GeoRabble Perth #17 – it’s a wrap!

Starting us off for the night was Tracy Jin Cui, with a fast-moving slide deck (47 slides!) on spatial in China; and one thing was astonishingly clear -not only is the spatial industry growing – it’s booming; and is now worth about 42 billion (US) dollars. Demand for location products and services continues to grow at a fast pace, and predominantly the platform of demand/use is mobile.

Tracy Jin Cui on Spatial in China @ GeoRabble Perth #17

Tracy Jin Cui on Spatial in China @ GeoRabble Perth #17

Bringing us back to more local extents, Marcia Schneider walked us through the ‘Historical Panoramas: Perth and Fremantle’ project which was borne out of a collaboration between Curtin University’s HIVE and the State Library of Western Australia. The project sourced historical images dating as far back as 1860, and stitched these into seamless panoramas. A sample set was then selected and georeferenced; and a task then set to capture modern-day panoramas of the same locations. Challenges faced included trying to access locations that were no longer accessible (but luckily drone technology was on hand). The resulting product was a beautiful virtual tour of the selected locations with the ability to fade/time-slide the panoramas. The tour can be accessed online here; and more locations are in the pipeline.

Historical Panorama Demo @ GeoRabble Perth #17

Historical Panorama Demo @ GeoRabble Perth #17

Next up, we had Voon Li Chung speaking to the keen georabblers about a possible method to optimise database queries involving GPS coordinates. The kernel of the issue is when performing a proximity search for coordinates stored as part of a larger database/dataset, there generally is no spatial relationship or index component to speed up the search. Either you go row-by-row or store all coordinates in memory…. Not particularly desirable when your computational device is a smartphone (and a cheap one at that). The aim was to devise a solution that could use the at-hand, off-the-shelf smartphone database technology (sqlite3), which already had desirable features – it’s fast, simple and taps into inherent database qualities – such as integer searches. The solution proposed would allow one to set a point of reference (of a certain distance from an interest point) and pre-calculate distances of other points from this reference point; and then perform search for those points falling within a certain (pre-calculated) distance range. This concept was further refined upon by introducing bearing values between a point and the reference point. These combined heuristics reduced a sample search set of coordinates from 133354 points to just 98 points! Impressive stuff!

Carrying on from Voon Li, we had Onno Benschop talking to us about his experiences participating in this year’s GovHack; and he walked us through his team’s hack on public housing in WA. They attempted to answer the ‘flipside’ of the more commonly known/asked question of ‘where should we not build public housing’ in order to address the ‘where should we build public housing?’ question. To do this, they tried to ascertain housing demand and accessibility to key services (in areas such as health & education) in order to rank areas by their desirability for public housing; and then produced visualisation of this in a geographical format – a map. Onno also spoke to us about experiences in the hackerspace environment and what it’s like to be a part of such an event. The link to their project page is here.

To conclude the evening, we had John Bryant speaking to us about a wonderful local initiative called ‘GeoGeeks’ which is an open-source based geospatial hack group that brings together an inspiring bunch of people fortnightly to tackle geospatial projects. John talked us through a couple of projects on the go: the ‘Maps for Lost Towns’, a venture aiming to bring 6000 historical map images to keen georeferencers through crowdsourcing technology; and the ‘WA Media Statements’ project which seeks to geocode all existing media statements to enable location-based searching/viewing. And many more projects are on the books – such as spatially tracking food trucks through tweets, or solar panel crowdsourcing. John also touched on the reasons to become involved as geospatial professional, regardless of your level of experience. You can learn new geo skills and improve problem solving abilities; it’s also an opportunity to give yourself the time/space to actually work on your own ideas, network and build meaningful connections with other industry professionals. And, because people from all industry-walks of life are welcome, you might even have the opportunity to open your mind to new ways of tackling age-old geospatial problems. To find out more, head this way.

A huge thanks also to our sponsor – Survey Results. Cheers! We couldn’t run events like this without the generous support of organisations in our industry.

We’re also making a call-out for some new organisers to join the local Georabble team. If you have ideas for topics, even if that means dobbing someone else in, or can help us with some drinks and nibbles for next time, we’d love to hear from you via

Stay tuned via #georabbleper for news about our next event coming up soon.


GeoRabble – Perth #15 / Perth does have a summer


  • Levi Fordham
  • Alex Chapman
  • Jesse Robertson
  • Maya Dominice
  • More to be announced!

Date: Tuesday, 24th November, 2015

Time: Doors open 5:30pm, Presentations from 6:00 pm

Location: Universal Bar, 221 William St, Northbridge 6003

Format: A handful speakers, 10 mins each, usual rules.

Registration: Attendance is free, but for catering purposes we need you to register!

Proudly sponsored by Boundless


Follow @georabble on twitter or use the hashtag #georabbleper to join the conversation.

We can’t hold these events without the help of the greater Geocommunity!

Please contact us if you’d like to be a part of sponsoring a future event.

GeoRabble Perth #13 – Perth doesn’t have a winter.

