Tagged with walking

Trip Stylist review: stroll around the City

A mere eighteen months after it had been given to us, Rachel and I went on our Trip Stylist day out around the City of London, “exploring hidden corners and treasures“.

We started out with brunch in a very nice little café tucked so well away that it made me wonder how anyone could find it without a tip. It was a very chilly morning, so a warm start was just what we needed. Rachel had mushrooms and a poached egg on soda toast, I tucked into a savoury pancake mountain.

Our brunch, just the ticket to start the day

We set off on full stomachs along narrow streets and past a few recommended parks in nooks and plaques in crannies to the Museum of London. I’ve cycled and walked past it innumerable times, that odd bunker in the middle of a roundabout, but never entered before. The exhibition design isn’t all that easy to follow, but it took us from the days of the hippopotamus wandering around the unpopulated Thames valley, through our hunting the aurochs to extinction, past Saxon and Viking and Roman and Norman invasions… well you get the idea.

A good mix of social history and Great Figures, including a fascinating collection of newspapers, pamphlets and placards from the turbulent early 20th century. I’d never heard of the Green Shirts, a left wing movement who wanted to end wage slavery and free man from the machine so we could enjoy more leisure time!

We then walked via a few other hidden treasures to the Guildhall Art Gallery, an altogether more establishment view of the world. The collection featured the usual heroic battles and religious scenes telling the ruling class version of English history, along with Victorian representations of classical scenes such as a large striking portrait of Klytaemnestra shortly after she committed her gory deed.

Our late afternoon stroll took us to the ruined church of St Dunstan-in-the-East, a lovely little haven and a reminder of the City’s deep and convoluted roots. Built in about 1100, it sheltered black death sufferers, was damaged in the Great Fire of London but saved from destruction by local schoolboys, expanded with designs by Christopher Wren, rebuilt again in the early 19th century, bombed out during the Blitz, and finally turned into a garden in the 1960s.

St Dunstan-in-the-East church in the City of London

From here we were advised to take the bus over to Whitechapel for our evening meal and drinks, but having time to spare we kept walking. It was surprisingly enjoyable strolling around an area I’m normally scurrying or pedaling through. The curry, at Tayyabs, was of course delicious, rounding off a fun day out.

The only thing I missed was a street map of the wider area. We occasionally hit temporary road closures, or got slightly confused, or needed the loo, or wanted a cup of tea. Knowing where to nip off to would have been a great help. A tool that could print off a map taking data from OpenStreetMap with just this useful info would be the perfect complement to the guide.

Tagged , , , ,

Why map data sometimes matters

I was contacted recently by a parent campaigning for a local school to ensure its admissions policy is properly applied. Over-subscribed schools like this one are a common source of frustration and worry up and down the country.

Here’s the rub. Which of these two homes would you say is closer to the school, and therefore more likely to secure a place?  By the way, I’m not sure that the location on the left actually is within the catchment area, it’s just a place I randomly chose to illustrate the coming point…

Routes to the school from two locations using CloudMade maps, the home on the right wins by 500m.

Parents at the location on the right were told they were too far from the school. The method they use to calculate safe distances to the school actually suggests that the location on the right is farther away than the location on the left!

Why?

Because they are calculating distances using a model that measures the distance as if you are driving a car. If you try that, you get a totally different result:

Routes plotted for cars to get to the school, the home on the left wins by 400m.

The school’s model uses the Ordnance Survey ITN maps, and apparently doesn’t account for this short footpath at the end of one road. It was pedestrianised 25 years ago.

Happily OpenStreetMap has all the relevant data (and a few minor corrections the parent, Jasia, pointed out to me) so anybody can plot the route to prove the point.

Incidentally, if you fancy showing your support for this campaign download this letter to the governors, sign it and send it to the address at the top of the document.

Tagged , , , , , , ,

Making open data maps the almost-easy way

One of the annoying things about open data is that you often need ninja skills to do anything with it. OpenStreetMap contains a wealth of geodata, but most tools make you jump through several steps involving the command line and all manner of data wrangling just to produce a custom map.

Maperitive tries to make it much easier to create nice looking maps. It has been in gestation since late 2007, and is now close to being easy to use.

It took me about half an hour of playing around to produce my first nice hiking map of Snowdon, although a problem with NASA’s elevation data led me on a frustrating journey to get Ordnance Survey open data in there to fill the gaps. I also had to work out Maperitive’s settings file for the way features are drawn to make the maps look a little neater and, well, British.

Making open data maps the almost-easy way

(Click on the images to see them on Flickr, where you can look at full sized versions).

Another hour messing around with the settings file and I had a nice map of an area my new father in law likes to go walking, the Long Mynd in the south of Shropshire. This time I aimed for something familiar to users of the Ordnance Survey walking maps.

Making open data maps the almost-easy way

The latest beta of Maperitive also allows you to export a 3 dimensional model using elevation data, and a flat image of the map. You can import these into a modelling tool, laying the map image over the 3d model, to produce nice graphics like this one of walking routes up Snowdon:

Making open data maps the almost-easy way

If the NASA elevation data works for you and you don’t want to change the style of the maps, it’s already a fantastic and fairly usable free-to-download tool. It’s a shame it isn’t free software with the code open sourced.

UPDATE: I completely forgot about this, you can download my Ordnance Survey-inspired stylesheet here.

Tagged , , , ,

Getting speed limits into OpenStreetMap

I’ve started trying to add speed limits data to roads in my patch of Southwark. Two things made me start looking at them…

First, I go everywhere by bicycle, which means speed limits and London congestion are of very little relevance to my journey times. But I noticed that journey planners like CloudMade’s offer wildly optimistic journey times for cars. Even ignoring congestion, I thought, they can’t be taking account of speed limits, which across London are lower than the national assumptions. For example, most main roads have a 30 mph speed limit and a growing number of roads, residential and main, have a safer 20 mph limit.

The second reason is that speed limits have been a big issue for cyclists recently, featuring in campaigns around issues like Blackfriars Bridge and Southwark’s Transport Strategy.

So here’s a snapshot of our data around Peckham and East Dulwich after a few sessions on my evening commute, using ITO’s excellent tool:

Orange roads are 30 mph, green are 20 mph or lower, grey are main roads without any data; all the minor roads without speed limit data just show through from the background. Getting more roads down to 20 mph will make them much calmer, more pleasant and safer for people on foot and bike.

Not a bad start, but we have a long way to go! I could probably get data out of TfL and Southwark Council. But I’m interested in seeing what I can actually find on the ground, both because the two sometimes don’t match up and because it made me aware of just how varied the signposting is.

With some roads it’s very obvious – it’s a short residential road with a signpost and a huge “20 mph” painted onto the road. On other roads you could easily miss it. Walworth Road has a 20 mph limit, but if you missed the single signpost going either north or south past endless distracting shops, signposts and shoppers, and buses that often block your view, you could be forgiven for assuming it’s 30 mph like most other roads.

Back to OpenStreetMap, it would be good to get better coverage of speed limits. I notice that some parts of the country like Norwich are very well mapped, while London – with the exception of my experiment, Islington and a little bit of Tower Hamlets – barely has any.

One for a winter mapping party, Harry? Or maybe another good reason to get cycling and pedestrian groups interested? I’ll talk to the Southwark campaigners…

Tagged , , , , , ,
Follow

Get every new post delivered to your Inbox.