iOS issue? - FIXED

I pushed a code change to the site and, for some reason I haven't been able to determine yet, the site is failing to initialize properly when launched directly from the homescreen on iOS. If you load it in Safari it's fine.

I'll fix ASAP.


Fixed. I just needed to ensure that older versions of the scripts weren't used.

I also noticed and fixed an issue with "Add to Home Screen" - if you have moved the map from the default location before you pick "Add to..." it would embed the new location and options in the saved URL, and every time you open the map in "standalone" mode it will return to those coordinates; this annoying if you were at a random location/scale and particularly annoying if you had "Save Location" checked. Now the saved URL parameters are ignored if running "standalone".



Save Location & Save Preferences

If you're a long-time user of the site, you may not have noticed some options that I added recently under the settings (gear) menu:

  • Save Preferences
  • Save Location
If selected, these use your browser's local storage mechanism to persist the settings options (style, what to show, etc) and location (what coordinates are centered in the view) for the next time you visit the site. These options are particularly valuable on devices like the iPhone where you can "Add Link to Home Screen", so that if you switch away from the app and back again you won't lose your context.

These days, I find I usually check the options "Filled Borders" and "Dim Unofficial Data" since I want to look for flaws like missing borders or incomplete routes and prioritize corrections, but you may have different options you want to keep.

Anyway - use 'em if you want 'em. Each device you use to access the site will "remember" your settings differently. If you check "Save Location" but want to get back to an overview of Charted Space, click the "Home" button.



Real Milky Way

If you like the Traveller Map site, you might like http://galaxymap.org/ which attempts to explain the real Milky Way galaxy.

Just be aware that we have limited information about the large scale structure of our galaxy.

Oh, and real astronomers make orient Coreward (from the sun) down. Ω


Judges Guild Gateway Quadrant Sectors

Before the Atlas of the Imperium, in the days of GDW's land grants, the prolific publisher Judges Guild published four sector supplements defining the Gateway Quadrant:

While the quality of the publications was not necessarily up to the standards of GDW's Supplement 3 and Supplement 10, or necessarily of other licensees, it was a unique look at the wilds on the Trailing edge of the as-yet ill-defined Imperium.

The Atlas and other later works decanonized the Judges Guild sectors - only the names of three of the four sectors were retained (with Maranatha-Alkahest replaced by Gateway). But that doesn't mean that they're not fun places to explore!

Useful resources:

To preserve these for posterity, I've added them to the TravellerMap.com site. And to avoid overwhelming the UI with "which setting are you interested in?" clutter - and honestly, to make it easier to implement - I've simply placed the sectors far away from charted space. They're visible in search, or you can jump right to them:

Judges Guild Sectors - Gateway Quadrant


  • Data for Ley Sector from Galactic - transcription and corrections were done by Andrew Moffatt-Vallance 
  • Data for Maranatha-Alkahest Sector from Gateway Quadrant Wiki - transcriptions done by Jeff Rients, with additions and corrections by Joshua Bell
  • Data for Glimmerdrift Reaches Sector from Galactic - transcription and corrections were done by Andrew Moffatt-Vallance 
  • Data for Crucis Margin Sector from Galactic - transcription and corrections were done by Robin Ludbey




Apropos of nothing, stats for the last month, stuff over 1%. These are stats for site page loads - i.e. hitting the main map page, the poster/booklet makers, or anything in docs/.  Any amount of time spent on the map itself counts as one data point.


  • United States: 56%
  • United Kingdom: 13%
  • Germany: 6%
  • Australia: 5%
  • Canada: 3%
  • Japan: 3%
No real surprises there. English-speaking countries dominate, but strong showing in Germany thanks to long time support and recent innovation by 13Mann. Japan has a history of Traveller fandom as well (and awesome box art!)

Operating System:
  • Windows: 65%
  • iOS: 14%
  • Macintosh: 9%
  • Android: 6%
  • Linux: 4%
Windows use continues to decline, and mobile use is growing. Macintosh beating out Android is interesting. But the answer lies further down...

  • Chrome: 38%
  • Firefox: 29%
  • Safari: 13%
  • IE: 11%
  • Safari (in-app): 3%
  • Opera: 3%
  • Android Browser: 2%
I would have expected Safari to make a bigger showing thanks to iOS. The good news is that "evergreen" (continually updated) browsers are 70% of the audience.

  • Desktop: 79%
  • Tablet: 13%
  • Mobile: 8%
... and of non-desktop:
  • iPad: 49%
  • iPhone: 17%
  • ????: 5%
  • Nexus 10: 3%
  • Nexus 5: 2%
  • Nexus 7: 2%
  • Windows RT: 2%
Tablet usage higher than "mobile" (i.e. phone) usage is quite unusual. And iPad completely dominating here is also unusual. I guess the numbers support the anecdotes I've heard from users about using iPads while gaming. I rarely bust out a tablet, but I'll need to start prioritizing work in that area - e.g. making it easier to report bugs and so on.