morwen: (Default)
Found out about this read-your-credit-report service called Noddle, which looks quite interesting. Had a go with it. It asks me for my previous addresses during the last 5 years.

Unfortunately, it makes you enter the postcode for these and look them up in the Postcode Address File. The Postcode Address File contains data about all the valid postal addresses in the UK at the moment. It is regularly revised (perhaps not often enough) with new developments. And when stuff gets demolished, it will get deleted from the dataset.

My last-but-one-flat was so demolished. It doesn't exist in the PAF any more. Neither, as far as I can make out, does the entire postcode or anything at that street number. And so when I come to the field to enter my address in 2007-2009, the system simply won't let me.

I pointed this out to them on twitter, and they apologised, but seem to have missed the point a bit. They say

we use it [the Postcode Address File] in order to ensure that addresses entered are current and valid.


But they're asking for historic data, not current data! This isn't the first time I've seen websites make this mistake. Most of you won't have come across this problem, as demolition of residential accommodation is fairly rare, so it doesn't look like there'll be mass consumer pressure to get them to fix it. But if you care about systems being correct, this might annoy you anyway.

There's another post brewing about the misuse of postcode areas as if they were some kind of useful geographic system, but that's another matter.
morwen: (Default)
Google Maps has got a new tileset since I last noticed. Obvious defects in areas I am familiar with.

1. London omitted at Z5 in favour of Reading
2. placenames in London that appear at Z11 disappear at Z12. The placenames on Z12 are a strange set, mostly the larger parks ("Hackney Marsh", "Victoria Park", but no Hackney, for example), but also "Harringay Ladder", which is a name I've never seen on a map before, and particularly oddly "The London Wetland Centre (The Wildfowl and Wetlands Trust)".
3. There's a "Dodgy Park" that has appeared just west of East Ferry Road on the Isle of Dogs, which seems to be some sort of nickname
4. Walthamstow Village is captioned "Upper Walthamstow", entirely the wrong place
5. the part of Wardour Street south of Shaftesbury Avenue is still labelled "Whitcomb Street", five years on and counting.
6. Knightsbridge label applied to an area west of Exhibition Road

Problems in new render:

1. railways render weird when bunched together at Z13 particularly and closer, e.g. around Stonebridge Park or the approaches to Kings Cross St Pancras.

But hey, at least

1. the M25 is no longer labelled as an "Autoroute britannique", and
2. and it doesn't think the A329 through Reading is a motorway any more

I don't know what exactly is going on here, but from the outside it appears Google Maps has been generally getting poorer with time. Absurdly poorer. I can only assume they don't test with London. Or possibly at all.

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Abigail Brady

May 2017

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