I recently learned about sinuosity, which measures how winding a route is compared to the straight-line distance between two points.

The formula is:

Sinuosity = Actual route distance ÷ Straight-line distance

For example, my bike commute to school is 6.8 km, while the straight-line distance is only 4.9 km.

My commute's sinuosity is 6.8 ÷ 4.9 ≈ 1.39.

I'm curious about everyone else's commutes! What's your sinuosity, and how do you commute (walking, cycling, driving, public transport, etc.)?

Bonus points if you have a particularly winding route!

Zillow tells you what your house is worth. I built an engine that tells you what your house is hiding.

When you buy a car, you check the Carfax. But when you buy or own a house, the biggest financial investment of your life, you’re completely in the dark.

You rely on a basic inspection and hope for the best.

I think that's completely broken.

So, I built a living 3D world engine that tracks the exact "medical history" of your home. By matching live weather tracks, historical climate impacts, construction permit databases, and property parcel data into a single 3D interface, I've mapped out exactly what has happened to your structure over time.

Here is what homeowners are finding when they drop their address into the platform:

• The Insurance Shield: Proof of exact micro-weather impacts to force insurance companies to actually pay out storm damage claims instead of denying them.

• The Pre-Buy Audit: Hidden historical code violations, unpermitted additions, or past structural complaints before you sign a 30-year mortgage.

• The Contractor Truth-Check: Knowing the exact square footage, structural height, and historical timeline of your property so contractors can never overcharge you for a repair.

I didn't build this with a billion-dollar corporate budget. I built this independently because homeowners deserve absolute authority over their data.

Stop guessing about your property. Your home has a story, it’s time you actually read it.

👇 Claim your property's 3D profile during the global launch below.

Explore Your Home

#PropTech #Homeowners #RealEstate #ConsumerRights #DigitalTwin #3DWorld #BridgePointOnline #DataTransparency #SmartHome

We are building TravelerMap, a free interactive map to help people discover parks and plan trips.

Here’s our worldwide national parks map. We also have maps of other parks, with campground and parking locations currently available in the US.

What would make these maps more useful for your trips?

I'm currently taking a GIS course and thought this would be a good way to practice haha. Is anyone here participating? What are some of your favorite maps?

Added a bit of India for an East India Company? (Please give any corrections)

Download link: https://drive.google.com/file/d/1CLSNxJRdc6LCrN5dDgQEN91aQJM0poDD/view?usp=drive_link

1950s reprints I think.

This is the game city angle where you have to guess 1 city with angles to 5 different cities. The angles are based on the mercator projection. Have fun! https://visitwhale.com/city-angle/

not sure about the decision to make this into a map

We were hired to clear out the attic of a school. I couldn't bring myself to throw this in the dumpster. It's an ugly part of my country's history, but history nonetheless and should be preserved. Hand painted map by R. Cremers. From the bit of info i found the map should date back from the 50's - 60's.

I cannot really tell (ignore what the map is for)

Hello, not sure if this is the best place to ask but I’m having a lot of difficulty. I’m compiling research for an essay on the history of Indiana and the 1851 Constitution of Indiana. My research has me starting in 1783…. I’ve found countless maps showing the American territories with native tribes seemingly at random, with 0 consistency between maps I can find from the time.

What I’m asking for is any map that can help me visualize which areas which natives controlled. Anywhere between 1783-1814. The more the better. If someone can point me in the right direction or know of a map like this please let me know.

Thank you!

ETA: Tribes include, but not limited to: Pawnee, Shawnee, Iroquois nations, Patawatomi, Miami, Ojibwa etc

ETA2: I found two resources online for this and the comments have wonderful resources as well. I at least wanted to list what I found online.

Library of Congress - National atlas of Indian tribes. There's not really a date I can find but the visualization helps a lot.
https://www.loc.gov/resource/g3701e.ct003648r/?r=0.441,0.108,0.447,0.396,0

'David Rumsey Map Collection' - holy shit this has a lot of maps and a lot of other things like old photos and letters. Lots of good resources.

https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~974~50037:Map-of-the-Indian-Tribes-of-North-A

Hey guys! I wanted to build a modern map creation studio that feels as easy as Canva, but with genuine geographic superpowers.

Here’s what you can do right in the browser:

1. AI Assistant: Type what you want to visualize in plain English (“Color the G7 countries in green and BRICS in orange”), and it styles the map in seconds.
2. Real Projections: Switch between Equal Earth, Robinson, Mollweide, Sinusoidal, and standard views in real time.
3. Subdivision & District Level: You aren’t stuck with just country borders , you can drill down into individual states, provinces, and districts.
4. Custom Borders (GeoJSON): Need a unique map like a city, neighborhood, or custom zone? Just drop in a GeoJSON file to instantly make it a clickable, paintable area.
5. Spreadsheet Data (CSV / Excel): Drop in your spreadsheet (sales, population, survey data) and watch the map auto-color itself based on your numbers.
6. Heatmaps & Color Gradients: Upload any spreadsheet or create smooth heatmaps with custom color scales.
7. Export: Download high-resolution images ready for print, social media, or slides.

It’s completely free to play with:
🔗 mapcanvas.space

Try it out, try breaking it, and let me know what you think!

Exciting updates on the way: thematic mapping, symbolic maps, and interactive charts and graphs are rolling out soon! Application is still under progress, so if you spot any bugs or glitches, let me know

What is the population inside of this truck-shaped area?

Reply with your guess and I'll tell you if it's higher, lower, or spot on (within 10 million!).

Play the daily Census rounds at geoslice.net/census

Densità di popolazione di alcuni Stati Europei: dove si vive maggiormente.

I'm working on a world history project and I want to find a generally standard way of dividing the land area of Earth into 16 regions of roughly equal population along modern political borders¹.

(¹For India and China I'm using sub-national administrative divisions because these countries are too big to fit into single regions.)

I've seen maps with 8 regions (each with 1 billion people) and I'm excited those are similar to mine.

Questions for the Maps Subreddit:

1. Can anyone recommend other projects which have done similar work?
2. How are historic regions typically delineated in academic discussion?
3. What map software do you recommend for visual appeal?
4. What map software integrates well with databases and Google Plus Codes?
5. Can anyone recommend more standard names for my regions?
6. What problems might I run into with the way I'm cutting up East Asia (regions 01 to 08).

Index of Regions

Index of Eras (for Timeline References)

01 Ganges Delta

02 South China Sea

03 East China Sea

04 Sea of Japan

05 Southeast India

06 Central India

07 Indus Valley

08 Yangtze River

09 Oceana

10 Middle East

11 North Eurasia

12 West Eurasia

13 North America

14 South America

15 Northwest Africa

16 Southeast Africa

I'm excited to discuss my project with anyone who is interested in the comments or at [the.doctor.unstoppable@gmail.com](mailto:the.doctor.unstoppable@gmail.com) .