{"id":236,"date":"2019-01-03T19:44:39","date_gmt":"2019-01-04T03:44:39","guid":{"rendered":"https:\/\/blogs.ubc.ca\/dminney\/?p=236"},"modified":"2019-01-03T19:53:56","modified_gmt":"2019-01-04T03:53:56","slug":"proportional-symbol-maps","status":"publish","type":"post","link":"https:\/\/blogs.ubc.ca\/dminney\/2019\/01\/03\/proportional-symbol-maps\/","title":{"rendered":"Proportional Symbol Maps"},"content":{"rendered":"\n

Using Absolute Scaling<\/h3>\n\n\n\n
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U<\/strong><\/figcaption><\/figure>\n\n\n\n

Using Perceptual Scaling<\/h3>\n\n\n\n
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Summary
<\/h3>\n\n\n\n

Absolute scaling for proportional\nsymbol maps allows for an accurate representation of the area difference\nbetween cities. However, when viewed on a map, humans commonly underestimate area\ndifferences for symbols when using absolute scaling. In the map of Indian\ncities with a population greater than 2 million, the absolute scaling, although\nscaled to true values, makes it look like the middle-sized cities are a lot\ncloser in population size to the largest cities such as Delhi, Mumbai, and\nKolkata. This problem is largely fixed when using the Flannery method of\nscaling with an exponent of 0.57 instead of 0.5. The larger cities seem\nproportionally larger compared to the smaller cities and gives a much better\nsense of how many people live there. <\/p>\n","protected":false},"excerpt":{"rendered":"

Using Absolute Scaling Using Perceptual Scaling Summary Absolute scaling for proportional symbol maps allows for an accurate representation of the area difference between cities. However, when viewed on a map, humans commonly underestimate area differences for symbols when using absolute scaling. In the map of Indian cities with a population greater than 2 million, the absolute scaling, although scaled to true values, makes it look like the middle-sized cities are a lot closer in population size to the largest cities such as Delhi, Mumbai, and Kolkata. This problem is largely…read more<\/a><\/p>\n","protected":false},"author":44054,"featured_media":249,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1416540],"tags":[],"class_list":["post-236","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cartography","et-bg-layout-dark","et-white-bg"],"_links":{"self":[{"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/posts\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/users\/44054"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/comments?post=236"}],"version-history":[{"count":5,"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/posts\/236\/revisions"}],"predecessor-version":[{"id":247,"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/posts\/236\/revisions\/247"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/media\/249"}],"wp:attachment":[{"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/media?parent=236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/categories?post=236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.ubc.ca\/dminney\/wp-json\/wp\/v2\/tags?post=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}