Glassman's Diary | OpenStreetMap

Glassman's Diary | OpenStreetMap
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Glassman's Diary
Recent diary entries
Safe Routes to School
Posted by
Glassman
on 13 February 2026 in
Purpose
Safe Routes to School is a program designed to help parents encourage their
children to walk and bike to school safely, while promoting healthy engagement.
In some locations, walking or biking to school is a child’s only means of getting to school.
My goal is to help parents find the best routes to school and to assist them in working with local
governments to improve safety. But we need more volunteers to help improve the data.
What We’re Building
Pedestrian and bike maps
Child-safe routing opetions
Walking and biking isochrone (walkshed) tools
Clear tutorials on how to map for pedestrians and cyclists
Tools SRTS groups can use in their local communities
Pedestrian and bike maps
Bike maps already exist. Not only does OSM offer two different map layers for cyclists, but there are several apps available. Pedestrian maps are a different story. While there are some pedestrian maps, such as the University of Washington’s Taskar Center for Accessible Technology’s
AccessMap.app
, they are limited. What is needed is a tool that parents can use to find a good walking route to school, as well as a tool that can help improve pedestrian mapping, much like OpenStreetMap US’s
OpenTrailMap.us
. The rendering should show pedestrian ways, crossings, accessibility features like tactile pads and kerb ramps.
Routing Engines
OSM has some great routing engines. The user interface will likely need to be improved so that features can be added to avoid. For example, railways may be dangerous for children to cross. By allowing the addition of features to be avoid, it’s possible to provide a safe route.
Walking and biking Isochrones (Walksheds)
See full entry
Location:
Mount Vernon, Skagit County, Washington, 98273, United States
2020 Washington State (US) New User Report
Posted by
Glassman
on 31 January 2021 in
New Users in Washington State
2020 saw 746 new users in Washington State make their first edit. Down just slightly from the previous two years. Anecdotally it appears that we had fewer SEO edits than in past years.
Welcome Message
Welcome messages were sent to 696 of those new mappers, up from last year. Only 26 people replied at least once to the welcome message. I should note that the welcome message doesn’t ask for a reply. Of the new users, 84 replied to changeset comments. A total of 1784 changeset comments were made on the new users edits. Not all of these changeset comments required a reply. Tips were left on 351 changesets.
Edit Quality
I tried to review all of their edits before I send out the Welcome message. Some days when I had other more pressing chores the reviews were just a quick check. In some cases I left a
Tip:
in the changeset comment on better mapping practices. If the edit was harmful I either reverted or fixed their edit. Harmful could mean that the new mapper unintentionally dragged a node or disconnect a road.  There were eight cases of vandalism which were all reverted.
TIPS
As mentioned above, I left 351 tips. Below are the most common tips left.
See full entry
2020 Editor Usage
Posted by
Glassman
on 8 November 2020 in
This is a quick count of the various editors used by mappers in 2020. iD is on top with 7.6M edits followed by JOSM with 5.6M. The data was collected by looking at
tags->created_by
in the changeset database.
Editor
Count
iD
7636890
JOSM
5644149
StreetComplete
414353
MAPS.ME
160365
Go Map!!
122639
OsmAnd
118465
Potlatch
115427
Vespucci
100327
Other
90879
osmapi
73587
Refill Südtirol
22612
Services_OpenStreetMap
16985
Merkaartor
13137
autoAWS
11626
All the Things
10548
caresteouvert.fr
7930
Go Kaart!!
7567
FireYak
6956
OsmHydrant
6564
MapRoulette
3206
ArcGIS Editor for OpenStreetMap
2611
Rosemary
2067
Gnome Maps
1437
Mapping Ballot Drop Box Location
Posted by
Glassman
on 22 September 2020 in
The US 2020 Election is just 41 days away. Like some states my home state of Washington is all mail in ballots. But you don’t actually have to mail in your ballot for it to be counted. You can also drop your ballot off at any one of the counties ballot drop box locations.
The county has a
map
of all their locations but it’s not always clear exactly where the drop box is located. So what’s a OSM mapper to do? Go out and map them. The last two locations, Concrete and at the Sauk-Suiattle Tribe were added this afternoon. The Sauk-Suiattle is located in the Southeast portion of the county near Darrington, WA. While much of the county lies to the east, hardly anyone lives there.
