Wednesday, July 4, 2018

The future of maps: Cartography in the 21st century

Every Chinatown is regarded as a place of mystery and intrigue, but San Francisco's version is probably the most elusive of all.
This map by artist Ethel Chun uses a traditional Chinese color scheme to try and explain the chaos of Chinatown to the average American tourist.

From CNN by Marianna Cerini

For millennia, maps have held talismanic powers, helping to form spatial concepts and advance exploration.
They have shaped geopolitical ideas, triggered international disputes and created pictures of the world both large and detailed.
Today, satellites and digital mapping tools have turned modern cartography -- the science and art of map-making -- into a technology-driven field.
With accuracy all but guaranteed, new ways of visualizing space have emerged in the process.
They mix art, experience and topography, approaching the physical world through the lens of time, perspective and storytelling.


Qiu Zhijie: China's master mapmaker
Artist Qiu Zhijie discusses his diverse artistic career and how his practice of drawing maps unites different aspects of his work.
He also describes his newly commissioned work "Map of 'Art and China after 1989: Theater of the World'” (2017), which traces “several decades of contemporary Chinese art.”

"We've entered a new era for cartography," Zhou Qiming, a professor and director of the Centre for Geo-Computation Studies at Hong Kong Baptist University, said in a phone interview.
"Previously, map-making focused solely on projecting the Earth and its sphericality on a flat plane.
That's taking a less crucial role now.
"We're approaching geographical environments from different directions, and (finding) ways of presenting geospatial locations that aren't maps in the traditional sense, but rather map-like visualizations.
It's no longer just about a spatial display, although that remains the main reference point for any cartographer.
Maps are getting smarter, and showing us the world under different parameters."

From Babylon to GPS

The earliest known maps were, given the limited knowledge of their creators, produced as artistic expressions rather than accurate representations.
The "Babylonian Map of the World," a clay tablet created in Mesopotamia around 700 to 500 B.C., depicts Babylon as the center of the known world ringed by a circular waterway labelled "Salt-Sea" and surrounded by eight triangular regions.

The "Babylonian Map of the World," a clay tablet created in Mesopotamia around 700 to 500 B.C., shows the known world ringed by a circular waterway labelled "Salt-Sea" and surrounded by eight triangular regions.
Credit: Courtesy of The British Museum

Map-making took a turn for the realistic in the second century, when Greek scholar Claudius Ptolemy used math and geometry to devise a system of latitude and longitude for almost 10,000 locations in Europe, Asia and North Africa.
But even as cartography became an increasingly accurate science, maps were often more concerned with cultural traditions, storytelling and religious views.
A 12th-century map by the Islamic scholar Al-Sharif al-Idrisi portrayed a world with south at its top (as that's where Mecca was), with the northern hemisphere divided into seven climatic zones.
In the Middle Ages, the so-called "mappa mundi" often organized the world according to biblical time, with Christ looming over Jerusalem at their center.
Cartography made a technological leap during World War I with the development of aerial photography.
Then came radars and GPS, as maps moved into the digital sphere.
Through this technology, our understanding of maps has changed entirely, according to Eric Gunderson, CEO of Mapbox, a platform that provides mapping tool to companies like Foursquare, Evernote and Snapchat.
"They are instantly available, customized, interactive," he said in a phone interview.
"And users are at the center of them: We can make specific maps that aggregate elements we are interested in, and discard those we find irrelevant.
Maps compile data, but also behaviors and human experiences."
Alternative cartography
This may account for the future of cartography as a science, but what about map-making as an art?
Good City Life, a collective of researchers with no background in cartography, has been making maps according to how people feel about their cities.
"We've approached map-making from a different set of metrics," said co-founder Daniele Quercia in a phone interview.
"Taking into consideration things like sensory data, emotions, beauty (and) visual pleasure.
Maps aren't just two-dimensional."
Smelly maps, taking one's nose as a big data machine, capture the entire urban smellscape from social media data.

