Did you just get a Chromebook, and excited to get mapping with it? You can run JOSM on Chromebook with a little bit of effort. This guide was written for ChromeOS 74.0.3729.159 and up and relies on the Debian Stretch 9 emulator Crostini. As you’re entering these commands, you can copy and paste them from the website to the Debian terminal by using a right click (or Alt + Click if you don’t have an external mouse connected)

Step 1 - Enable Linux Apps

Open the Settings app, and search for Linux. Click “Turn On” to enable Linux support. On the popup installer, click Install. Sit back and wait. When the installation is complete, a Debian Linux shell terminal will automatically open.

Step 2 - Add the JOSM repository

This command adds the JOSM repository to the sources list. echo deb https://josm.openstreetmap.de/apt alldist universe | sudo tee -a /etc/apt/sources.list

Download and register the OpenStreetMap public key. wget -q https://josm.openstreetmap.de/josm-apt.key -O- | sudo apt-key add -

Step 3 - Update the APT repositories and install

This will query updates to all packages, and install josm afterwards. This will take quite some time. Go grab a coffee. sudo apt update ; sudo apt install josm

Step 4 - Run JOSM

Open up JOSM within the App Folder “Linux Apps” from the launcher. It’s possible that JOSM could have too small a font to read on your screen. The fix is to install Java 11 and use UIScaling to render the applet with a larger font. If you wish to fix this and give JOSM a larger font, follow the next steps:

Optional Step 5 - Enable Backports

Debian Stretch doesn’t come with Java JDK 11 by default, but we can enable it by adding the backports software repository.

echo deb http://deb.debian.org/debian stretch-backports main

sudo tee -a /etc/apt/sources.list

Optional Step 6 - Install JDK 11

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Our underpaid team of data wranglers have been working diligently over the last six months to develop and bring forward our proposal for importing addresses statewide into Massachusetts. This has been no easy process, and has many specific concerns which we’ve been working hard to address over the last six months of development for this plan. We have come up with a multiple phase-based import approach which we believe mitigates data issues while providing high quality data to be imported, sought feedback from our local community, and have now submitted our request for comments to the national imports@ list for further discussion before starting the import process.

As a background, we discovered MassGIS data on address parcels available through the 911 data within the state. The raw data consists of points which are located on top of the building centroids, as far as the state is concerned where the buildings are. For multiple building properties, the address point is located in the center of that property. This is workable, but means the data has to be filtered between the two import phases to fix the correlation between the two types of nodes.

This marks a significant milestone within our local community’s mapping development. Importing addresses to every building in Massachusetts is no small task, but the effect on data quality and usability of OpenStreetMap will be significant. The wiki link for our import proposal can be found here: osm.wiki/Import/Catalogue/MassGIS_Addresses

You are invited to provide feedback on our process on imports@. If you’d like to contribute, we need data wranglers and coders. Feel free to reach out on talk-us-massachusetts or #massachusetts on the OSM US Slack.

Over the last couple months I’ve been busy fixing mapping in North Andover, MA, where I currently live. Issues with the mapping here in Massachusetts have largely been because of a lack of addresses, street data, business data, and stagnant notes left on the map for upwards of 4 years or so.

I’ve been very active with a couple projects as of late:

North Andover Addresses and Street Overhaul; Massachusetts Address Import notes

This project is progressively going through all parcels within the town and manually adding each address to the building, plus adding driveways, and assigning building=garage or shed as necessary. Plus, drawing in sidewalks as separate ways and correcting intersections and turn restrictions as necessary. It’s a slow process, because there’s so much to verify and add, and I’m doing this process largely on a block-by-block process, alone. This has gotten massively easier lately, however, as I’ve learned how to use JOSM to some extent, and discussion started about a Massachusetts wide address import, of which I provided details on how to do such an import using JOSM and the Conflation plugin. (Details of the current import effort are documented here: osm.wiki/Import/Catalogue/MassGIS_Addresses) Let’s delve deeper into this…

The Massachusetts Basic Address Points is a database divided by town with POI / point data encoded at the center of building polygons for addresses, however the data for streetnames and housenumbers have tags that need renaming, and all the streetnames are in upper case. We had lots of talk on the talk-us-massachusetts list and discovered several issues: 1. Is the title() function appropriate considering the possibilities for false positives, and how many such positives would there be (McCoy Street, YMCA Way). 2. How would you handle data conflicts with multiple addresses to the same building. 3. How would you split up the data import so that it doesn’t cause havoc on the server?

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I’m a firm believer that maps are more useful with the more data on them as you can put in. Seems logical, right? When I was looking at OSM, and OsmAnd, it appears that the local functionality of the system as far as address and route guidance is completely useless as of right now, primarily because nothing has addresses entered. It’s great that so much roadway and outlines of buildings have been added, but the map is pretty much useless for the end user who just wants to get from point A to point B.

For this reason, I did some digging and was able to find North Andover’s zoning map, which includes property address numbers! (https://northandoverma.mapgeo.io)

I’ve set out to iterate through all of the addresses I can systematically over time and transfer them all into OSM. I’m sure there’s easier ways… some suggested JOSM with a MassGIS address layer, but JOSM is fairly difficult software to use and I don’t quite understand it yet. So far, I’ve been using iD editor, but that has challenges in that anything over about 100 concurrent edits in the current changeset starts really bogging down the web browser, so I have to save often.

The mission: to update all addresses systematically from west to east, to draw in driveways, and to fix misaligned buildings as I go through.

This is going to take some time.