[Openstreetmap] Geowiki, OS Popular Series maps & exchanging large datasets
richard at systemeD.net
Mon Apr 25 20:03:01 BST 2005
On 25 Apr 2005, at 13:13, Alex Willmer wrote:
> Richard, if you're reading, would it be possible to get hold of these
> maps. I presume upload via the internet is out of the question, but
> could we meet in the Oxford/Northamptonshire area or could I send you a
> harddrive in the post? If my understanding of copyright isn't fubar, I
> believe you hold copyright on these images in particular. What license
> would you prefer if you're happy to release them?
Happy to meet up - I'm in Charlbury, Oxfordshire (or 435860, 219900 if
that's more precise (-: ).
On the copyright front: basically, I'm very happy for people to derive
whatever they want from the maps. I get very cross when people who've
produced facsimiles try to claim 100% copyright as if it were a modern
map... so I'm not doing that.
What I would like to reserve is the use of the full collection of
scans. Essentially, this is because I'd like to sell a CD or DVD
version for a modest price (about £20 or so) to family historians,
railway enthusiasts, etc. etc. But yes, I'm happy with pretty much any
derived work, even to the extent of using the full map as a base-layer
for an Internet mapping application.
> On geowiki itself: Wow! I'd no idea anyone had so much data, in
> particular the attributtion. The rendering is also very clear. Is all
> of that mapping manually captured and labelled? Was the point data
> showing towns captured from the scanned Popular Series maps?
The Geowiki mapping comes from a handful of sources, principally:
- Most roads are GPS tracks gathered by me or my co-conspirators.
- The built-up areas and greyed-out roads are from VMAP0/DCW.
- The placenames are a small dataset I compiled many years ago,
principally from historic data.
Everything was assembled and annotated with Adobe Illustrator, and
rasterised from there. I will be starting again in due course when
Geowiki goes fully vectorised, probably to be delivered through SWF via
the marvellous Ming library... but at the moment I'm a bit too busy
with the day job for that, sadly. Certainly my intention is to deliver
the data to Openstreetmap and make Geowiki a client, in much the same
way that Nick's doing with Freemap.
> I presume the geowiki data is what Richard was referring to, which he
> said he won't release under CC with SA?
That's it, yes. (It's worth pointing out that not all of the Geowiki
data is mine - a few others have gathered tracks and they probably have
their own opinions.) CC-BY is of course a less restrictive licence than
CC-BY-SA so it shouldn't actually hinder any products.
To explain my position on this a little...
I work as a freelance cartographer from time to time (generally, though
not always, unpaid). Often this is for community groups
(www.cotswoldcanals.com, www.castiron.org.uk), other times for my
employer (currently British Waterways). All of these are organisations
which, in my view, have more worthwhile things to do with their cash
then spend it on map licensing fees.
These maps are based on GPS tracks and historical mapping. I know other
people who want to use GPS tracks for similar projects - for example,
the very capable cartographer who draws the maps for Hebridean ferry
company Caledonian MacBrayne's timetables (Calmac is commercial, but
certainly not profit-making, if you get my drift). I'd like her, and
others like her, to be able to use my data. CC-BY-SA would prevent
I understand Frank's concern about not wanting big avaricious
corporations to filch our data, but if it happened, I could probably
live with this for a few reasons. Firstly, I'd rather that than see
other causes shut off from using the data. Secondly, CC-BY requires
prominent attribution, which would be good publicity for the free
mapping movement. And finally, if the big guys start using our data, it
might force national mapping agencies to open up their data in
response... which has to be good.
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