Smelly maps, taking one's nose as a big data machine, capture the entire urban smellscape from social media data.
Credit: Courtesy Good City Life

One of the resulting cartographies is Happy Maps, a series of online maps that use algorithms to sort through geotagged images and calculate the most scenic routes.
Another is Chatty Maps, a project that documents what people hear on the streets and considers how soundscapes influence their perception of their environments.
Each map is color-coded, with noises rendered in different hues.
Smelly Maps, a third experiment by Good City Life, works on a similar premise, but focuses on tracking smells.
"Maps can improve people's lives," Quercia said.
"Today, they can be conceived to work around people's psychologies and to convey experiences."
Smells also underpin the maps made by Kate McLean, program director for graphic design at the UK's Canterbury Christ Church University.
Her charts guide people on city walks -- or "smellwalks" -- after which she gathers their olfactory impressions and uses them to visualize the "smellscape."

"New York's Thresholds of Smell" shows an exploration of the smells found in the doorways and windows of a Greenwich Village Block in the summer of 2013.

"From a design perspective, smell is such an under-researched sense -- perhaps because it's so difficult to represent," McLean said in a phone interview.
"I was intrigued by how it could help us understand the world we live in
"I base all my work on physical experiences, rather than algorithms," she added.
"Mine is certainly an artistic kind of cartography, but I am intrigued by how maps can maybe bring alternative realities into being, rather than presenting a fixed record of things."

Creating 'personal geographies'

Chelsea Nestel, a PhD student specializing in cartography at the University of Wisconsin-Madison, thinks of modern map-making in similar terms.
"The first rule of geography is that everything is related to everything else," she said in a phone interview.
"Today's cartography reflects exactly that: It combines design, geography, anthropology, human impressions and ideas within spatial contexts.
It's a connector, an aggregator.
And, increasingly, it's a way of telling stories."

Nestel produced a one to one scale scientific map of her body based on radiography and research.
The cartographer also used collaged memories to create a personal map of emotions.
Credit: Courtesy Chelsea Nestel

Nestel's creations span graphic design, comics and traditional mapping techniques.
One of her hand-drawn creations shows the territories of the United States according to the mythical beasts and monsters that supposedly inhabit them.
Another presents the world through the flow of tweets that followed earthquakes in Haiti, Chile, Japan and Turkey between 2010 and 2011.
Her most personal map, titled "Sum," is a depiction of her own body based on X-ray scans, blended with a collage of words and personal memories.
"Mapping tools are so advanced that there's no really limit to what maps can show and do," she said.
"And that includes exploring emotions and subjectivity."
Welsh-born artist Gareth Wood, who goes by the name Fuller, borrows the tools of cartography to create geo-pictorial maps of world cities and present "the sense of a place." His huge, detailed artworks depict landmarks alongside pop culture symbols and other curiosities.

Artist Fuller charted the changing structures of London between 2005 and 2015.
Credit: Courtesy Fuller

"My maps blend my personal experiences with the culture and society of the place I am in," he said in a phone interview.
"They are snapshots of what I feel or see."
To create his most recent work -- a map of Beijing, where he is currently based -- Fuller circumnavigated a 140-kilometer outer-city ring road, before sitting down to sketch.
"Wandering helps me understand the people, as well as the different economic, environmental and social strata I need to represent," he said.
"I'm not a traditional map-maker.
But I create personal geographies and observe human stories, and isn't cartography supposed to be doing that?"

Australia invests in GPS/SBAS technology for national positioning


From GPS World by Tracy Cozzens

The Australian government is investing in GPS technology that will create jobs and support Australian industry.

Minister for Resources and Northern Australia, Senator Matt Canavan, said the government is investing over $260 million to develop the satellite technology.
“We rely on satellite and GPS technology for just about every aspect of our lives — from Google Maps on our individual phones, through to air traffic control at the busiest airports,” Canavan said.
“More precise technology will make Australian businesses more productive, safer and more efficient.
Specifically, Canavan said,
“More accurate GPS will improve productivity by allowing new technology to be created and used across the economy. Growing Australia’s digital economy will also benefit developed sectors such as mining, transport, construction, aviation and agriculture.
“This investment will improve competitiveness and secure jobs across the Australian economy.”

