How can I use the nearest neighbor interpolation and exclude the use of a specific value?

I would like to interpolate using the "nearest" method.

I have an 2D array that has zeros and non zeros.

I would like the interpolation to select the nearest non-zero value.

I have been looking around the matlab forums and have not been able to find a solution.

[Jon]

Seems ill-posed. If you have a pixel who has 7 nonzero neighbors (all different values) and only one zero neighbor, which of the 7 pixels do you choose?

[Taylor Shropshire]

Hey Jon,

Thanks for your response.

In the case you described above I would assume that the value would be the average of all 7 non-zero points.

I was thinking this is what the interpolate "nearest" function does if all the points are equally close.