A lovely little bit of urban cartography.
Saturday, January 25th, 2020
Thursday, October 31st, 2019
Remember when I wrote about adding travel maps to my site at the recent Indie Web Camp Brighton? I must confess that the last line I wrote was an attempt to catch a fish from the river of the lazy web:
It’s a shame that I can’t use the lovely Stamen watercolour tiles for these static maps though.
In the spirit of Cunningham’s Law, I was hoping that somebody was going to respond with “It’s totally possible to use Stamen’s watercolour tiles for static maps, dumbass—look!” (to which my response would have been “thank you very much!”).
Alas, no such response was forthcoming. The hoped-for schooling never forthcame.
Still, I couldn’t quite let go of the idea of using those lovely watercolour maps somewhere on my site. But I had decided that dynamic maps would have been overkill for my archive pages:
Sure, it looked good, but displaying the map required requests for a script, a style sheet, and multiple map tiles.
Then I had a thought. What if I keep the static maps on my archive pages, but make them clickable? Then, on the other end of that link, I can have the dynamic version. In other words, what if I had a separate URL just for the dynamic maps?
These seemed like a good plan to me, so while I was travelling by Eurostar—the only way to travel—back from the lovely city of Antwerp where I had been speaking at Full Stack Europe, I started hacking away on making the dynamic maps even more dynamic. After all, now that they were going to have their own pages, I could go all out with any fancy features I wanted.
I kept coming back to my original goal:
I was looking for something more like the maps in Indiana Jones films—a line drawn from place to place to show the movement over time.
I found a plug-in for Leaflet.js that animates polylines—thanks, Iván! With a bit of wrangling, I was able to get it to animate between the lat/lon points of whichever archive section the map was in. Rather than have it play out automatically, I also added a control so that you can start and stop the animation. While I was at it, I decided to make that “play/pause” button do something else too. Ahem.
If you’d like to see the maps in action, click the “play” button on any of these maps:
- Everything from this August.
- Links from June 2017.
- Photos from October 2014.
- The entirety of 2018—that might take a while.
You get the idea. It’s all very silly really. It’s right up there with the time I made my sparklines playable. But that’s kind of the point. It’s my website so I can do whatever I want with it, no matter how silly.
First of all, the research department for adactio.com (that’s me) came up with the idea. Then that had to be sold in to upper management (that’s me too). A team was spun up to handle design and development (consisting of me and me). Finally, the finished result went live thanks to the tireless efforts of the adactio.com ops group (that would be me). Any feedback should be directed at the marketing department (no idea who that is).
Monday, October 21st, 2019
It was Indie Web Camp Brighton on the weekend. After a day of thought-provoking discussions, I thoroughly enjoyed spending the second day tinkering on my website.
For a while now, I’ve wanted to add maps to my monthly archive pages (to accompany the calendar heatmaps I added at a previous Indie Web Camp). Whenever I post anything to my site—a blog post, a note, a link—it’s timestamped and geotagged. I thought it would be fun to expose that in a glanceable way. A map seems like the right medium for that, but I wanted to avoid the obvious route of dropping a load of pins on a map. Instead I was looking for something more like the maps in Indiana Jones films—a line drawn from place to place to show the movement over time.
After two hours, I admitted defeat.
I was able to find the kind of static maps I wanted from Mapbox—I’m already using them for my check-ins. I could even add a polyline, which is exactly what I wanted. But instead of passing latitude and longitude co-ordinates for the points on the polyline, the docs explain that I needed to provide …cur ominous thunder and lightning… The Encoded Polyline Algorithm Format.
Go to that link. I’ll wait.
Did you read through the eleven steps of instructions? Did you also think it was a piss take?
- Take the initial signed value.
- Multiply it by 1e5.
- Convert that decimal value to binary.
- Left-shift the binary value one bit.
- If the original decimal value is negative, invert this encoding.
- Break the binary value out into 5-bit chunks.
- Place the 5-bit chunks into reverse order.
- OR each value with 0x20 if another bit chunk follows.
- Convert each value to decimal.
- Add 63 to each value.
- Convert each value to its ASCII equivalent.
This was way beyond my brain’s pay grade. But surely someone else had written the code I needed? I did some Duck Duck Going and found a piece of PHP code to do the encoding. It didn’t work. I Ducked Ducked and Went some more. I found a different piece of PHP code. That didn’t work either.
At this point, my allotted time was up. If I wanted to have something to demo by the end of the day, I needed to switch gears. So I did.
It waits until the page has finished loading, then it searches for any instances of the
h-geo microformat (a way of encoding latitude and longitude coordinates in HTML). If there are three or more, it generates a
script element to pull in the Leaflet library, and a corresponding
style element. Then it draws the map with the polyline on it. I ended up using Stamen’s beautiful watercolour map tiles.
That’s what I demoed at the end of the day.
But I wasn’t happy with it.
Sure, it looked good, but displaying the map required requests for a script, a style sheet, and multiple map tiles. I made sure that it didn’t hold up the loading of the rest of the page, but it still felt wasteful.
So after Indie Web Camp, I went back to investigate static maps again. This time I did finally manage to find some PHP code for encoding lat/lon coordinates into a polyline that worked. Finally I was able to construct URLs for a static map image that displays a line connecting multiple points with a line.
I’ve put this maps on any of the archive pages that also have calendar heat maps. Some examples:
- Everything from August 2019
- Notes from July 2018
- Links from June 2017
- Photos from October 2014
- Journal entries from December 2012
If you go back much further than that, the maps start to trail off. That’s because I wasn’t geotagging everything from the start.