I encourage everyone to get out and map polling stations and drop boxes where appropriate.
Tagging is simple
amenity=polling_station
plus
polling_station=ballot_box
for drop box locations. Additional tags can include
operator
and
opening_hours
See full entry
2019 Washington State, US New User Report
Posted by
Glassman
on 12 January 2020 in
2019 saw 760 new mappers in Washington State, again down slightly from previous years. Not a trend we want to see continue. This includes the late influx of Tesla’s mappers that are mapping parking lots so they can summons their Tesla. Don’t think badly of Tesla owners in Washington, it rains a lot. I only wish I could summons my old car.
Welcoming messages were set to 679 new mappers. The message remained the same even though I keep thinking of changing it. Guess there must be something to consistency or is that procrastination?
I was able to identify 7 of those new editors as paid mappers. It was fairly easy since they typically have thousands of edits each. Paid mappers are making significant contributions to OSM. Only Amazon has significant number of edits in Washington. From my experience they are making quality edits. I’ve caught a couple of errors, certainly less that what I’ve made. They are quick to respond and fix the problem.
For the number crunchers here are some of the stats:
760 new users including SEO spammers
679 welcoming messages set with 31 replies (4.6%)
344 users were sent one or more changeset comments (50% of new users)
62 new mappers responded to a changeset comment (18%) It should be noted that not all changeset comments expected a response. For example, if the changeset requested a review and that review was good, a response wouldn’t be required.
New mappers contributed over 40K edits since joining OSM. However, paid mappers contributed nearly 32K of those changesets.
Not counting paid mappers, new mappers edited a total of 1990 days
See full entry
2018 Washington State (US) New User Report
Posted by
Glassman
on 6 January 2019 in
2018 saw 794 new users in Washington State, up just slightly from 787 in 2017.
Of those nearly 800 new contributors, a welcome message was sent to 693 users. I gave up at some point sending to obvious SEO editors since they never respond or for that matter bother read any OSM wiki articles on how to edit.
Of those that did receive a welcome message, 27 replied. This number is down considerably from previous years. However, they have been responding to changeset comments. 82 new users replied to a changeset comment that either I or someone else left. One feature I’d like to see added to the changeset comments is to be able to get notified when I don’t get a response. It usually means what I suggested fixed never got fixed.
The
Welcome Message
is relatively unchanged from previous years. I do think it’s time for a change. I’d like to add some hints on what and where to map. It’s on my todo list for 2019.
I want to thank Wille Marcel at Mapbox for OSMCHA. One of the latest improvement is to add users to a personal watch list. I recently started adding new users that have questionable first edits. Okay - the edits aren’t questionable, they are just bad. OSMCHA now allows watching for repeat vandalism.
If you are welcoming new users, I’d like to hear your experiences. Just drop a comment below.
Happy New Years,
Clifford Snow
SEO Work Hours
Posted by
Glassman
on 27 November 2018 in
There is one Search Engine Optimization (SEO) company that keeps adding incomplete data in the US. They never respond to inquires or fix their errors. They add duplicate nodes, use the wrong syntax for opening_hours, leave a lengthy description and never tag the type of business.
Looking at their history two things stand out. First their locale is either en:US or en:GB. Could be two different locations or more likely different users. The other is when they make their edits. Below is a breakdown of their edits since Jan. 1, 2016 :
UTC Hour Edits
Changeset timestamps show that edits start around 04:00 and end before 14:00. My guess is the location is 3 to 5 hours ahead of the UTC.
Anyone want to venture a better guess?
Having the IP of the users to get a better location would be nice.
Anyone with OSM system admin want to assist?
Creating Vector Tiles for use with iD
Posted by
Glassman
on 29 August 2018 in
Version 2.11.0 of the iD editor now has the ability to display vector tiles as overlays. With help from a bunch of people I was able to create and display a vector tile overlay for use in iD. I want to pass along what I learned to help others.
