problem indexing signal integrity with coordinate_df.x_pixel

[j-bac]

It seems it can happen that coordinate_df.x_pixel.max()+1 or coordinate_df.y_pixel.max()+1 are higher than the signal_integrity shape. Then it is not clear how to index signal_integrity based on x_pixel and y_pixel

import ovrlpy
import pandas as pd

df = pd.DataFrame(np.array([[4705.,4274.954],[0.,0.]]),columns=['x','y'])
ovrlpy._ovrlp._assign_xy(df)
signal_integrity = ovrlpy._ssam2._utils.kde_2d(df[["x", "y"]].values)

assert (df.y_pixel.max() + 1) == signal_integrity.shape[1]
assert (df.x_pixel.max() + 1) == signal_integrity.shape[0]