I’m pretty happy with the final results. It’s certainly far more responsible from a performance point of view. Oh, and I’ve also got the maps inside a
picture element so that I can swap out the tiles if you switch to dark mode.
It’s a shame that I can’t use the lovely Stamen watercolour tiles for these static maps though.
Sunday, July 21st, 2019
A look at all the factors that went into choosing the Apollo landing sites, including this gem:
Famous amateur astronomer, Sir Patrick Moore, also produced a hand drawn map of the moon from his own observations using his homemade telescope at his home in Selsey, Sussex. These detailed pen and ink maps of the Moon’s surface were used by NASA as part of their preparations for the moon landing.
Monday, July 1st, 2019
The Decolonial Atlas is a growing collection of maps which, in some way, help us to challenge our relationships with the land, people, and state. It’s based on the premise that cartography is not as objective as we’re made to believe.
For example: Names and Locations of the Top 100 People Killing the Planet — a cartogram showing the location of decision makers in the top 100 climate-hostile companies.
This map is a response to the pervasive myth that we can stop climate change if we just modify our personal behavior and buy more green products. Whether or not we separate our recycling, these corporations will go on trashing the planet unless we stop them.
Sunday, June 30th, 2019
Lighthouses of the world, mapped.
Monday, June 17th, 2019
How cartography made early modern global trade possible.
Maps and legends. Beautiful!
Monday, April 8th, 2019
Saturday, March 30th, 2019
These diagrams of early networks feel like manuscripts that you’d half expect to be marked with “Here be dragons” at the edges.
Sunday, January 27th, 2019
A list of alternatives to Google’s products.
Sunday, December 2nd, 2018
Monday, September 24th, 2018
Procedurally generated medieval town plans. Pick a size and then have some fun with the “warp” option.
Thursday, September 13th, 2018
The map we need if we want to think about how global living conditions are changing - Our World in Data
While a geographical map is helpful if you want to find your way around the world, a population cartogram is the representation that we need if we want to know where our fellow humans are at home.
Thursday, May 31st, 2018
This ever-growing curated collection of interface patterns on CodePen is a reliable source of inspiration.
Wednesday, January 24th, 2018
This is a fascinating way to explore time and place—a spyglass view of hundred year old maps overlaid on the digital maps of today.
Wednesday, January 3rd, 2018
Wednesday, December 20th, 2017
A fascinating bit of cartographic reverse engineering, looking at how Google has an incredible level of satellite-delivered building detail that then goes into solving the design problem of marking “commercial corridors” (or Areas Of Interest) on their maps.
Saturday, December 2nd, 2017
Thursday, August 24th, 2017
I quite like this proposal for
geo element in HTML, especially that it has a fallback built in (like
video). I’m guessing the next step is to file an issue and create a web component to demonstrate how this could work.
That brings up another question: what do you name a custom element that you’d like to eventually become part of the spec? You can’t simply name it
geo because you have to include a hyphen.
Tuesday, May 30th, 2017
Checking in at Indie Web Camp Nuremberg
Just as with Indie Web Camp Düsseldorf the weekend before, it was a fun two days—one day of discussions, followed by one day of making.
I spent most of the second day playing around with a new service that Aaron created called OwnYourSwarm. It’s very similar to his other service, OwnYourGram. Whereas OwnYourGram is all about posting pictures from Instagram to your own site, OwnYourSwarm is all about posting Swarm check-ins to your own site.
Usually I prefer to publish on my own site and then push copies out to other services like Twitter, Flickr, etc. (POSSE—Publish on Own Site, Syndicate Elsewhere). In the case of Instagram, that’s impossible because of their ludicrously restrictive API, so I have go the other way around (PESOS—Publish Elsewhere, Syndicate to Own Site). When it comes to check-ins, I could do it from my own site, but I’d have to create my own databases of places to check into. I don’t fancy that much (yet) so I’m using OwnYourSwarm to PESOS check-ins.
The great thing about OwnYourSwarm is that I didn’t have to do anything. I already had the building blocks in place.
First of all, I needed some way to authenticate as my website. IndieAuth takes care of all that. All I needed was
rel="me" attributes pointing from my website to my profiles on Twitter, Flickr, Github, or any other services that provide OAuth. Then I can piggyback on their authentication flow (this is also how you sign in to the Indie Web wiki).
The other step is more involved. My site needs to provide an API endpoint so that services like OwnYourGram and OwnYourSwarm can post to it. That’s where micropub comes in. You can see the code for my minimal micropub endpoint if you like. If you want to test your own micropub endpoint, check out micropub.rocks—the companion to webmention.rocks.
Anyway, I already had IndieAuth and micropub set up on my site, so all I had to do was log in to OwnYourSwarm and I immediately started to get check-ins posted to my own site. They show up the same as any other note, so I decided to spend my time at Indie Web Camp Nuremberg making them look a bit different. I used Mapbox’s static map API to show an image of the location of the check-in. What’s really nice is that if I post a photo on Swarm, that gets posted to my own site too. I had fun playing around with the display of photo+map on my home page stream. I’ve made a page for keeping track of check-ins too.
All in all, a fun way to spend Indie Web Camp Nuremberg. But when it came time to demo, the one that really impressed me was Amber’s. She worked flat out on her site, getting to the second level on IndieWebify.me …including sending a webmention to my site!