<p>根据评论中的建议,我编写了以下代码:</p>
<pre><code>def f(x, y, points):
points = sorted(points)
xunique = np.unique([point[0] for point in points])
yunique = np.unique([point[1] for point in points])
xmax = np.max(xunique)
ymax = np.max(yunique)
deltax = xunique[1] - xunique[0]
deltay = yunique[1] - yunique[0]
x0 = xunique[0]
y0 = yunique[0]
ni = len(xunique)
nj = len(yunique)
i1 = int(np.floor((x-x0)/deltax))
if i1 == ni:
i1 = i1 - 1
i2 = int(np.ceil((x-x0)/deltax))
if i2 == ni:
i2 = i2 - 1
j1 = int(np.floor((y-y0)/deltay))
if j1 == nj:
j1 = j1 - 1
j2 = int(np.ceil((y-y0)/deltay))
if j2 == ni:
j2 = j2 - 1
pp=[]
if (i1==i2):
if i1>0:
i1=i1-1
else:
i2=i2+1
if (j1==j2):
if j1>0:
j1=j1-1
else:
j2=j2+1
pp=[points[i1 * nj + j1], points[i1 * nj + j2],
points[i2 * nj + j1], points[i2 * nj + j2]]
(x1, y1, q11), (_x1, y2, q12), (x2, _y1, q21), (_x2, _y2, q22) = pp
return (q11 * (x2 - x) * (y2 - y) +
q21 * (x - x1) * (y2 - y) +
q12 * (x2 - x) * (y - y1) +
q22 * (x - x1) * (y - y1)) / ((x2 - x1) * (y2 - y1))
</code></pre>