Hi @Shaul, Incoming Novel!!
We have 226,315 polygons in this campaign. I hope nobody will feel too overwhelmed by that. On our last campaign, for example, we had over 3000 unique voters. So really, each voter technically only needs to vote on 75 polygons to get 1x coverage of the whole area! (we will get more coverage than that, especially on low-confidence tiles, but, this is just as an example of the light work - many hands).
Here’s what’s going on with the size of the polygons: this has to do with the trade-offs of choosing a map projection and the difficulty of projecting the latitude we are working in. As you change latitude, going further north or south, the tile is same area physically (“on the ground area”) but has to get taller in terms of pixels to be exactly the same size. This is the same reason why, when you look at a typical map of the world online, Antarctica, Greenland, etc will appear much larger compared to the more equatorial countries. We use a web mercator map projection in Tomnod (the usual projection for web-based map work), but virtually all projections will have issues like this at extreme latitudes like we are working in here. It’s the long-standing issue of taking a round world and trying to make it look flat on a map or computer screen. This is compounded by user screen size - Tomnod is trying to show you as much of the polygon as possible, so when there are small changes in a polygon size, it will exaggerate this to some extent to try to get more image to you.
The reason this wasn’t as big of an issue in our previous campaigns was that we were only working in one area of Antarctica each campaign, so the tiles appeared to be uniform. In this campaign we are cleaning up a few different habitats across Antarctica, so the differences between the tiles are quite noticeable and Tomnod is compensating for this.
Sorry to stick you with something annoying on our last campaign!