Creating Vector Tiles
So you have some data you would like to display in iD to help editing. I used Florida State Trails data which is open data on the Florida State open data site. The licensing is suitable for OSM. Once you download the data, I recommend reviewing the data using
QGIS
to see what it look like. QGIS shows all of the data visually. Adding an OSM baselayer helps understand how the data would fits with OSM. QGIS will also convert the data to a GeoJSON needed for the next step, which is coverting the GeoJSON to a Mapbox mbtiles files. Lets look at the steps in more detail.
Download the data and open in QGIS.
Convert to a GeoJSON. If the data looks good in QGIS, save a copy as a GeoJSON using the Save As in the Layer menu option. If the data isn’t in WGS84 (EPSG:4326) projection QGIS will allow you to change the projection for your new file.
Use
Tippecanoe
to convert the GeoJSON to an mbtiles file
tippecanoe -o yourdata.mbtiles yourdata.geojson
Serve the data as a Vector Tile
The data is now ready for a Vector Tile Server. I used
Mapbox’s Studio
to load and serve the data.
See full entry
Alaska Marine Highway
Posted by
Glassman
on 29 April 2018 in
I’ve updated the Alaska Marine Highway. The southern most end is in Bellingham, Washingtonm just up the road from me. It didn’t appear to connect to either Valdez and Seward that the US Bike Routes indicated that it should. A number of ferry routes were missing or incomplete which was started me on the quest to fix the problem. It still doesn’t connect to Seward, the jumping off point for USBR 97 to Bellingham. As far as I can tell, Seward doesn’t have a ferry terminal. It does connect to USBR 95 in Valdez.
Work still needs to be done. If anyone wants to help, here is a list of items that need help with:
add or update the cargo= tag to indicated what the ferry carries, such as cars, pedestrians, etc.
Check each ferry terminal to see if they have routes that are missing
Verify that the route is actually routable.
See full entry
Location:
Edgemoor, Fairhaven, Bellingham, Whatcom County, Washington, United States
Search Engine Optimization Destructive Edits
Posted by
Glassman
on 5 February 2018 in
Normally SEO firms are accused of adding garbage to OSM. The worst offender, what I refer to as “SEO Updated” is a prolific firm adding poorly tagged companies. Fro the week of Jan 28th through February 3rd, SEO Updated added 27 businesses. The only good news it that they only seem to operate on weekdays. I believe DWG is fully aware of their operation.
Another offender came to my attention. This SEO firm, Milestone Inc. in Santa Clara, CA. is not only adding poorly tagged companies but they are deleting existing building outlines with some of the same information they are adding, but only as a node. Like SEO Updated, each business has their own user name in almost the exact same format. Another similarity, they don’t respond to changeset comments or messages.
Their Operations VP has not responded to my messages nor has one of their customers, Best Western Hotels. So today I’m going on Twitter to shame them into responding. I could use your help. Please
retweet
or post your own to @milestonemktg. Please use the hashtag #DestructiveSEOedits.
Clifford
Proposal - OSMF Should Adopt a Code of Conduct
Posted by
Glassman
on 2 December 2017 in
OpenStreetMap is one of the few open source initiatives that operates without a formal Code of Conduct. Many [1] of the large open source projects have adopted a Code of Conduct for their mailing lists, forums and conferences.
Why would we want to have a formal standard for contact? OpenStreetMap longevity depends on our being able to attract and keep new mappers, developers and third party users. Good behavior means more people feel comfortable engaging in community discussions. Bad conduct not only drives people away but can lead to giving OSM a bad reputation. Our reputation is key to raising funds needed for operation and growth. The OSMF Board has a fiduciary responsibility to protect our project. Adopting and enforcing a Code of Conduct is a step in that direction.
[1] Some examples of CoC guidelines are:
Be respectful
Be friendly and patient
Be civil and considerate
Be collaborative
Assume good intentions.
Respect time and attention
Disclose potential conflicts
Take responsibility for our words and our actions
Be welcoming
Be careful in the words that you choose
Discriminatory remarks based on stereotypes
Violent threats or language directed against another person.
Discriminatory jokes and language.
Posting sexually explicit or violent material.
Posting (or threatening to post) other people’s personally identifying information (“doxing”).