SBAS Testbed.

Under the package, $160.9 million will deliver a Satellite-Based Augmentation System (SBAS) to improve the reliability and the accuracy of positioning data from five meters to 10 centimeters­­ across Australia and its maritime zone.

The $160.9 million includes funding over four years from 2018-19 and $39.2 million in ongoing funding from 2022-23.
It will realize the SBAS testbed, which is currently running across Australia-New Zealand.

CRCSI is an international research and development centre set up in 2003 under the Australian Government Business Cooperative Research Centres Programme.
The CRCSI is managing the industry-based demonstrator projects of the SBAS testbed and the economic benefits study.
The infrastructure management is being led by Geoscience Australia in partnership with Land Information New Zealand and the global technology companies GMV, Inmarsat and Lockheed Martin.
“We have been coordinating multiple trials of first and second generation SBAS and Precise Point Positioning correction signals since mid-2017,” said Graeme Kernich, CRCSI CEO.
“Our industry partners are crying out for this technology because a more precise positioning capability brings far-reaching and lasting impacts.

SBAS Testbed (Image : Geoscience Australia)

“Data analysis results and the economic benefits reported from the testbed are very promising and will translate across agriculture, aviation, consumer, construction, maritime, mining, rail, road, spatial and utilities.
“This is a formidable technology story and a practical demonstration of downstream space applications.
We are looking forward to continuing the testbed over the coming nine months and assessing the economic and social benefits the operational system will bring to Australia, and possibly New Zealand,” Kernich said.
“The CRCSI has a strong track record of bringing the best people together from the private sector, government and academia to solve the most complex spatial problems; the SBAS testbed is one of the finest examples of this,” Kernich said.
“More accurate and reliable satellite positioning technology will improve the safety and efficiency of many sectors across Australia and New Zealand,” he said.
“There are 28 projects across 10 sectors, with over 150 collaborating organizations currently involved in the testbed, making the footprint of this world-first trial truly trans-Tasman.”

National Positioning Infrastructure.

A $64 million investment in the National Positioning Infrastructure Capability (NPIC) will complement SBAS to improve GPS to an accuracy as precise as 3 centimeters in areas of Australia with access to mobile coverage.
The national positioning infrastructure project will establish additional ground stations and augment GNSS signals to deliver high accuracy positioning.
This will ensure nationally consistent and accurate positioning of 3 centimeters can be provided across Australia in areas with mobile coverage.

The project will achieve this by:
  • building new GNSS ground stations and integrating existing stations to enable multiple GNSS signals to be received for precise positioning across Australia.
  • establishing a GNSS data analytics capability to verify and correct the positioning signals for the user. This will ensure Australian industry has access to world-leading software tools for positioning.
  • engaging existing and new industries and service providers to raise awareness of the opportunities positioning opens up for businesses through increased productivity, safety and innovation.
The NPI consists of the ground infrastructure to enhance accuracy to 3 centimetres by utilising signals from global navigation satellites and the mobile phone network across Australia.
(Image: Geoscience Australia)

“Our investment in this world-standard technology will have direct benefits including virtual fencing for farms and better management of cattle and livestock over vast distances,” Canavan said.
“It also has applications for regional aviation such as improved access to regional areas by enabling planes to land on smaller airstrips and navigate difficult terrain such as canyons.
“The increased reliability provided by better GPS will improve safety for aircraft flying into regional and remote aerodromes, such as the Royal Flying Doctor Service fleet.
It will reduce the impact of weather on flight cancellations and diversions, and improve the safety of landings.
“The resource sector will also benefit through better control of mine infrastructure, safety and more precise data for environmental rehabilitation.
“This is a practical investment to improve the lives of Australians and make businesses more productive.
This technology provides instant, reliable and accurate positioning information, anytime and anywhere around Australia.”

Digital Earth Australia.

