spatial_rdd |
Spatial RDD containing geometries to be queried.
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query_window_rdd |
Spatial RDD containing the query window(s).
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join_type |
Type of the join query (must be either "contain" or
"intersect").
If join_type is "contain", then a geometry from spatial_rdd will match
a geometry from the query_window_rdd if and only if the former is fully
contained in the latter.
If join_type is "intersect", then a geometry from spatial_rdd will
match a geometry from the query_window_rdd if and only if the former
intersects the latter.
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partitioner |
Spatial partitioning to apply to both spatial_rdd and
query_window_rdd to facilitate the join query. Can be either a grid type
(currently "quadtree" and "kdbtree" are supported) or a custom spatial
partitioner object. If partitioner is NULL, then assume the same spatial
partitioner has been applied to both spatial_rdd and query_window_rdd
already and skip the partitioning step.
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index_type |
Controls how spatial_rdd and query_window_rdd will be
indexed (unless they are indexed already). If "NONE", then no index will be
constructed and matching geometries will be identified in a doubly nested-
loop iterating through all possible pairs of elements from spatial_rdd
and query_window_rdd , which will be inefficient for large data sets.
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