The Current Situation

posted in: Uncategorized | 0

The Current Situation is a collection of work by artist Yara el-Sherbini, whose centrepiece is an interactive sculpture of a map of the world. It is large, 7.8m wide and 3.5m high with steps leading up to the rear. I saw it at its current location in Wolverhampton Art Gallery. I popped in whilst I was surveying some listed buildings (heritage buildings for readers not in the UK).

The work is an impressive sculpture but its true nature is not revealed until the audience engages with it. As you can see from the picture it emulates a children’s game where you have to trace around the object with a metal implement without touching it. Here you trace around the national borders and should you touch one, red lights flash onto the sculpture, buzzers sound and the metal implement in your hand vibrates strongly. Just as in real life, navigating borders becomes a matter of tactics and skill and should you transgress the rules, alarms and shocks await you.

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Again as in real life, some people participate and some watch from the sidelines. It’s only when you play that the real dynamic of conflicts, dangers and exploration becomes apparent. What if no-one plays? Then the sculpture just becomes a beautiful metal map of the world, a static monument which might be seen in many public places around the planet, representing a harmonious, static view of a united world, one that is controlled and restricted.

I found it a clever and thoughtful piece which questions the unspoken cultural components and geopolitical struggles present in a map. You can study a map and only see a small representation of its true content. As the exhibition guide says: ” El-Sherbini’s shock tactic speaks to the physical and legislative strategies used by governments to reinforce and control their borders: from walls, barbed wire, electrical fences, manned and unmanned surveillance, to visa restrictions and immigration curbs.”

The collection is on tour nationally so watch out for it

A visit to view one of the Sheldon Tapestry Maps

posted in: Observations | 1

Friday saw me on a family visit to Oxford to view the Sheldon Tapestry Map of Worcestershire hanging in the Weston Library (part of the Bodleian Library). It is a magnificent spectacle, being woven in silk and wool, and standing some 4m tall by 6m wide. Although it is assumed that it was woven in Warwickshire at Barcheston, current research throws doubt on this.

The Bodleian Library Map Room is the second largest in the UK and is one of the world’s top ten map collections – so it’s a must-visit for any map  lover.

The tapestry on display is one of  four tapestry-woven maps commissioned in the sixteenth century by Ralph Sheldon, a prominent Midlands landowner, based on the county surveys of Christopher Saxton. Each  tapestry illustrates one of the counties of  Gloucestershire, Worcestershire, Warwickshire and Oxfordshire.  They would have formed a panoramic view of Sheldon’s land when hung in his home in Weston near Long Compton, Warwickshire. The maps are an  important stage in the evolution of cartography.

This tapestry survives in parts only: in fact the only complete one is that of Warwickshire which hangs in the Market Hall Museum in Warwick. You can see what was involved in restoring the tapestry here.

There is an intriguing reference to  an area “whych was dryven downe by the removying of the land” close to a placename of The Worldes End.  The Guardian had a good piece about the tapestry , although the mystery of the “removying of the ground” seems to have been solved – apparently it was a massive landslide.

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If  you want an in-depth view of the tapestries see this scholarly article.

It’s good to know that mappa mercia is following an ancient tradition of local map-making although I don’t think OpenStreetMap will ever come close to the beauty and craft of the Sheldon Tapestry Maps.

Highlights from Water Orton

posted in: Map Improvements, Mapping Party | 1

On Thursday 4th June the Mappa Mercia group met in Water Orton on the outskirts of Birmingham, UK, for our monthly mapping event. We had good weather but not everything else went to plan! Here’s a few highlights from our twitter account – you can follow us on @mappamercia.

Despite being briefly stopped by the police (a first for us) we had a great time mapping Water Orton. If you would like to join us next time we will be in Telford. Although details are yet to be 100% finalised it is looking like we will diverge from our normal ‘first Thursday of the month’ to make more of an event out of it. So join us on Saturday 4th July in Telford.

