convexhull issue

[pamdla]

Hi, I had this problem while using KMeansLayer:
raise Exception('convexhull requires at least 3 points')
how can I use it?

ps: my data file is a txt file, and it has three columns (id, lon, lat).

[andrea-cuttone]

convexhull does require at least 3 points

Try modifying kmeans.py

for l in set(labels):
        self.painter.set_color(self.cmap[l])
        if len(x[labels == l]) >= 3:
            self.painter.convexhull(x[labels == l], y[labels == l])
        self.painter.points(x[labels == l], y[labels == l], 2)