OpenStreetMap

EdLoach's Diary Comments

Diary Comments added by EdLoach

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Martello towers

SK53 mentioned that I’d been trying to locate Tower J in one of the Mastodon toot’s you were tagged in, which was after I read on Facebook about where local tradition says it is (which seemed unlikely to me). The post appears to be in a public group. I discovered this interesting document about the Martello Towers on the east coast of England, and a Google books result suggesting it was sold in 1834 in grounds of 6.5 acres, so was trying to find maps surveyed between roughly 1805 and 1834 which might have shown it. I found earlier and later, which I added as links in replies to one of my comments on the Facebook post. The Facebook post comments also suggest the land was used to expand Walton-on-the-Naze, and the bricks were used in various buildings (Martello Cottage and 1, 3, 5 Newgate Street in 1836).

It seems strange to me that towers G, H and I only survived until 1819.

Tower B was demolished in the 1970s (according to one site I read) and before that was in private ownership and was used for a time as a radio astronomy observatory, with photos on the 5th page of this article about Frank Hyde and based on side by side maps at NLS that show the tower, it would have been about here.

Martello towers

I have updated three more in Essex this morning from historic=tower to historic=martello_tower, adding building=tower if that was missing. In case they need any other tidying they are https://www.openstreetmap.org/way/129126566 https://www.openstreetmap.org/way/288480830 and https://www.openstreetmap.org/way/72501575

Seen on my (virtual) travels 2. Modern Stone Circles

We have a modern stone circle near here, built as an April Fool’s joke, which I hadn’t mapped until reading this diary entry but have viewed from a nearby public footpath a number of times. Now added with the man_made=stone_circle tag.

AED Survey

Thanks for this post. I was unaware of openaedmap.org and wondered how to change the colour of the AEDs shown (as all the ones near me are currently grey). It seems to be controlled by the access tag.

const accessToColourMapping = {
  'yes': 'has-background-green has-text-white-ter',
  'no': 'has-background-red has-text-white-ter',
  'private': 'has-background-blue has-text-white-ter',
  'permissive': 'has-background-blue has-text-white-ter',
  'customers': 'has-background-yellow has-text-black-ter',
  'default': 'has-background-gray has-text-white-ter',
};

I know I have many that should be yes and some that are in stores so should be customers, so when I get chance I’ll review them.

Apple Data Team #ADT multiplying Nodes on Coastlines

I’ve recently replaced (in England) a couple of beach multipolygons by beach areas (I was chopping the large beach up to add different names to different sections). It was really easy to keep pressing F in JOSM to follow an existing way that I was joining the beach to, when relevant, which seems to work in iD too based on a very quick test just.

How to properly use the capacity tag on campsites

I see that you’ve also updated the capacity and camp_site wiki pages, which is what I was going to suggest. I think it is great that someone who understands campsite mapping has seen the problem with the capacity tag being ambiguous and has suggested better tagging to help improve the data.

Amusement park modifications

I guess you mean this community centre.

Off to The Centennial State

Being stuck at work at a desk, reading this diary entry has made me a bit envious. It also looks like we can also follow your travels by your edit history, as you improve OpenStreetMap as you go.

Pubs "closed due to Covid"

Looking at that lua code there are so many decisions I see you have to make for rendering. Even in this case where do you decide to draw the line on tag value usages (e.g. the 12 Temporarily closed and 10 Closed usages might also quality for this rendering), and that is only in the first few pages (I did briefly wonder what “closed; by appointment only” - 2 usages - means; is it closed or is it open by appointment only?).

Bus stops in the UK

Found it

Bus stops in the UK

Usually if not verified, yes, though I have found some flagged as “del” which were part of an active bus route. In that case I add the naptan:status=del (or whatever it is called naptan field) in as a reminder. In the first instance I tried to point out to the relevant bus company that the stop on their timetable was where a road had been diverted and the old stop location was now on a shared use cycle path nowhere near where a bus could go, but they just told me where the new stop was without seeming to grasp I was telling them their timetable was still listing the old one (by atcocode).

Bus stops in the UK

On the flip side, I’ve been maintaining local bus routes, and if a stop hasn’t been verified I’m happy to update it based on the current naptan information safely assuming the old information is out of date and not ground verified. If it has then I’m more likely to add a note to say a resurvey is needed to check current name (with a few exceptions such as stops verified about 10 years ago that were named after say a pub that has now been gone a number of years and replaced by say a supermarket and the naptan name now reflects the store name rather than the ex-pub name).

Footpath and Bridleway tagging in England and Wales - a personal view

Harking back to the days before designation=public_footpath et al. there were some local footpaths which had been mapped with access=yes rather than foot=yes - I noticed these when one of the popular apps at the time added an invalid routing note on one such path (or more likely bug, in pre-notes days) as it was (perhaps reasonably) assuming access=yes included motor vehicles. I think I’ve now sorted all of them but was finding them for a couple of years where a longer path had been split and I’d missed the middle section (or even a short section over a footbridge).

Thanks for the link to the proposed tagging table in the wiki. I’ll consider tagging like that in future (I’d normally reserve designated for the blue and white signs, but I can see how they could be used for public footpaths etc.)

addr:county tag within Somerset

City and postcode in the UK aren’t generally mapped as boundaries.

I believe county is no longer part of the Royal Mail’s official address, so I wouldn’t consider adding an addr:county tag (though removing them where you find them is only going to bloat the database history too)

Tennis court surfaces

I’m not sure how after reading wikipedia you decided 4 surface tags are sufficient when the article says the ITF classify into 9 types (with the 9th being “other”).

Surface code Type Description
A Acrylic Textured, pigmented, resin-bound coating
B Artificial clay Synthetic surface with the appearance of clay
C Artificial grass Synthetic surface with the appearance of natural grass
D Asphalt Bitumen-bound aggregate
E Carpet Textile or polymeric material supplied in rolls or sheets of finished product
F Clay Unbound mineral aggregate
G Concrete Cement-bound aggregate
H Grass Natural grass grown from seed
J Other E.g. modular systems (tiles), wood, canvas
A little shop contact page ...with OpenStreetMap

It wasn’t so much about noticing it elsewhere, but when I tried doing pins for this map I gave up trying to work out offsets and settled on filled circles instead.

A little shop contact page ...with OpenStreetMap

I’ve not checked, but is the marker position issue that the marker image has a pointy bit at the bottom, but the co-ordinates are for the centre of the image, causing a slight offset?

Ward Boundaries in Nottingham

Can’t work out how to edit my last comment, but I suspect it is the opendata plugin that adds shapefile support https://wiki.openstreetmap.org/wiki/JOSM/Plugins/OpenData

Ward Boundaries in Nottingham

I don’t know whether I have a plugin installed or not, but JOSM seems to have an option to open .shp files. I don’t know how or whether it will cope with the Nottingham shapefiles using OSGB projection. When I last used shapefiles some years ago the instructions at https://wiki.openstreetmap.org/wiki/Using_OS_Shapefiles were helpful

At what point is a driveway long enough to be added to OSM?

I don’t usually map driveways, but I can see if you wanted pedestrian routing (perhaps for those with a visual impairment) to the front door of a property then you probably would want the drive mapped, and perhaps even a short footway from drive to door for connectivity.