将点添加到现有的matplotlib散点图

目前尚不清楚为什么

scatter

def addPoint(scat, new_point, c='k'):    old_off = scat.get_offsets()    new_off = np.concatenate([old_off,np.array(new_point, ndmin=2)])    old_c = scat.get_facecolors()    new_c = np.concatenate([old_c, np.array(matplotlib.colors.to_rgba(c), ndmin=2)])    scat.set_offsets(new_off)    scat.set_facecolors(new_c)    scat.axes.figure.canvas.draw_idle()

这允许您将新点添加到现有点

PathCollection

例：

fig, ax = plt.subplots()scat = ax.scatter([0,1,2],[3,4,5],cmap=matplotlib.cm.spring, c=[0,2,1])fig.canvas.draw()  # if running all the pre in the same cell, this is required for it to work, not sure whyaddPoint(scat, [3,6], 'c')addPoint(scat, [3.1,6.1], 'pink')addPoint(scat, [3.2,6.2], 'r')addPoint(scat, [3.3,6.3], 'xkcd:teal')ax.set_xlim(-1,4)ax.set_ylim(2,7)

请注意，我提议的功能非常基础，根据使用情况，需要使其变得更加智能。重要的是要认识到

facecolors

PathCollection