{"id":164,"date":"2021-07-15T09:43:53","date_gmt":"2021-07-15T14:43:53","guid":{"rendered":"https:\/\/sites.owu.edu\/geog-112\/?page_id=164"},"modified":"2022-07-19T16:40:36","modified_gmt":"2022-07-19T21:40:36","slug":"lab-7-data-classification-and-mapping","status":"publish","type":"page","link":"https:\/\/sites.owu.edu\/geog-112\/schedule-content\/lab-7-data-classification-and-mapping\/","title":{"rendered":"Lab 7: Data Classification and Mapping"},"content":{"rendered":"<blockquote style=\"border: 0px solid #666;padding: 10px;background-color: #f2f2f2\"><p>Update 7\/19\/2021<\/p><\/blockquote>\n<p><strong>100 points<br \/>\n<\/strong>Assign: Monday, October 17<span style=\"font-size: 1rem\"><br \/>\n<\/span><span style=\"font-size: 1rem\">Due: Wednesday, November 7<\/span><\/p>\n<blockquote style=\"border: 0px solid #666;padding: 10px;background-color: #f2f2f2\"><p><strong>Classifying and Mapping Your Data<\/strong><\/p><\/blockquote>\n<p>It might seem a bit odd that halfway through the semester, we are just getting to actual maps of your data. That&#8217;s about right: half the time for a mapping project is typically spent getting the data ready to map. Huh!<\/p>\n<p>You have cleaned up your historical Census data and brought it into ArcGIS, where you have linked it to a base map of your state (or states). You also spent a crapload of time futzing with the formatting of the data to allow it to be <strong>animated<\/strong>. In essence: using a map that changes over time to show data that changes over time.<\/p>\n<p>You will map your historical population data as<\/p>\n<ul>\n<li>a\u00a0<strong>choropleth<\/strong> (graduated color) map<\/li>\n<li>a <strong>graduated symbol<\/strong> map<\/li>\n<li>a <strong>dot density<\/strong> map<\/li>\n<\/ul>\n<p><em>Making Maps<\/em> (pp. 218-219) brilliantly explains the differences between these different ways of mapping the same data:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-814\" src=\"https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/Screen-Shot-2022-07-19-at-10.28.04-AM.png\" alt=\"\" width=\"2128\" height=\"1476\" srcset=\"https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/Screen-Shot-2022-07-19-at-10.28.04-AM.png 2128w, https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/Screen-Shot-2022-07-19-at-10.28.04-AM-300x208.png 300w, https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/Screen-Shot-2022-07-19-at-10.28.04-AM-1024x710.png 1024w, https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/Screen-Shot-2022-07-19-at-10.28.04-AM-768x533.png 768w, https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/Screen-Shot-2022-07-19-at-10.28.04-AM-1536x1065.png 1536w, https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/Screen-Shot-2022-07-19-at-10.28.04-AM-2048x1421.png 2048w\" sizes=\"auto, (max-width: 2128px) 100vw, 2128px\" \/><\/p>\n<p>You will have to make data classification and symbolization decisions for these maps:<\/p>\n<ul>\n<li>a\u00a0<strong>choropleth<\/strong> (graduated color) map\n<ul>\n<li>have to classify data: <em>Making Maps,<\/em> pp. 173-181<\/li>\n<li>symbolization issues: <em>Making Maps,<\/em> pp. 220-221)<\/li>\n<\/ul>\n<\/li>\n<li>a <strong>graduated symbol<\/strong> map\n<ul>\n<li>have to classify data: <em>Making Maps,<\/em> pp. 173-181<\/li>\n<li>symbolization issues: <em>Making Maps,<\/em> pp. 2220-223<\/li>\n<\/ul>\n<\/li>\n<li>a <strong>dot density<\/strong> map\n<ul>\n<li>don&#8217;t have to classify data<\/li>\n<li>symbolization issues: <em>Making Maps,<\/em> pp. 226-227<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Ultimately you need to think about how the map type, classification, and symbolization decisions affect the understanding of the data being mapped. Same data, different map design choices, different looking maps, different interpretations? I&#8217;ll have you reflect on this once you complete the maps.<\/p>\n<blockquote style=\"border: 0px solid #666;padding: 10px;background-color: #f2f2f2\"><p><strong>The Details<\/strong><\/p><\/blockquote>\n<p>This lab requires you to have completed Lab 5, and have an ArcGIS Pro Project for your state with all steps in Lab 5 completed. Please make sure your instructor has reviewed your work for Lab 5.