zomg, kothic looks awesome, I'll definitely be giving that a whirl. :-) On 16 Jun 2011, at 22:24, Graham Jones wrote:
> Hi Adam, > The kothic system that Richard pointed you to is well worth a look - it > renders very pretty maps. I think it uses a styling language similar to the > 'carto' one I talked about. I haven't looked at how you actually customise > it without setting up your own server yet though. > > If you want to have a look at mapnik and OSM, the instructions on the OSM > wiki are a good place to start (http://wiki.openstreetmap.org/wiki/Mapnik). > > The biggest difference between the mapnik tutorial that you used is that > yours used data from a 'shape file'. The OSM style uses a postgresql > database to hold the main OSM data, and a number of shape files for > coastlines, built up areas etc. > > I find the postgresql bit the tricky bit - follow the instructions on > Mapnik/PostGIS to set that up (linked from the Mapnik page). > > Have fun! > > Graham. > > On 16 June 2011 21:09, Adam Hoyle <[email protected]> wrote: > Hey Graham, > > All very helpful information, thank you very very much :-) > > I just managed to figure out where I got to. I basically followed the > tutorial here: > http://trac.mapnik.org/wiki/GettingStarted > > to save you clicking it, I haven't even got the osm stylesheet yet, but I > have rendered a rather sweet view of the entire world. Not too shabby, and > not exactly advanced, but I was quite happy. > > So any pointers for the biggest learning curve bit? ;-) > > Maybe I should wait for the thang Richard mentioned, although I'd love to get > something at a more local level than the entire world rendered in Mapnik, > just so I can tick that off my to-do list :-) > > ttfn, > > Adam > > On 15 Jun 2011, at 22:41, Graham Jones wrote: > >> Hi Adam, >> No problem - these lists have been a bit busy over the last few days.... >> >> If you have got mapnik running and generating maps using the 'standard' osm >> stylesheet, you have got over the biggest learning curve. You will >> probably have noticed that the 'standard' osm stylesheet is very complicated >> - this is because it renders lots of different information differently at >> different zoom levels. >> >> If you want to add contours, it is possible to do that by importing the >> contours into your postgresql database, and modifying the standard osm style >> file to plot them. I have a crude example of this at >> http://code.google.com/p/ntmisc/source/browse/#svn%2Fkefalonia_map - all my >> changes compared to the standard osm style file are in the 'inc' directory - >> I added a file that defines the style for the contour line drawing, and also >> changed some other files to include the new one - search the osm wiki for >> contours to see how to get contours into your postgresql database. I did a >> little write up on how I did this (but not much detail I am afraid) at >> http://nerdytoad.blogspot.com/2011/04/kefalonia-map.html. >> >> To work on building up a mapnik stylesheet from scratch to get a better >> understanding of how it works, I would suggest starting on a simple >> transparent overlay to display over other map tiles. I put together a few >> slides on my version of how to render map data with mapnik, which you can >> see at http://maps3.org.uk/doc/index.html. If you look at >> http://maps3.org.uk/osm_opendata, the 'about' link has a bit of a descripton >> of how I produced the overlays for that map (another example of a very >> simple overlay). >> >> Both of the above examples use the standard xml stylesheet for mapnik. I >> have been experimenting with a different way of producing the xml stylesheet >> using a different language and a pre-processor called 'carto'. I did a >> little write up at >> http://nerdytoad.blogspot.com/2011/05/rendering-openstreetmap-data-using.html >> on where I have got to - It is much less complete than the full OSM >> stylesheet, and I think I need to learn some of the tricks used in that >> style to make the map look better, but I think it is simpler to see what it >> is doing, so I think I will stick with this for simple things. >> >> Hope that gets you started. Let me know if you get stuck and I will see >> what I can do. The mapnik-users mailing list is a good place to ask for >> help too. >> >> Regards >> >> >> Graham. >> >> On 15 June 2011 14:22, Adam Hoyle <[email protected]> wrote: >> Hi Graham, >> >> Sorry, I got a bit over excited and subscribed to tons of OSM mailing lists >> and so totally missed your awesome reply :-( >> >> Sorry if I wasn't clear - I've successfully got Mapnik installed (did it a >> week or three ago and it was pretty painless as far as I recall), so am >> particularly after a sample config file to start from, particularly one with >> hill contours / gradients / >> whatever-they-are-really-called-outside-the-confines-of-my-head. >> >> Altho' having said that the package that Parveen Arora is putting together >> looks pretty awesome, so maybe I should hold out for that, even tho' it >> looks more targeted for Debian than OS X - I guess if push comes to shove I >> could install Debian in VMware, which I already have on my laptop. >> >> By the way townguide looks rather amazing, so adding that to my (rather >> long) list of things to check out :-) >> >> Thanks for the offer of helping generate the configuration file, not sure of >> the best way to do that tho' as I want something I can start with and hack >> around with and iterate a lot until it's "right". The primary thing I want >> is pubs and post boxes available when zoomed out (ideally the same zoom >> range as footpaths show up on), and if possible the mountain >> gradients/contours - I've seen a couple of maps "in the wild" that use >> these, but not sure how possible/straightforward it is for a Mapnik newbie >> such as myself. >> >> Cheers, >> >> Adam >> >> On 10 Jun 2011, at 10:46, Graham Jones wrote: >> >>> Adam (changed the title of the thread to keep this one separate), >>> The simplest way to do it is to make overlays that are transparent and you >>> can view over another set of tiles. >>> I have