LocationTech is an Eclipse Foundation industry working group for location aware technologies. This presentation introduces LocationTech, looks at what it means for our industry and the participating projects. Libraries: JTS Topology Suite is the rocket science of GIS providing an implementation of Geometry. Mobile Map Tools provides a C++ foundation that is translated into Java and Javascript for maps on iOS, Andriod and WebGL. GeoMesa is a distributed key/value store based on Accumulo. Spatial4j integrates with JTS to provide Geometry on curved surface. Process: GeoTrellis real-time distributed processing used scala, akka and spark. GeoJinni mixes spatial data/indexing with Hadoop. Applications: GEOFF offers OpenLayers 3 as a SWT component. GeoGit distributed revision control for feature data. GeoScipt brings spatial data to Groovy, JavaScript, Python and Scala. uDig offers an eclipse based desktop GIS solution. Attend this presentation if want to know what LocationTech is about, are interested in these projects or curious about what projects will be next.

1. LocationTech
Projects

2. Introduction
Getting the party started

3. Jody Garnett
Senior Software Engineer
Boundless
Welcome
Projects:
GeoTools, GeoServer,uDig
Eclipse Foundation
LocationTech PSC, Technology Project
OSGeo
Incubation Chair, GeoTools Officer
Andrew Ross
Director, Ecosystem Dev.
Eclipse Foundation
GroupsLocationTech working group
Science working group
Long Term Support (LTS) program
Common Build Infrastructure program
Business Development
Membership Services

4. LocationTech
“LocationTech is a working group developing
advanced location aware technologies.”

5. Members
Strategic
Participating
Guest

6. Libraries

7. JTS Topology Suite
Martin Davis
Senior Technical Architect
Vivid Solutions Inc.
Projects:
JTS, JEQL, JCS, Proj4J, OpenJUMP GIS
OSGeo
Charter Member
Vivid Solutions

8. JTS Topology Suite
● Java API for Geometry
● OGC Standard: Simple Features for SQL
● One of the “Hard Parts” of Geospatial
● License
● Eclipse Distribution License (== BSD !)
● Eclipse Public License
● History
● Version 1.0 - 2001
● Version 1.13 - 2012
● Version 1.14 - 2014 Q4

9. Key to Open Source Spatial
Project Language
JTS Topology
Java
Suite
all JVM
Languages
JSTS JavaScript (Partial Port)
Net Topology
C#
Suite
GEOS C/C++
Shapely Python (via GEOS)
RGeo Ruby (via GEOS)
r-GEOS R (via GEOS)

11. JTS Geometry Model (OGC 99-049)

12. JTS Functions
● Spatial Predicates
● Intersects, Contains, Within, Covers, etc
● Geometry Validation
● Overlay Boolean operations
● Intersection, Union, Difference, SymDifference
● Metrics
● Length, Area, Distance, Hausdorff Distance
● Buffer
● Pos/Neg, Cap/Join styles
● Polygonization
● Delaunay Triangulation
● Voronoi Diagram

13. Geometry Example
GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();
Coordinate coord = new Coordinate(1, 1);
Point point = geometryFactory.createPoint(coord);

14. WKT Example
GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();
WKTReader reader = new WKTReader(geometryFactory);
Point point = (Point) reader.read("POINT (1 1)");

15. Buffer Example
GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();
WKTReader reader = new WKTReader( geometryFactory );
LineString line = (LineString) reader.read("LINESTRING(0 2, 2 0, 8 6)");
Geometry buffer = line.buffer( 0.75 );

16. JTS Test Builder

17. Mobile Map Tools
Manuel de la
Calle Alonso
Projects
Mobile Map Tools
Eclipse Foundation
LocationTech

18. Mobile Map Tools
• SDK For native mobile applications.
• Supports:
• Mobile maps in 2D, 2.5D and 3D
• Works on iOS, Android, webGL
• Built using C++ and translated to Java and JavaScript
• License:
• Eclipse Distribution License 1.0 (BSD)