Personal insults, especially those using racist or sexist terms.
Unwelcome sexual attention.
Repeated harassment of others. In general, if someone asks you to stop, then stop.
Deliberately spreading FUD (Fear, Uncertainty, Doubt)
Advocating for, or encouraging, any of the above behavior.
Adopting a CoC is just one step in the process.
If we only post the CoC when members sign up on a mailing list or attend our conferences, nothing will change. Instead the Board should:
See full entry
Location:
Mount Vernon, Skagit County, Washington, 98273, United States
POI Completeness
Posted by
Glassman
on 27 March 2017 in
ramyaragupathy
asked me recently how well I thought Seattle was mapped. One of the areas was very broad, POI’s which makes answering the question very difficult. Thinking about the question lead to what outside data source could we compare to OSM to get a sense of completeness.
I stumbled across the King County Health Department
Restaurant Inspections.
Every restaurant inspection, going back many years, is available in the counties open data repository.
The data needed some massaging, food inspectors seem to think that they shouldn’t limit themselves to just restaurants but any business that serves food, including schools, company cafeterias, the fried chicken (ugh) found in mini marts and food trucks. After removing businesses that didn’t match amenity=fast_food or restaurant or cafe it appears that OSM has 1,714 food service businesses vs. 3,680 inspected by the county or 47%, slightly less than half.
The actual results are most likely somewhere near 47% but OSM many have some closed businesses and the county’s list may be over stated (I may have keep businesses that should have been excluded.)
That brings up the question - what to do with all of the county’s data. It’s definitely not something I’d like to see imported, but it would be nice to see better coverage. What are your recommendations?
Clifford
2016 Washington New Users Report
Posted by
Glassman
on 9 January 2017 in
This is the second annual results report on welcoming new mappers. 2016 saw a large increase in new mappers in Washington State over 2015. Also a record number, 403, welcome messages sent. Last year I
reported
sending 106 messages with a 9% response rate. This year the response rate was 7.4% which I partially attribute to the larger sample size and to the increase in MAPS.ME users who seem to never respond.
Recently I starting using
Toby Murry’s
ChangesetMD
tool to help identify new users. While I’m still using the IRC-Bot to identify new users, I expect to switch over to using minutely changesets with Toby’s ChangesetMD tool.
Using the new tool I was able to start capturing some new data.
Total new users in Washington State = 562
Welcome Messages Set = 403
Responses received = 30
Response rate = 7.4%
Percent of new users getting a Welcome Message = 72%
Total number of changesets by new users = 14,119
Editor Used
iD 474
MAPS.ME 53
Potlatch 18
JOSM 5
Go Map!! 4
OsmAnd 4
Rosemary 2
Gnome Maps 1
Vespucci 1
Some interesting statistics
Average number of edits by users that received a Welcome Message = 29.0
Average span [1] of days editing by users that received a message = 17.4
Average number of edits by users that did not receive a Welcome Message = 15.2
Average span [1] of days editing by users that did not get a message = 13.6
The numbers are encouraging me to continue to send Welcome Messages to new users. I plan to add a section with suggestions of what to edit. Cities like Seattle have quite a few features already mapped which might discouraged new users. Conversely, rural cities are pretty barren which can be just as discouraging.
Check out my current process on
GitHub
which includes my updated Welcome Message which includes a link to tips for Pokemon Go users.
[1] span = the number of days between first edit and last edit.
Clifford
Retaining New Users
Posted by
Glassman
on 12 December 2016 in
This is a blog post on my efforts to connect with new users. OpenStreetMap adds new users at a surprising rapid rate. If only they would stick around. So what can we do to increase their longevity? Not have extra money, bribes are out. So is swag, not that I have any of that either.
Right now I’m giving new users thumbnail information on OSM and inviting them to join an OSM Meetup group. After the new year when I’ll pull together some statistics to see if information alone is useful or if I should try another approach.
What else can I try?
Challenges
Suggestions of what to map
Survey for new users
New User Edits
Posted by
Glassman
on 26 November 2016 in
One of my goals is to increase the number of mappers in
Washington State
by
contacting
them after their first edit with suggestions to help them get involved. My message was taken from the Brussels community. I can’t say it helps keep people mapping but it certainly doesn’t hurt. At least no one has asked me not to send them messages. (Most just ignore me.)
