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…both
approaches “carve” a field into smaller pieces to better represent the
unique
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conditions
and patterns occurring in the field.
Zones pre-partitions it into relatively
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large,
irregular areas that are assumed to be homogenous—discrete polygons.
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Surfaces, on
the other hand, process field samples for an estimate of each factor at
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grid cells throughout
a uniform analysis grid—continuous
gradient.
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