19. Capabilities
Vector tiles:
● Raster
● Vectorial
● 3D models
● offline maps
● complex symbology
● native

20. New: Vector Tiles
● Postgis
● GeoJSON pyramid
● Native support on MMT

21. New: Point Cloud Streaming
● Berkeley DB
● Import and ordered
point process
● Point cloud streaming
● Native support on MMT
● The cloud save the shape
(we are always sending meaningful points, that
saves the shape of the point cloud)

22. Anthony Fox
Director, Data Science
Commonwealth Computer Research
Projects:
GeoMesa
Eclipse Foundation
LocationTech
LinkedIn
https://www.linkedin.com/pub/anthony-fox/5/467/574

23. • Distributed Spatio-temporal Database
• Built on Hadoop and Accumulo
• Scales to billions of features
• Written in Scala
• Apache License, v2.0

24. How GeoMesa Fits in Cloud Stack
K
A
F
K
A
Accumulo
HDFS
Cloud Stack and Distributed Resources

25. Jumping Into “Big Data”
Hop on over from PostGIS….
to GeoMesa
picturespk.com

26. Query Planning

27. Connecting to Spark

28. Spark RDD

29. Aggregating by Day

30. Plotting in R
14/08/18 01:05:57 INFO SparkContext: Job finished: collect at
Runner.scala:61, took 44.154914093 s
(20140801,398)
(20140802,409)
(20140803,328)
(20140804,374)
(20140805,354)
(20140806,377)
(20140807,328)
(20140808,326)
(20140809,365)
(20140810,542)
(20140811,1081)
(20140812,721)
(20140813,666)
(20140814,1184)
(20140815,964)

31. Predictive Threat Surface

32. Roadmap and Contact Info
• Road Map
• Release Imminent (IP Review)
• Analytics
• Contact & Tutorials
Anthony Fox & Andrew Hulbert (booth)
http://www.geomesa.org
geomesa-users@locationtech.org
geomesa-dev@locationtech.org

33. Spatial4j
David Smiley Apache Software Foundation
Committer & PMC of Lucene/Solr
Eclipse Foundation
LocationTech PMC
Freelance Lucene/Solr
developer/consultant

34. Spatial4j
Shapes!
• Point, Rect, Circle, Line, BufferedLine, Polygon,
and collections of these
• Cartesian, Cartesian with world-wrap
(cylindrical), and Spherical/Geodesic
• Computes intersection relationship & bbox
Also
• Computes point distance & shape area
• Extensible WKT parsing and
serialization/deserialization utilities
License: ASLv2

35. The Shape interface
• interface Shape {
• Point getCenter();
• Rectangle getBoundingBox();
• boolean hasArea();
• double getArea();
• SpatialRelation relate(Shape other);
• Must support Point & Rectangle
• enum SpatialRelation
• DISJOINT, INTERSECTS, WITHIN, CONTAINS
• Note: simpler set than the “DE-9IM” spatial standard
• no “equals” or “touches”

36. A romance in many dimensions
Shape Euclidean Cylindrical Spherical
Point Y Y Y
Rectangle Y Y Y
Circle Y Y
LineString Y
Buffered L/S Y
Polygon Y Y
Shape Collection Y Y Y

37. Distance example
SpatialContext ctx = SpatialContext.GEO;
Circle sydney=ctx.makeCircle(151.3,33.9, 0.3);
Point perth=ctx.makePoint(115.8,32.9);
double distance=ctx.calcDistance(sydney.getCenter(), perth);
double km=DistanceUtils.degrees2Dist(
distance,
DistanceUtils.EARTH_MEAN_RADIUS_KM)

38. More code samples
SpatialContext ctx = SpatialContext.GEO;
Rectangle r = ctx.makeRectangle(-71, -70, 42, 43);
Circle c = ctx.makeCircle(-72, 42, 1);
SpatialRelation rel = r.relate(c);
System.out.println(rel);
rel.intersects();//boolean
Distances (including circle
radius) are in “Degrees”, not
ctx = JtsSpatialContext.GEO;
Shape s = ctx.readShape(“POLYGON ((30 10, 10 20, 20 40, 40 40, 30 10))”);
double distanceDegrees = ctx.getDistCalc().distance(
ctx.makePoint(2, 2), ctx.makePoint(3, 3) );
radians or KM