A further $36.9 million is for Digital Earth Australia, a technology that will give Australian businesses greater access to reliable, standardized satellite data that identifies physical changes to the Australian environment.
“The practical benefits of this investment will extend across our economy.
This data will help researchers, governments and business better understand environmental changes, such as coastal erosion, crop growth and water quality,” Canavan said.
“For example, information drawn from satellites is vital to help graziers increase the capacity of paddocks and make their farms more viable and sustainable.
“Our investment in satellite imagery will ensure a range of Australian industries have access to data that can help them tailor their investments, create jobs in target regions and increase their competitiveness.”

Western Australia (DOT WA) new layer in the GeoGarage platform

53 (104 including insets) nautical raster coastal charts added in the GeoGarage platform

see GeoGarage news

 1753 French Map of Australia and part of New Zealand

Tuesday, July 3, 2018

Diverse geography of Britain’s 82 largest islands revealed



From Sheffield Univ.

A University of Sheffield academic has worked with Ordnance Survey to showcase the diverse geography and unique characteristics of Britain’s largest islands.

Great Britain is an island in its own right, but aside from the mainland there are hundreds of islands around the British coast, with many uninhabited.

 Biggest Scottish islands with the GeoGarage platform

Professor Alasdair Rae from the University of Sheffield’s Department of Urban Studies and Planning worked with Ordnance Survey’s GeoDataViz team to explore the 82 English, Scottish and Welsh islands that are larger than 5km2.
Scotland – whose Parliament recently passed the Islands Bill to offer greater protection and powers to its island communities – boasts the most islands with 71, while Wales has just two entries and England nine.
The team used Ordnance Survey’s Boundary-Line data to define the area and length of coastline for each island, with some interesting results.

Britain’s largest islands - 82 of them over 5km2,
Scotland boasts the vast majority with 71, not surprising when you consider the Outer Hebrides, Shetland and Orkney and other beautiful islands off the coast.
Wales had just 2 entries and England 9

Lewis and Harris topped the tables for being the largest island by area – around 1.4 times the size of Greater London – and boasts the longest coastline, but not all islands had such a correlation.
North Uist was the 12th largest island, but has the fifth longest coastline.
Conversely, Arran was the eighth largest island but has the 18th longest coastline.

Adding in data from AddressBase, the GeoDataViz team compiled the number of residential addresses on each island and realised that having the largest area does of course not equate to having the most addresses.
Mull is the fourth largest island, but 18th when you look at addresses.
Portsea Island, which contains most of the city of Portsmouth, tops the table for most residential addresses, but is 38th in the list of islands by area.
Harta, Mingulay, Pabbay, Scarp and Taransay have no permanent residents.

The team has produced an ‘Islands Off Great Britain’ poster and a quiz where people can test their knowledge of the islands.
Professor Rae said: "Ordnance Survey was founded in 1791 and has been a global leader in geographic data for over 225 years.
In 2010, it released a huge tranche of its archives as open data, so that scientists, planners, architects, geographers and others could benefit through enhanced access to some of the best spatial data in the world.
“It's not always obvious how much data is out there, or what it shows, so our 'Islands Off Great Britain' project is a way to highlight the kinds of data available to users, and also learn something about the geography of Great Britain.”
He added: "It was great to be involved in this project with Ordnance Survey since it enabled me to work with one of our MSc in Applied GIS graduates, Joe Harrison, and renowned cartographer and geovisualization expert Charley Glynn. Working with these Ordnance Survey experts, it was great to tap into the treasure trove of data they hold to try and tell a simple story about Great Britain's islands, in a way that might draw people's attention to the underlying data."

Facts and figures

Top 5 islands by area
1. Lewis and Harris
2. Skye
3. Mainland, Shetland
4. Mull
5. Anglesey

Top 5 islands by length of coastline
1. Lewis and Harris
2. Mainland, Shetland
3. Skye
4. Mull
5. North Uist

Top 5 islands by residential addresses
1. Portsea Island
2. Isle of Wight
3. Anglesey
4. Isle of Sheppey
5. Canvey Island


Links :

British Isles & misc. layer update in the GeoGarage platform