You are considering 8 techniques and 9 characteristics in the context of
To evaluate spatial interpolation techniques
You can choose from the options listed below, have the system choose, or request other choices
 ? 
The following techniques are very similar,
proximal and edge finding
Do you want to enter another characteristic to distinguish them?
 ? 
The following characteristics are very similar,
non-smooth surfaces — very smooth surfaces
error estimates — no error estimates
Do you want to enter another technique to distinguish them?
 ? 
Can you think of a characteristic that distinguishes between the three techniques,
proximal, moving averages-constrained and fourier series,
such that two are alike and differ from the third?
 ? 
Can you think of a characteristic that distinguishes between the two techniques,
proximal and fourier series?
 ? 

Techniques  ? 

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Characteristics  ? 

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