[Talk-GB] OSMUK walkers map - GitHub repo and demo now available

Nick Whitelegg nick.whitelegg at solent.ac.uk
Wed Dec 30 17:13:02 UTC 2020

Hello Andy,

Thanks for your comments.

To be honest, maybe I was expecting a little too much that possible contributors would do a bit of research on what's required, for example the format of a Tangram style file, which is the main thing which controls what is on the map; so that if people wanted to add new things to the map or tweak others, they'd research how to do this in Tangram and have a go at tweaking the file.

You are right that I have said nothing about how I import the db though. I do use a modified osm2pgsql style file for the version on free-map.org.uk, though the version on the OSMUK server uses the unmodified file. I have now added the scripts I use to create the database to the repo.

Issues like the slowness of the map are down to the fact that I do not yet do any caching, plus both servers I use (one donated, one paid-for by myself) are fairly low on memory. Again, the whole point of the demo as it stands is a quick and dirty proof-of-concept to experiment with vector tiles.


From: Andy Townsend <ajt1047 at gmail.com>
Sent: 30 December 2020 15:58
To: talk-gb at openstreetmap.org <talk-gb at openstreetmap.org>
Subject: Re: [Talk-GB] OSMUK walkers map - GitHub repo and demo now available

On 30/12/2020 10:13, Nick Whitelegg via Talk-GB wrote:

At some point, at Adam's suggestion, I will probably setup a poll on Loomio to gather ideas for features.

Hi Nick,

Thanks for this, but I suspect that a bit more information will be needed by anyone who might be thinking about helping with this.  Currently the "What's needed" section of the readme is a bit "Monty Python: how to play the flute" ( https://www.youtube.com/watch?v=-1sM29zGxeo ).  As just one example, I'd expect that the osm2pgsql database needs to be imported with a particular style file to decide which columns are created.  Maybe that's the default osm2pgsql one, maybe it's a different one such as https://github.com/gravitystorm/openstreetmap-carto/blob/master/openstreetmap-carto.style , or maybe it's a cut-down one to minimise database size - but without that information, no-one is going to be able to reproduce what you currently have at or https://www.free-map.org.uk/ and investigate why things are as they are there - for example why are some things shown and not other, why does the screen only take up a quarter of the browser window, why is it so slow (is that a server or a client side issue)?

I appreciate that this is only designed to be a proof of concept - but surely the purpose is that people will see it and say "that isn't exactly what I was looking for but I can change it to do X, and Y, and Z"?  I don't think that that's really possible right now.

Best Regards,


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