done a few before now - there is one visible at http://maps3.org.uk, >>> which highlights historic things over the normal mapnik rendering. >>> I still have the idea to set up something to make the learning curve >>> easier, because I appreciate that setting up mapnik and all its >>> dependencies is quite daunting - there is something on my osm user page >>> about it (grahamjones). >>> >>> If you want to do it yourself, there are a few different sets of >>> instructions - the osm wiki 'mapnik' page is a good start. Note that linux >>> is much easier than Windows (or at least there are better instructions!). >>> >>> I have a set of instructions that work for me at >>> http://code.google.com/p/townguide/wiki/InstallationInstructions. (there >>> may be a minor issue with postgresql authentication that I need to fix). >>> >>> Parveen Aurora is currently working on making a simple package that will >>> install and configure everything for you for his Google Summer of Code >>> project, but you will have to give him a few weeks to get something ready >>> for testing (https://github.com/ParveenArora/MeraMap). >>> >>> If you would like to work out what you would like to render (ie which tag >>> combinations), how you would like them drawn (line colour and width, icon >>> image etc.), I can help you turn that into a mapnik configuration file and >>> generate the map for you on my computer. I think it is better to spend >>> time thinking about the rendering than having to worry about database >>> configuration nuts and bolts. >>> >>> Regards >>> >>> >>> Graham. >>> >>> Regards >>> >>> >>> Graham. >>> >>> On 10 June 2011 10:27, Adam Hoyle <[email protected]> wrote: >>> Sorry in advance - after writing this I've realised I'm possibly heading >>> off on a tangent (I do that). >>> >>> Speaking of the awesomeness of Cycle Map and how that encourages people - I >>> really want an openwalkingtothepubmap, which would basically be a clone of >>> the gorgeous cycle map, but with the coloured cycle routes removed in >>> favour of coloured paths and also pubs visible when quite zoomed out (and >>> prolly post boxes too, but that is probably particularly niche). >>> >>> I'm starting to realise that I might need to roll up my sleeves and do this >>> myself. >>> >>> Every now and then I try to install Mapnik on my Mac, and mostly fail, but >>> I tried t'other day and it worked, so I'm wondering where the various >>> styles that are used on OSM are kept (or even if they are actually >>> available for derivative use) - I'm most keen on cyclemap or something that >>> has gradients, cos as a walker I'm quite interested in whether I am about >>> to walk over a massive hill or not. >>> >>> Can anyone point me in the right direction? >>> >>> All the best, >>> >>> Adam >>> >>> On 10 Jun 2011, at 09:35, Bob Kerr wrote: >>> >>>> I agree with Andy about increasing the number of mappers is essential. >>>> With Cycle map he has increased the interest in the cycling communities. >>>> Getting interest and publicity is very difficult. I can see many other >>>> communities that we could encourage to start helping us, from NHS to >>>> golfers but we have no organised way of doing this at the moment. Using a >>>> bot to replace large sections of data in the UK is going to be >>>> counterproductive or destructive, especially as the UK is now 80% (road >>>> name)complete. However restricting a bot by area to the size of small >>>> villages may help. I believe we can both encourage people to join us and >>>> use the a bot on small areas at the same time. >>>> >>>> Cheers >>>> >>>> bob >>>> >>>> >>>> From: Andy Allan <[email protected]> >>>> To: [email protected] >>>> Cc: [email protected] >>>> Sent: Thursday, 9 June 2011, 16:45 >>>> Subject: Re: [Talk-GB] OSM Analysis New Data and bot >>>> >>>> On Thu, Jun 9, 2011 at 3:42 PM, Jerry Clough : SK53 on OSM >>>> <[email protected]> wrote: >>>> >>>> > In order to get a better level of completeness in the UK what we need >>>> > are >>>> > more mappers. >>>> >>>> Absolutely. >>>> >>>> Everything we do should be focussed on helping get more mappers, or >>>> helping the mappers we have get their jobs done more easily. >>>> Everything that is a direct substitute for having more mappers is, at >>>> best, a distraction from (what I see as) the desired goal. If we have >>>> mappers, and lots of them, then - as we've now demonstrated - we can >>>> get a glorious dataset. >>>> >>>> Note that not everyone here shares the same goals - some people are >>>> focussed on the data, others on the community. It might be worth >>>> examining why we (collectively) have a tendency to discuss the data >>>> all the time and I see very few discussions on community matters. >>>> >>>> I find in most conversations, if the answer is "because we don't have >>>> enough mappers yet" then the solution is not to bypass them with some >>>> form of automation but to get more of them. Unfortunately to most >>>> OSMers, community building seems hard (which it is), and writing bots >>>> or doing imports seems easy (which it's not). >>>> >>>> > A bot is putting short-term gain ahead of our long-term interests. >>>> >>>> Indeed. What's more, all the effort that goes into writing bots, >>>> discussing them, justifying them etc is time that hasn't gone into the >>>> primary goal of recruiting and helping more people to OSM. >>>> >>>> Cheers, >>>> Andy >>>> >>>> >>>> _______________________________________________ >>>> Talk-GB mailing list >>>> [email protected] >>>> http://lists.openstreetmap.org/listinfo/talk-gb >>>> >>>> >>>> _______________________________________________ >>>> Talk-GB mailing list >>>> [email protected] >>>> http://lists.openstreetmap.org/listinfo/talk-gb >>> >>> >>> _______________________________________________ >>> Talk-GB mailing list >>> [email protected] >>> http://lists.openstreetmap.org/listinfo/talk-gb >>> >>> >>> >>> >>> -- >>> Graham Jones >>> Hartlepool, UK. >>> >> >> >> >> >> -- >> Graham Jones >> Hartlepool, UK. >> > > > > > -- > Graham Jones > Hartlepool, UK. >
_______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
