OJW's diary
Recent diary entries:
Just some roads around hotelin Dublin. There are more unnamed roads nearby
one interesting feature that's difficult to map - there are several roads which are unexpectedly difficult to cross given their size (no traffic islands, no pedestrian lights anywhere, and views obstructed by the curve of a bridge)
Coordinates:Posted by OJW at Sat Jul 19 12:55:59 +0100 2008
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New houses
So I show the OSM website to someone at work today, and their first response is "my street isn't on the map"
This is weird - the person lives in Bedford which is within range of at least 2 OSM mappers. So what went wrong?
Well it turns out that they live in an estate that was still a muddy construction site just 2 years ago when the area was last surveyed. Since then it's become a housing estate with loads of dodgy modern houses in various stages of construction.
So I went to visit and made a map of the area. But watch out -- something which is a cornfield one day may be someone's house the next day, and if you only visit the place once you might miss it...
(use osmarender layer to see latest maps, while mapnik is still showing old maps)
Coordinates:Posted by OJW at Thu Jul 17 23:54:21 +0100 2008
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SOTM08
Uploaded my notebook scribblings from the OSM conference:
http://wiki.openstreetmap.org/index.php/User:Ojw/sotm08
Coordinates:Posted by OJW at Thu Jul 17 23:35:35 +0100 2008
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Dublin Temple Bar
OK, so wandered around Temple Bar area of Dublin at the weekend, just need to add those to the map now. I got a bunch of Irish-language street names -- is there any name:ga=... renderer that will display them yet?
Coordinates:Posted by OJW at Thu Jul 17 21:28:13 +0100 2008
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Bletchley to Bedford, national cycle route
Just back from the cycle ride - we aimed to get part of the the National Cycle Route 51
http://wiki.openstreetmap.org/index.php/Bletchley_to_Bedford_cycle_ride
Hopefully we have recorded all of that cycle route which exists. The round-trip distance (for me) was 65 miles. Shaun McDonald is (as of 8pm) setting-off for his return trip cycling back to Bletchley, so wish him luck getting back okay.
Coordinates:Posted by OJW at Sun May 18 21:03:33 +0100 2008
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Lawrence Livermore National Laboratory
Building outlines from aerial pics. (select the osmarender layer)
Still can't find a good PD sketch-map of what all the building names are. Anyone who works there want to help?
Coordinates:Posted by OJW at Fri May 09 19:41:28 +0100 2008
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Wind turbines
Looks like the wind farm has rendered on potlatch.
The proposed tag: power=generator; power_source=wind doesn't have any effect yet
http://wiki.openstreetmap.org/index.php/Proposed_features/Power_plants
Using man_made=power_wind works on mapnik
Neither are shown on osmarender layer - this would be quite useful, as you could see them without waiting a week for mapnik
I think the location might be this one?
http://xahlee.org/Whirlwheel_dir/livermore.html
Coordinates:Posted by OJW at Wed Apr 30 13:18:30 +0100 2008
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Californian ditches
Just tracing some water features around what I guess must be the california aquaeduct. Wikipedia is quite a help in discovering the names of some things. Apparently we might have some government data source available for these, which would be better than tracing?
Coordinates:Posted by OJW at Mon Apr 28 21:52:46 +0100 2008
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Looks a lot better at z18
It's difficult for the renderers to do justice to a junction like this, where the right-hand lane of an elevated trunk road just disappears into the earth, emerging at ground level in a different direction.
In fact, this whole section of road is a nightmare to navigate around, where an incorrect lane choice can send you in unpredictable directions. The 'sliproads to exit and normal lanes to continue' convention doesn't apply...
Coordinates:Posted by OJW at Sun Mar 16 12:26:28 +0000 2008
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University of Nottingham main campus
I've traced some buildings on the University of Nottingham main campus from Yahoo imagery, filling-in names from memory (and with a few hints from the Wikipedia article)
http://en.wikipedia.org/wiki/University_of_Nottingham_Halls_of_Residence
It adds a new tag:
place=hall_of_residence
which may be worth rendering on campus maps.
In the meantime, I've lablled the residential buildings with the name of their hall (e.g. 10 buildings all with name=Lenton and Wortley, which shows-up on the map)
There are parks and woodlands marked inside the campus. The area tagging causes some problems:
To make a woodland appear above the generic "landuse=university" purple area, we have to use the layer attribute. But that makes some paths disappear 'under' the woodland. I don't want to put a higher layer on those paths just to make them render, since technically they're ground-level paths.
Multipolygon relations are being used for courtyards within buildings.
http://wiki.openstreetmap.org/index.php/Relations/Multipolygon
Coordinates:Posted by OJW at Sun Mar 16 12:08:59 +0000 2008
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