I am using
kmeans for clustering and if I read the topics around here and somewhere else it is always recommended to do a graphical check-up for the number of clusters.
The problem is my orginal dataframe has 80 features. So I did a pca in python
pca = PCA(n_components=2) X_pca = pca.fit_transform(data)
Or do I miss something when I did the pca?