Category Archives: Maps and Cartograms

Maps and cartograms

Featured Data Graphic: Visualizing City Data

Inter­est­ing mul­ti­vari­ate graphic shows mul­ti­ple city ast­trib­utes: sur­face area (cen­tral square), height of tallest build­ing, pop­u­la­tion, aver­age price of prop­erty, num­ber of vis­i­tors (4 right tri­an­gles) and mean tem­per­a­ture and rain­fall (charts). Each city is arranged by lat­i­tude (east to west) and lon­gi­tude (north– south) in a rough grid. Data is from pub­li­cally avail­able data […]

Featured Chart: Linguistic Geography of Bubbler vs. Water Fountain

This week’s chart is a visu­al­iza­tion of usage for “Water Foun­tain” vs. Drink­ing Foun­tainvs. “Bub­bler”. Water foun­tain pre­dom­i­nates in the south and north­east, while drink­ing foun­tain in the west. “Bub­ble” is regional in the upper Mid­west. The inter­ac­tive appli­ca­tion is avail­able from Joshua Katz a PhD can­di­date in sta­tis­tics at NC State. There are a […]

Using Flow Maps to show derivative products

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 […]

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 […]

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 […]

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 […]

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 …