Because my
process
is manual, I look at every first edit and fix many of them. Those first edits often have common quality errors. I don’t believe they are from bad users, but from a process that could use improvement. We could insist that new users complete a course before they are allowed to edit. But that isn’t going to get us new mappers. Having existing mappers validate new users edits takes time away from their normal mapping.
When I do fix an edit, I include the change in the Welcome message. Occasionally I’ll leave a changeset message when I’m not sure what they were intending. Originally I was leaving a message and not fixing them, but after realizing that many didn’t go back to fix the problem I just started to do it myself.
I tried to look at this from a quality improvement perspective. First collect data then define the problem and finally look at solutions. My new mapper process has been running for over a year. While I haven’t done a proper job of documenting errors, something I’d like to do, some just keep reoccurring. Today I’m just focusing one one.
Problem Statement
New users edits do not include the lack of a tag to describe the business.
For example, someone added an insurance office. The tag included the name, address, and phone number. Occasionally they will add a tag
keyword
to indicate what the business does. But no
office=insurance.
To the editor, this looks a good edit.
The developers did fix the problem of tags with just name=. It now notifies the user that they need to enter more information. We now need to take this to the next level.
See full entry
New Users
Posted by
Glassman
on 14 January 2016 in
I’ve been sending message to new users that are in our meetup area, inviting them to join our meetup. I also offer to answer any OSM questions they have. Since Jan 2015 I’ve sent 106 messages. From the new users, I’ve received responses from 10 new mappers. That’s a 9% response rate.
Not sure why the response rate is so low. A couple of possibilities come to mind. First, I don’t ask for a response. While I do invite them to join our Meetup Group, it is impossible to find a match between OSM user_id and Meetup nickname. Some could have responded by joining the meetup group. The other possibility is that I need a better welcome message. There is a third possibility but for now I’m not going there.
Work in progresssss
Location:
Mount Vernon, Skagit County, Washington, 98273, United States
Welcome Message
Posted by
Glassman
on 3 November 2015 in
The OSM Welcome message could use some changes to see if we can encourage more participation from new subscribers. The current signon process is quick and easy. (At least if you don’t read all the legalese in the
Agreement.
) My goal is to build a welcome message that encourages more participation and mapping. I invite everyone to share their thoughts on what should and shouldn’t be in the message.
Listed below, in no particular order, are some of my thoughts
OSM Philosophy
Code of Conduct
Invitation to join the OSMF and local chapter
How and why to donate to OSM
Where to meet other mappers
A link to HOT’s
LearnOSM.
If you’d like to help, just drop me a line.
If it has been a while since you signed up for the first time, below is the current process as done on a desktop computer. Not sure what it looks like on a mobile device. The last screenshoot is the welcome message. What is your opinion; can it be improved?
Initial Sign up
Agreement
See full entry
Seattle Building Outlines
Posted by
Glassman
on 28 March 2013 in
Completed merging Seattle building outlines with King County E911 addresses. The result is 3 merged .som files for each neighborhood. The original Seattle building outline file contains outlines outside of Seattle that still need merging.
JOSM Training
Posted by
Glassman
on 29 January 2013 in
14 people showed up to learn how to use JOSM to import addresses into OSM. The training ran from 1PM until 4:30 when most everyone adjourned to the pub up the street.
Street just changed from two way to one way
Posted by
Glassman
on 27 May 2011 in
I was on the way to a meeting downtown taking my usual route. Entering the downtown area my normal route was now one way, going the wrong direction. On the way back I discovered that the street was just converted. Workers were in the process of redoing the signal lights. The lanes had already been repainted.
I made the change to OSM. Certainly faster than any of the commercial maps. However, the street has an entrance to I5 express lanes. These are time dependent. In the morning they lead into the city and out in the afternoon. But I can't find anything on the wiki that tells me how to show the TOD direction.
Since I'm new I'll ask on the newbie mailing list.
Location:
Central Business District, Belltown, Seattle, King County, Washington, 98101, United States