How do I create a 2-D plot with a matrix that contains data points and a matrix that contains class labels?
13 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Nicholas
am 5 Sep. 2022
Beantwortet: Walter Roberson
am 6 Sep. 2022
I would like to create a 2-d plot where the data points come from one matrix called features (8000x2). Column 1 contains the x values and column 2 contains the y values. I have worked out something that works here:
load data.mat
f = features;
c = classlabels;
plot(f(:,1),f(:,2),'x')
xlabel('Feature 1')
ylabel('Feature 2')
Now I also have a matrix called classlabels (8000x1). Each row contains a value 1 or 2 which idicate the class. Row one of classlabels corresponds to data point one, row two corresponds to data point two and so on. How can I incorporate the classlabels matrix such that I can change the shape/color of the data points obtained from the features matrix to make the classes 1 and 2 identifiable when plotted?
0 Kommentare
Akzeptierte Antwort
Abolfazl Chaman Motlagh
am 6 Sep. 2022
one simple way is to plot (scatter) every class separately.
f = rand(150,2);
C = randi(2,150,1);
scatter(f(C==1,1),f(C==1,2),'r','o');hold on;
scatter(f(C==2,1),f(C==2,2),'b','+');
legend('Class 1','Class 2');
if class are string or categorical or ... use correct logical equality in argument of f instead.
0 Kommentare
Weitere Antworten (1)
Siehe auch
Kategorien
Mehr zu Numeric Types finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!