Flow maps show branches of data which form part of a whole and are often used to show derivative products made from a single source. These were quite popular in the early 20th Century to show shipping traffic from ports. In this example it shows the components that contribute to the 3M stock price. Post-its and office produces …
Category Archives: Maps and Cartograms
Chart of the Week: Timeline+Segmentation+ Scatterplot
Information-dense charts show multiple relationships in data in a single, chart. They take more time to read/review, but provide deeper insights. This week’s example from R.W Brunskill’Illustrated Handbook of Vernacular Architecture shows the evolution of “vernacular architecture”. Vernacular architecture ” will have been designed by an amateur, probably of the occupier of the intended building and one …
Area Proportional Venn Diagrams
Venn diagrams are great for understanding how sets intersect and relate to each other, but most don’t indicate quantity. So if you have a set that shows pet ownership (some own dogs, some dogs and fish,etc): With a proportional Venn diagram, you add the dimension of size or count. For example, People who own a dog+cats (ab) would …
Chart of the Week: Bucket vs. Pail
What’s the difference between a pail and a bucket? According to this chart in Word Geography of the Eastern States (Kurath, 1941), most of the New England and New York use “pail” (triangle) , while Pennsylvania and the lower mid-Atlantic states use “bucket”. Data context: Kurath had local research teams who focused on cities and towns which had been …
Cartogram of the US Election
Cartogram of the US election in 2004. The size of each box is proportional to electoral votes, color is the candidate, and layout/shape is roughly the same as geographic placement. From this it’s possble to see the West, Northeast and Northern Midwest …