<\/p>\n<p>I&#8217;m also going to get a bit less specific in my instructions, as you should be getting a better feel for how ArcGIS Pro works. It&#8217;s also good for you to have to figure out how to figure out how to do things with ArcGIS Pro. Give it the Old College Try.<\/p>\n<p>Start by <strong>duplicating<\/strong> the layer you created in Lab 5: mine is called <strong>Wisconsin_Counties<\/strong><\/p>\n<p><strong>Copy<\/strong> and <strong>Paste<\/strong> three layers and rename them thus (substitute your state name)<\/p>\n<ul>\n<li>Wisconsin_Choropleth<\/li>\n<li>Wisconsin_GraduatedSymbol<\/li>\n<li>Wisconsin_DotDensity<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-821 aligncenter\" src=\"https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/01-threecopies.png\" alt=\"\" width=\"200\" height=\"160\" srcset=\"https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/01-threecopies.png 551w, https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/01-threecopies-300x241.png 300w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/p>\n<p>Uncheck the original <strong>Wisconsin_Counties<\/strong> (it&#8217;s a backup layer)<\/p>\n<p><strong>Wisconsin_Choropleth<\/strong> is already set up as a choropleth (graduated color) map. <strong>Uncheck<\/strong> the layer to make it invisible and hide the legend.<\/p>\n<p><strong>Check<\/strong> <strong>Wisconsin_GraduatedSymbol<\/strong> and right-click on the layer and select <strong>Symbology<\/strong><\/p>\n<ul>\n<li>change the primary symbology to <strong>graduated symbols<\/strong><\/li>\n<li>way up top, under <strong>Map<\/strong> and <strong>Time<\/strong> click the <strong>Play all Steps<\/strong> (Play) button to animate<\/li>\n<li>futz with the symbols a bit: change the <strong>minimum size<\/strong> to 8pt. and <strong>max<\/strong>. to 50pts\n<ul>\n<li>play the animation again: more dramatic!<\/li>\n<\/ul>\n<\/li>\n<li>click on the circle symbol next to <strong>Template<\/strong> and change the circle to some other symbol\n<ul>\n<li>also change the <strong>background<\/strong><\/li>\n<\/ul>\n<\/li>\n<li>notice that you have to add a &#8220;No Data&#8221; class (remember? Lab 5?)<\/li>\n<li><strong>Save<\/strong><\/li>\n<li>You&#8217;ll come back and carefully modify the classification and other symbolization options for this map type later. But you get how to make the changes.<\/li>\n<\/ul>\n<p>Uncheck <strong>Wisconsin_GraduatedSymbol <\/strong>and<strong> hide <\/strong>its legend in the Contents<\/p>\n<p>Check <strong>Wisconsin_DotDensity<\/strong> and <strong>show<\/strong> its legend in the Contents.<\/p>\n<ul>\n<li>change the primary symbology to<strong> dot density<\/strong><\/li>\n<li>way up top, under <strong>Map<\/strong> and <strong>Time<\/strong> click the <strong>Play all Steps<\/strong> (Play) button to animate<\/li>\n<li>futz with the symbols a bit: click on the single <strong>dot<\/strong> symbol (under <strong>Symbol<\/strong>, in the table under the color bar) then <strong>Properties<\/strong> and change <strong>Color<\/strong> to something else; then <strong>Apply<\/strong>\n<ul>\n<li>change the <strong>Dot Size<\/strong> to 3pt<\/li>\n<li>play the animation again<\/li>\n<\/ul>\n<\/li>\n<li>change the <strong>background <\/strong>to some other color and <strong>Apply<\/strong><\/li>\n<li>On the &#8220;no data&#8221; counties (if you have any): for this map type, the counties with no data will have no dots, which is ok. There is a way to exclude these counties if you want to try and find it.<\/li>\n<li><strong>Save<\/strong><\/li>\n<li>You&#8217;ll come back and carefully modify the classification and other symbolization options for this map type later. But you get how to make the changes.