如何使用matplotlib在圖像上繪制坐標數組？

Question

我正在嘗試使用matplotlib繪制坐標數組。 x＆y是具有x和y坐標的兩個數組。
樣本數據：

x = [489.99378204345703, 424.4607162475586, 665.4505157470703, 665.1176452636719]

y = [709.4012403488159, 253.38330745697021, 519.5582628250122, 519.5164632797241]

這是我用來繪制的代碼

im = plt.imread(p_transform_path)
implot = plt.imshow(im)
for p,q in zip(x,y):
    x_cord = x[p]
    y_cord = y[q]
    plt.scatter([x_cord], [y_cord])
plt.show()

p_transform_path是要在其上繪制坐標的圖像的路徑。

這是錯誤消息：

x_cord = x[p]
TypeError: list indices must be integers or slices, not numpy.float64

Answer 1

im = plt.imread(p_transform_path)
implot = plt.imshow(im)
for p,q in zip(x,y):
    x_cord = p # try this change (p and q are already the coordinates)
    y_cord = q
    plt.scatter([x_cord], [y_cord])
plt.show()