39. Recent Activity
Thanks to the interns!:
● Rebecca Alford via Open-Academy:
○ geodesic polygons
● Chris Pavlicek via Open-Academy:
○ geodesic buffered lines
● Evana Gizzi, MITRE intern:
○ geodesic circle polygonizer

40. Processing

41. Robert
Cheetham
Founder and CEO
Azavea
Projects
GeoTrellis
Eclipse Foundation
LocationTech
GeoTrellis

42. GeoTrellis
• Scala geospatial library and platform for distributed real-time and batch processing
• Supports:
• Low latency & Distributed processing of raster data
• Highly scalable
• Based on Scala, Akka, & Spark
• License:
• Apache License, Version 2.0

43. GeoTrellis Chattanooga Demo
http://demo.geotrellis.com/chatta

44. GeoTrellis subprojects
● proj4
● PortWrapper of Proj4j
● vector
● Scala wrapper for JTS
● Reprojection support
● GeoJSON readwrite
● slick
● raster
● Vector data to/from PostGIS
● Raster IO, map algebra
● Vector <-> Raster operations
● engine
● Distributed Akka execution engine
for raster processing

45. GeoTrellis subprojects (cont.)
● gdal
● Read over 130 raster file formats using GDAL
● Wrapper around GDAL java bindings
● spark
● Aims to add comprehensive geospatial support to
Apache Spark
● Reproject, mosaic, tile and pyramid geotiff raster data
stored in HDFS into Accumulo or HDFS.
● RasterRDD with tile-based distributed operations
● Fast tile selection out of Accumulo.

46. Zonal Summary Example

47. Weighted Overlay Example

48. GeoTrellis Spark
geospatial @ scale

49. GeoTrellis Spark

50. GeoTrellis
● Functional programming with Scala
● To quote Anthony Fox of GeoMesa, “There’s a
confluence of geo and spark happening at LocationTech”
● Big data, cluster computing with Apache Spark &
Accumulo
● Both GeoMesa and GeoTrellis use Accumulo. Spark is
becoming a very popular alternative to Hadoop.

51. Ahmed Eldawy
University of Minnesota
Projects
GeoJini (SpatialHadoop)
Eclipse Foundation
LocationTech
GeoJini

52. GeoJini
• Batch processing
• MapReduce framework for efficient processing of spatial
operations
• Supports:
• Spatial data types & indexing
• Based on Hadoop
• Highly scalable
• License:
• Apache License, Version 2.0

53. Applications

54. Geo Fast Forward (GeoFF)
Erdal Karaca
Projects
GeoFF
Eclipse Foundation
LocationTech

55. Geo Fast Forward (GeoFF)
● Embed Simple Maps in Eclipse RCP
● Querying a geocoding service
● Use OpenLayers 3.0 as a resource bundle
● SWT Component wrapping embedded browser
● Fluent API so you do not have to know EMF
● License:
● Eclipse Public License 1.0

56. Define GeoMap for RCP Developers

57. New: GeoFF in Eclipse 4

58. GeoGig
Gabriel
Roldán
Software Developer
Boundless
Projects
GeoGig(GeoGit), GeoTools, GeoServer
Eclipse Foundation
LocationTech
OSGeo
Charter Member

59. GeoGig
• Distributed data storage and collaboration
• “geogig isn’t git”
• Supports:
• Distributed, off-line operation
• Versioning, compare & merge
• Push/pull data
• License:
• Eclipse Distribution License (BSD)

60. Quickstart
~$ geogig help
List geogig commands
~/new-folder $ geogig init
Initialise a geogig repository in new-folder
~/new-folder $ geogig shp import your_shapefile
Import a .shp file (or OSM, SpatialLite or PostGIS)
~/new-folder $ geogig ls
What's in your geogig repository
~/new-folder $ geogig status
What you can commit to a snapshot

61. GeoGig branching

62. QGIS plugin

63. GeoGig spatial diffs

64. GeoGig Update
News:
● Download: 1.0-beta1 today
● Thanks Ben for a great FOSS4G workshop
Incubation:
● LGPL → BSD
● packages → org.locationtech.geogig
● “initial code contribution” submitted
(Thanks to Sharon for patient Q&A)