Strava routing errors: Useful or just another MapDust?

posted in: Map Improvements | 3

It is now becoming increasingly difficult to spot errors in OpenStreetMap just by looking at the map on openstreetmap.org. To help we have a collection of quality assurance tools, and this weekend I discovered a new one developed by Strava. The keen cyclists or runners amongst us will recognise the name – Strava is a phone app/service then enables you to monitor your athletic progress over time and compare it against others. To do this it keeps a track of your run/cycle using the GPS built in to your smartphone. Consequently Strava have built up a large database of GPS traces and user contributed map errors. From this they have built a “routing errors” website to help iron out any issues in the underlying map data, which naturally is based on OpenStreetMap.

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Strava’s ‘routing errors’ service (link).

The service highlights 2 different types of errors: those manually entered by it’s users, and those automatically detected from the map data and the recorded GPS traces (e.g. many cyclists riding the “wrong” way down what is a one-way street in OpenStreetMap suggests that the OSM data may be incorrect).

I’ve had a quick play with this new quality assurance tool (with mixed results), but I’d love to hear your views. One concern is that the manually submitted “errors” may be a problem with user behaviour or the Strava app itself, rather than an issue with the OpenStreetMap data, al la MapDust – a similar, and now quite dated service from Skobbler. But is this view too pessimistic? Is there useful data in the manually submitted errors? And how about the (US only) automatically detected errors? Are these a reliable source of quality assurance data for OpenStreetMap?

Let us know your views in the comments section below and feel free to share any other great QA tips you may have.

 

“We need to think about smartphone editors”

posted in: Observations, Participate | 3

During the cold, wet days of a UK winter it is tempting to contribute to OpenStreetMap via the comfort of your own living room. Unlike when OpenStreetMap started in 2004 this is actually now a reasonable way to contribute to the map – we have high quality aerial imagery (including that from Warwickshire County Council), a licence compatible version of ‘StreetView’ courtesy of Mappillary, and numerous OpenData data sources.

Despite this we do still encourage contributors to get out and map ‘on the ground’. The benefit of an on the ground map survey is that you are always seeing up to date data (what is there now, rather than months/years ago when imagery was recorded) and you get to learn many of the intricacies of the environment around us. It can also really fun!

So how easy is it to be a mapper ‘on the ground’? According to seasoned mapper, keen cyclist, and Potlatch developer, Richard Fairhurst, it’s not easy enough. In this fascinating talk at State of the Map US last weekend Richard makes a plea for OpenStreetMap apps for iPhone and Android. A lot has changed in the last 10 years and OpenStreetMap needs to keep it’s tools up to date whilst continuing to make it easier to contibute to OpenStreetMap.

Introducing smart editors…

Mappa Mercia at State of the Map US 2015

posted in: Mapping Party | 1

Last weekend saw hundreds of OpenStreetMappers descend on New York City for State of the Map US 2015. Our very own Andy Mabbett (he’s @pigsonthewing on twitter) was in attendance and gave two talks; the first on Wikidata and it’s inclusion in OpenStreetMap, whilst the second (a 5 minute ‘lightning talk’) was on us, the Mappa Mercia community. Here’s how it played out.

Wikidata for mappers

You can read more about Andy’s proposal to automate wikidata tagging in OpenStreetMap here. To see which map features already include a wikidata tag check out this map.

Mappa Mercia

Andy’s ‘lightning talk’ on day 2 showed off some of our work and discussed how to build a local community:

Voice of Megan Smith

On Saturday a surprise speaker was announced – Megan Smith, Chief Technology Officer of the United States. Andy used the opportunity to capture a sample of her voice for ‘voice intro project‘ he instigated on wikipedia. You can listen to the audio clip on her wikipedia page.

June meetup

posted in: Uncategorized | 0

June 4th saw us meet at the Digby pub in Water Orton after an evening of mapping footpaths, listed buildings, shops, postboxes, addresses and well, just about anything interesting we saw -but not the detective who subjected Matthias to a stop and search , as mapper behaviour of taking notes and photos was regarded as “suspicious”!

What a way for Matthias to end his stay in the UK! Good Luck Matthias back in the Netherlands and thanks for all your hard work with  mappa mercia.

We’ve also decided to setup a Facebook page as a way of reaching a new audience.