Friday, November 19, 2021

Thirty Day Map Challenge - Part 2

Here are the next batch of maps I've posted for the #30DayMapChallenge. The first ten maps are here.

Day 11 - Theme: 3D

For the 3D theme I attempted to recreate an exercise from my first cartography class back in the 1980's. That exercise was done using a pencil and graph paper. Unfortunately, I do not have my notes or remember the exact procedure. I did this one using GIS software instead. The map shows murder rates by state. Back then North Carolina was #1, now it's Louisiana. The map is "upside down" so that the higher southern states don't block the view of the lower northern states.

Day 12 - Theme: Population

This is a map of Arctic settlements done "firefly" style, which is fashionable these days in cartography circles.

Day 13 - Theme: Data Challenge 2: Natural Earth

Natural Earth is a set of publicly available data. It is a collaboration involving many volunteer NACIS members and cartographers around the globe. Nathaniel Vaughn Kelso and Tom Patterson led the effort. They have produced some beautiful topographic images of the world. The map was also inspired by a NACIS talk on indigenous place names. The topography and streams are from Natural Earth, while the place names came from Canada's Open Data site.

Day 14 - Theme: Map with a new tool

This one is a bit of a mess because I started doing a tutorial using R, a new tool for me, but I ran into some technical difficulties and then ran out of time. I never expected that Sunday, a non-work day might be the day that I run out of time. I had seem some recent Excel maps and made a blog post about this one. At the last minute decided to try one. Last Spring I tried my hand at a cross stitch map of Rochester, New York. This seemed like a natural fit for an Excel map since it is very grid-like. Instead of doing land use though, I tried doing one of those HOLC redlining maps from the 1920's. 

Lack of time forced me to go very low res. so the map ends up looking like not much at all.

Day 15 - Theme: Map made without using a computer. 

Several of the previous maps were hand drawn but I decided on a different approach here. This is a souvenir Pennsylvania cutting board stacked with coins representing the GDP of the metropolitan areas of the state. One cent = $1 Million. It's a nice, even formula but does not make the stacks high enough to really show the pattern well. Since it is helpful to see multiple angles, I created this mediocre video.

Day 16 - Theme: Urban/rural

This was mostly just an exercise in image manipulation to tease out the urban and rural areas by land cover. I picked Charlotte after looking for cities that might have an interesting looking pattern.

Day 17 - Theme: Land

While waiting in the San Diego Airport a few years ago, I noticed a display of Kumeyaay culture. I was unaware of these people as I suspect many are. There were a couple of maps which I later found copies of on a website dedicated to Kumeyaay culture. I find it interesting that their territory predates the US-Mexico border which has been imposed on their land. This is what the area looked like pre-border.

Day 18 - Theme: Water

This was just a fun exercise in grabbing some water data from northern Quebec and overlaying it on top of a cheesy tree pattern that I made just for this purpose. More art than map. The large lake in the west is Lac Couture, an impact crater.

Day 19 - Theme: Islands

I've always been fond of Christo and Jeanne-Claude's Surrounded Islands installation so I decided to map it. Buffering is one of the most common and basic GIS functions (ie. is this property within 200 feet of the river?), here was an example of a real world buffer.

More to come (I hope).

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