Can I get the coordinates of markers to move the annotation to the top of the triangle?
import matplotlib.pyplot as plt
X = [1,2,3,4,5]
Y = [1,1,1,1,1]
labels = 'ABCDE'
sizes = [1000, 1500, 2000, 2500, 3000]
fig, ax = plt.subplots()
ax.scatter(X, Y, s= sizes, marker = 10)
for x, y, label, size in zip(X, Y, labels, sizes):
print(x,y)
ax.annotate(label, (x, y), fontsize=12)
plt.show()
Which gives me:
>Solution :
You need to (a) move the y coordinate by something proportional to the height of the marker; (b) root the text at bottom centre ("center" in American!).
Note that the "size" of a marker is proportional to its AREA. So its height is proportional to sqrt(size).
A certain amount of trial and error produced this. The height scaling probably depends on the type of marker.
import math
import matplotlib.pyplot as plt
X = [1,2,3,4,5]
Y = [1,1,1,1,1]
labels = 'ABCDE'
sizes = [1000, 1500, 2000, 2500, 3000]
fig, ax = plt.subplots()
ax.scatter(X, Y, s= sizes, marker = 10)
for x, y, label, size in zip(X, Y, labels, sizes):
print(x,y,size)
ax.annotate(label, (x, y + math.sqrt( size ) / 3000 ), horizontalalignment='center', fontsize=12)
plt.show()