65. GeoScript
Justin
Deoliveira
VP Engineering
Boundless
Projects
GeoScript, GeoTools,GeoServer,
OpenGeo Suite
Eclipse Foundation
LocationTech
OSGeo
Charter Member

66. GeoScript
● Adds spatial capabilities
to dynamic scripting languages.
● Supports:
● Groovy, JavaScript, Python, and Scala
● Backed by the GeoTools library
● geometry, data access and rendering
● Use stand-alone or embedded
● License: MIT License
● http://geoscript.github.io/foss4g2014-talk/#/

67. JavaScript
>> var geom = require("geoscript/geom");
>> var p = new geom.Point([-111.0, 45.7]);
>> p
<Point [-111, 45.7]>
>> var proj = require("geoscript/proj");
>> var p2 = proj.transform(p, "epsg:4326", "epsg:26912");
>> p2
<Point [500000, 5060716.31816507]>
>> var poly = p2.buffer(100);
>> poly.area
31214.451522458345

68. Python
>>> from geoscript import geom
>>> p = geom.Point(-111.0, 45.7)
>>> p
POINT(-111 45.7)
>>> from geoscript import proj
>>> p2 = proj.transform(p, 'epsg:4326', 'epsg:26912')
>>> p2
POINT (499999.42501775385 5060716.092032814)
>>> poly = p2.buffer(100)
>>> poly.getArea()
31214.45152247697

69. Scala
scala> import org.geoscript.geometry._
scala> import org.geoscript.projection._
scala> val p = Point(-110, 45.7) in Projection("EPSG:4326")
p: org.geoscript.geometry.Point = POINT (-110 45.7)
scala> val p2 = p in Projection("EPSG:26912")
p2: org.geoscript.geometry.Point = POINT (-370416.94184711506 -
7935053.5498699695)
scala> p2.buffer(100).area
res0: Double = 31214.451522477902

70. Groovy
groovy:000> import geoscript.geom.*
groovy:000> import geoscript.proj.Projection
groovy:000> p = new Point(-111, 45.7)
===> POINT (-111 45.7)
groovy:000> p2 = Projection.transform(p, 'epsg:4326', 'epsg:26912')
===> POINT (499999.42501775385, 5060716.092032814)
groovy:000> poly = p2.buffer(100)
groovy:000> poly.area
===> 31214.451522477902

71. GeoScript Update
● Jared working hard
● Curved geometries, GeoPackage, MBTiles
● Working on a common versioning scheme
● Standardizing on GeoTools version
● Early stages of incubation
● TODO: Logo :)

72. Jody Garnett
Senior Software Engineer
Boundless
Projects:
GeoTools, GeoServer,uDig
Frank Gasdorf
Software Developer
& GIS Professional
Plath GmbH
Projects
uDig
Eclipse Foundation
LocationTech
uDig

73. ● User-friendly Desktop Internet GIS
● Based on Eclipse Framework
● Reusable RCP components
● Java core libraries
uDig
(JTS, GeoTools, jgrasstools,imageio-ext)
● Supports:
● Industry standards formats and services formats
(WMS, WFS, KML, GeoTiff, etc)
● License: Eclipse Public License EPL and BSD

74. uDig SDK
Provides the best of Open Source Mapping for the Eclipse RCP Developer

75. User-friendly Desktop Internet GIS

76. JGrass - Hydrological Modeling

77. DEWS Distance Early Warning System
https://www.youtube.com/watch?v=-lGgkOd-Tl4

78. Globema - ELGrid

79. LocationTech

80. Full Service Foundation
IP
mgmt
Dev
Process
License
Model
Forge
&
Build
Community
Member
Network
Governance

81. Infrastructure

82. Events: Tour 2014
18 Cities around the world.
Speaking & sponsorship opportunities.
Great spirit of camraderie & learning

83. Events: FOSS4G-NA

84. Questions?
(Hand up for a microphone, project leads to the front)

85. Q&A
● Q: Do I have to use Eclipse infrastructure?A: See
https://github.com/locationtech(Thanks to the
Verte.x for sorting out how)