Draw labels on the axes. Args: ax (matplotlib.Axes): The input axes. labels (ndarray): The labels with the shape of (n, ). positions (ndarray): The positions to draw each labels. scores (ndarray): The scores for each labels. class_names (list[str]): The c
(ax,
labels,
positions,
scores=None,
class_names=None,
color='w',
font_size=8,
scales=None,
horizontal_alignment='left')
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