Types of Maps Types of Thematic Maps
Types of Maps Klamath NF NF Rivers NF 101 S ha s 299 General Reference Lava Beds NM Klamath Six Redwood NP t a -T ri n i ty Lassen Volcanic NP Whiskeytown 5 NRA General Reference Maps use symbols to show Lassen NF example, where the red line is drawn for the NF NF 99 roads is where you can actually find the road example of a general reference map. Toiyabe NF l Sequoia NP Inyo 395 NF Sequoia NF 1Padres 101 99 Valley Basin and Range NP 58 L os Southern Coast Range Death da 5 Los y Kings Canyon NP lle NF Va Inyo NF Sierra Pinnacles NM va tra Yosemite Inyo NP NF is an example of a thematic map. Ne Cen NF t Stanislaus The map of California’s physiographic regions, below, rra El Dorado NF Muir Woods NM only general information about the theme or pattern. Sie 50 not in an exact location because the maps provide in real life. The map of California, below, is an 80 “theme.” Usually, the symbols used on these maps are Northern Coast Range Grea Tahoe NF 20 1 Thematic Maps use symbols to show a pattern or Cascade Range the exact location of things on the Earth. For Mendocino NF Modoc Plateau 395 Plumas Point Reyes NS Thematic Klamath Mountains Modoc NF Pa dr es Mojave 15 NF A ng el National Preserve es Transve rse 40 NF S an Channel Islands NP Be r nar di n o Joshua Tree NP Mojave Desert R an ges Peninsular Ranges 10 ClevelandNF Colorado Desert Cabrillo NM. 8 Choropleth Population of Kids 5-17 Years Old Isopleth Many Kids 400,001 - 1,600,000 Types of Thematic Maps 300,001 - 400,000 150,001 - 300,000 50,001 - 150,000 15,001 - 50,000 200 - 15,000 Dot Density Population of Kids 5-17 Years Old One Dot equals 3,000 kids Few Kids • Each county is shaded a color to show total number of kids • This map shows a continuous distribution of kids • The symbol covers an entire county, but it does not mean that kids live everywhere inside the county • Because we do not know how many kids live in every single place in California, we take an average of two cities in an area to estimate the number of kids in that area 15,000 kids 30,000 kids 60,000 kids 600,000 kids Color Patch Graduated Circle Population of Kids 5-17 Years Old 400,001 - 1,600,000 300,001 - 400,000 City Kids Country Kids 150,001 - 300,000 50,001 - 150,000 • One dot equals a certain number of kids • If dots are close together, lots of kids live in one area 15,001 - 50,000 200 - 15,000 • If dots are spread out, not very many kids live in one area • One circle represents how many kids live in that county • The size of the circle is proportional to the number of kids that live in a county - the more kids that live in a county, the larger the circle 10 California Geographic Alliance ©2010 • This map draws boundaries around different groups of people (for example, City Kids and Country Kids) • The map does not show how many kids are in each group, just where each group is located The sources and credits for this map are listed at http://humboldt.edu/cga/atlas-sources-credits. Note that this map is an 11x14 page, and not meant for 8.5x11 printing or use. Siskiyou NF Rogue River NF
© Copyright 2024