  • Helen Ensikat
  • Grace Yun
  • Cecilia Xia
  • Eun-Jung Holden
  • EK Gulland
  • Andrew Hutchison

Date: 3rd June, 2015
Time: Doors open 5:30pm, Presentations from 6:00 pm
Location: Universal Bar, William St, Northbridge

Proudly sponsored for the first time by Ajilon and produced by the Perth GeoRabble team


Format: Standard Rabble- A handful speakers, 10 mins each, usual rules.

Registration: Attendance is free, but for catering purposes we need you to register!

Follow @georabble on twitter or use the hashtag #georabbleper to join the conversation

We can’t hold these events without the help of the greater Geocommunity!

GeoRabble Perth 12 – The Mix Bag Wrap

GeoRabble 12 was an eye-opening extravaganza of topics we’d all love to get involved in and many being accessible and happening right here in Perth.

Volunteering a weekend to join a similarly willing and dedicated team in problem solving and programming was a timely showcase from Zane Prickett and an invitation to join Unearthed. Now in its second year, Unearthed was held in Perth in late March and is being expanded to 4 events across Australia in 2015. The Unearthed hackathon was set up to promote start-up companies and entrepreneurial ideas in the mining sector solving technical problems with innovative new ideas.

Dr Ori Gudes showed some incredible (sometimes frightening) tales of health stories told through maps. His journey in mapping diseases, nutrition, health tracking and getting all the health facts onto maps to help inform patients, planners and health professionals alike.

Erik Champion talked about the incredible 3D theatre HIVE at Curtin University and the work he and his students are doing by creating fully-immersive digital version of places around the world from long-ago. Virtual reality, open source tools and data including LIDAR, 360° photography and a little archaeological knowledge are used to share history as it’s never been taught before.

This type of interactive game play and learning is now allowing us to take part and interact with historical ritual in original settings and gain a better understanding of our heritage.

Mathieu Savard, all the way from Canada, demonstrated the wonderful world of motion capture for gaming with a live demo with a motion sensor input device  hooked up to a PC! His presentation showed us what can be done with a 3D model created in freely available software; and just what an engrossing and new experience we can create.

In the final presentation Steve Weiser showed us some of the drivers behind the Just Start IT program and how their 18 week high school program across some 30 schools in Perth is helping to instil business, life and technology skills in high school students. Steve demonstrated why it is so vitally important that we help to make this a generation of kids the new job creators in markets we haven’t seen or realised yet.

Big thanks to our Sponsors NGIS and all the speakers for the work they put in. Follow @georabble on twitter or use the hashtag #georabbleper to join the conversation.

Georabble 13 promises even more for hungry Perth audiences with tickets for the June event becoming available soon.

The mix bag that is Perth’s 12th Georabble

Calling all “sandgropers”, Georabble returns to Perth in 2015 starting with a mix bag of the interesting, the fascinating and the informative. Come join us on the 4th of March 2015 at Universal Bar (221 William Street) in Northbridge, kicking off at 5:30pm with networking. Talks start at 6pm. Register and grab yourself a free ticket while mixing with friends and geospatial peers, sharing stories and laughs free from the vendor rhetoric. Each presentation is light, relevant to geo-something and only 10 minutes long. More speakers to be announced soon although already on the line up are:

  • Dr Ori Gudes: I tell health stories with maps
  • Lainey Weiser: Taking technology and entrepreneurship into high schools
  • Erik Champion: 3D platforms can help preserve our Australian heritage

Registrations now open go to Eventbrite to grab your ticket! We are calling for more guest speakers – if you have a spatial idea that you would like to share with a group of like minded people, we want you! Contact the GeoRabble committee asap to express your interesting topic in 20words or less, or email your idea to A very special thanks to our local GIS experts NGIS who is sponsoring this event which we couldn’t run nor provide food to everyone without.  NGIS

Geo”Retro” Rabble – Perth 11

Taking a look at the past for this rabble! 

  • Lise Summers
  • Val McDuff
  • Nicholas Flett
  • plus more to be announced soon!

Date: 15th October, 2014
Time: Doors open 5:30pm, Presentations from 6:00 pm
Location: Universal Bar, William St, Northbridge

Format: A handful speakers, 10 mins each, usual rules.

Registration: Attendance is free, but for catering purposes we need you to register!


Follow @georabble on twitter or use the hashtag #georabbleper to join the conversation

We can’t hold these events without the help of the greater Geocommunity!

This event brought to you by the Perth GeoRabble team and sponsored by Hexagon Geospatial

Hexagon Geospatial

GeoRabble Perth #10 Wrap

GeoRabble #10 – It’s a wrap!

Happy 10th Birthday to GeoRabble Perth!

The evening kicked off with mirth to the sounds of a downpour or two as wet GeoRabblers braved the weather and trundled into the warmth and a welcome drink to celebrate all that is geo goodness.


Captivated ‘rabblers at GeoRabble #10 in Perth

MC Nic Flett for GeoRabble #10 Perth

MC Nic Flett for GeoRabble #10 Perth









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