example code:

x = randn(1000,1); % generate 1000 random data points for x
y = randn(1000,1); % generate 1000 random data points for y
class = randi([0 1],1000,1); % randomly assign class 0 or 1 to each data point

% plot class 1 data points in red
scatter(x(class==1),y(class==1),'r');
hold on; % keeps the current plot and adds new elements
% plot class 0 data points in blue
scatter(x(class==0),y(class==0),'b');
legend('Class 1','Class 0'); % add legend to the plot
xlabel('X'); % label x-axis
ylabel('Y'); % label y-axis
title('Plot of Data Points with Different Classes'); % add title to the plot

I hope this helps! Please let me know if you have any further questions. Good luck with your project.