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-822 aligncenter\" src=\"https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/02-threecopies.png\" alt=\"\" width=\"236\" height=\"326\" srcset=\"https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/02-threecopies.png 547w, https:\/\/sites.owu.edu\/geog-112\/wp-content\/uploads\/sites\/186\/2022\/07\/02-threecopies-217x300.png 217w\" sizes=\"auto, (max-width: 236px) 100vw, 236px\" \/><\/p>\n<blockquote style=\"border: 0px solid #666;padding: 10px;background-color: #f2f2f2\"><p><strong>Make Your Maps using Making Maps as a Guide<\/strong><\/p><\/blockquote>\n<p>You can now review the pages below in Making Maps (we&#8217;ll also go over them in class) and make symbolization decisions about your maps. <span style=\"color: #ff0000\">For your lab log, list specific guidelines from Making Maps for each of the map types (see below), list your design choice, and why you made it.<\/span> Obviously, make the changes in your ArcGIS Pro project.<\/p>\n<ul>\n<li>a\u00a0<strong>choropleth<\/strong> (graduated color) map\n<ul>\n<li>data classification choices: <em>Making Maps,<\/em> pp. 173-181<\/li>\n<li>symbolization choices: <em>Making Maps,<\/em> pp. 220-221)<\/li>\n<\/ul>\n<\/li>\n<li>a <strong>graduated symbol<\/strong> map\n<ul>\n<li>data classification choices:<em>Making Maps,<\/em> pp. 173-181<\/li>\n<li>symbolization choices: <em>Making Maps,<\/em> pp. 2220-223<\/li>\n<\/ul>\n<\/li>\n<li>a <strong>dot density<\/strong> map\n<ul>\n<li>don&#8217;t have to classify data<\/li>\n<li>symbolization choices: <em>Making Maps,<\/em> pp. 226-227<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Your instructor is happy to provide feedback along the way.<\/p>\n<blockquote style=\"border: 0px solid #666;padding: 10px;background-color: #f2f2f2\"><p><strong>Completing the Lab<\/strong><\/p><\/blockquote>\n<p>Email me the link to your blog entry for Lab 7. The blog entry should include the following, illustrated with delightful Snipping Tool illustrations from your Project.<\/p>\n<ul>\n<li>a\u00a0<strong>choropleth<\/strong> (graduated color) map\n<ul>\n<li><span style=\"color: #ff0000\">data classification choices:<\/span> <em>Making Maps,<\/em> pp. 173-181<\/li>\n<li><span style=\"color: #ff0000\">symbolization choices:<\/span> <em>Making Maps,<\/em> pp. 220-221)<\/li>\n<\/ul>\n<\/li>\n<li>a <strong>graduated symbol<\/strong> map\n<ul>\n<li><span style=\"color: #ff0000\">data classification choices<\/span>:\u00a0<em>Making Maps,<\/em> pp. 173-181<\/li>\n<li><span style=\"color: #ff0000\">symbolization choices:<\/span> <em>Making Maps,<\/em> pp. 2220-223<\/li>\n<\/ul>\n<\/li>\n<li>a <strong>dot density<\/strong> map\n<ul>\n<li>don&#8217;t have to classify data<\/li>\n<li><span style=\"color: #ff0000\">symbolization choices:<\/span> <em>Making Maps,<\/em> pp. 226-227<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Finally: revisit your three maps (choropleth, symbol, dot) and think about the question at the start of this lab: Think about how the map type, classification, and symbolization decisions affect the understanding of the data being mapped. Same data, different map design choices, different looking maps, different interpretations? <span style=\"color: #ff0000\">Jot down a few thoughts in your lab log.<\/span> I&#8217;ll ask you the question again in the final evaluation (Lab 10).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Update 7\/19\/2021 100 points Assign: Monday, October 17 Due: Wednesday, November 7 Classifying and Mapping Your Data It might seem a bit odd that halfway through the semester, we are just getting to actual maps of your data. That&#8217;s about <span class=\"readmore\"><a href=\"https:\/\/sites.owu.edu\/geog-112\/schedule-content\/lab-7-data-classification-and-mapping\/\">Continue Reading<\/a><\/span><\/p>\n","protected":false},"author":138,"featured_media":0,"parent":52,"menu_order":9,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-164","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/pages\/164","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/users\/138"}],"replies":[{"embeddable":true,"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/comments?post=164"}],"version-history":[{"count":32,"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/pages\/164\/revisions"}],"predecessor-version":[{"id":827,"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/pages\/164\/revisions\/827"}],"up":[{"embeddable":true,"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/pages\/52"}],"wp:attachment":[{"href":"https:\/\/sites.owu.edu\/geog-112\/wp-json\/wp\/v2\/media?parent=164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}