I've annotated two specific points in my PCA but the text is in the middle of a bunch of points and hard to read. I would like to move it down (and add arrows which I think I've already done succesfully). Can anyone help?
I've made the text in the following way:
for i, txt in enumerate(cluster_center_names):
plt.annotate(txt,(x_cluster_center[i],y_cluster_center[i]), weight="bold", fontsize=10, arrowprops=dict(arrowstyle="->", color='black'))
Use xytext=(x,y) to set the coordinates of the text. You can provide these coordinates in absolute values (in data, axes, or figure coordinates), or in relative position using textcoords="offset points" for example.
More example at the annotation tutorial
x1,y1 = 0,0
x2,y2 = 20,50
fig, ax = plt.subplots()
ax.scatter(x1,y1)
ax.annotate("Annotation",
xy=(x1, y1), xycoords='data',
xytext=(x2, y2), textcoords='offset points',
arrowprops=dict(arrowstyle="->", color='black')
)
