Samantha Chan in the lead of the Streams Toolkit team. Samantha's presentation will describe the enhancements made to the Geospatial Toolkit that ships with the IBM InfoSphere Streams V4.0 product. View related presentations and recordings from the Streams V4.0 Developers Conference at: https://developer.ibm.com/answers/questions/183353/ibm-infosphere-streams-40-developers-conference-on.html?smartspace=streamsdev

1. © 2015 IBM Corporation
Geospatial Toolkit
IBM InfoSphere Streams 4.0
Samantha Chan
Team Lead, Streams Toolkits Team
For questions about this presentation contact: chanskw@ca.ibm.com

2. 2 © 2015 IBM Corporation
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Agenda
 What’s New in Geospatial Toolkit
 Demos

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What’s New?
 4 new operators
– Geofence
– Hangout
– SpatialGridIndex
– SpatialRouter
 25 new functions
– com.ibm.streams.geospatial.st
–
– com.ibm.streams.geospatial.ext
• Useful functions for working with geohash, creating geometries in WKT and
utilities for working with geospatial data

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Geofence
 Define one or more of geographic regions of interest.
 As entities move in and out of the region, provide entry and exit
events.

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Smart Marketing Demo
 https://developer.ibm.com/streamsdev/docs/geofence-smart-
marketing/

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Demo - Hangout
 An operator to detect entities hanging out / dwelling in a region.
 An entity is said to be in a hangout if:
– The entity is staying in the same geographic area
– For a period of minimum dwell time

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Hanout Demo

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SpatialGridIndex
 Define a bounding box of interest. The bounding box is divided into
columns and rows to optimize for speed and memory.
 Port 0 – Entity Stream
– Entities contained by the bounding box are stored in memory and tracked.
 Port 1 - Query Stream
– Allows you to send in query to find entities within a certain distance of the
query.
– Query geometry can be a point or a polygon
 Output
– Returns a list of entities within the specified distance from the query.

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SpatialGridIndex Green – Taxis (Entity)
Red – Person looking for taxi (Query)
Yellow – Taxis within 1 km of the query point

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SpatialRouter
 The SpatialRouter operator is used to split an input stream that
contains geographical data into two or more output streams, based
on the geographic location specified by each tuple.
 Allow us to easily parallelize and scale up processing of
geographical data.
 Port 0 – input data split
 N number of output ports
 Guaranteed that entities with the same geohash will go to the same
port.

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Questions?