Number of neighbour named features

[xmichael]

About
Takes an “authoritative” point dataset, a radius, a min. threshold X, a target fieldname,a target value. Tests that for every observation that at least X observations of field with selected value exist in a auth. dataset within that radius

Example: for butterfly A test that there are at least 3 plants of type B within 10 metres.

Notes

• The original code adds an extra boolean column to the original dataset to indicate test result and returns the modified dataset

Original code
Location authoritativedata/NumberOfNeighbourNamedFeatures.java

Need to get feedback on this before implementing. Maybe a PCAPI filter implementation if use-cases require a server-side validation