{"id":2363,"date":"2020-11-30T21:49:45","date_gmt":"2020-12-01T05:49:45","guid":{"rendered":"https:\/\/www.lightsondata.com\/?post_type=tva_lesson&#038;p=2363"},"modified":"2020-12-18T15:23:46","modified_gmt":"2020-12-18T23:23:46","slug":"line-graph","status":"publish","type":"tva_lesson","link":"https:\/\/www.lightsondata.com\/course\/line-graph\/","title":{"rendered":"Line Graph"},"content":{"rendered":"<h2>Line Graph Examples<\/h2>\n<ul>\n<li>&#8220;<a href=\"https:\/\/public.tableau.com\/profile\/dreamsofdata#!\/vizhome\/SWDChallengeJan2018_DogBreeds\/Dashboard1\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">The Tales of Three Dogs<\/a>&#8221; data visualization by Alicia F. Bembenek<\/li>\n<\/ul>\n<p><span><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2638\" data-permalink=\"https:\/\/www.lightsondata.com\/alicia\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?fit=1000%2C800&amp;ssl=1\" data-orig-size=\"1000,800\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Alicia\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?fit=300%2C240&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?fit=1000%2C800&amp;ssl=1\" alt=\"\" data-id=\"2638\" width=\"749\" data-init-width=\"1000\" height=\"600\" data-init-height=\"800\" title=\"Alicia\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?resize=749%2C600&#038;ssl=1\" data-width=\"749\" data-height=\"600\" data-lazy-src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?ssl=1\"><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2638\" data-permalink=\"https:\/\/www.lightsondata.com\/alicia\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?fit=1000%2C800&amp;ssl=1\" data-orig-size=\"1000,800\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Alicia\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?fit=300%2C240&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?fit=1000%2C800&amp;ssl=1\" alt=\"\" data-id=\"2638\" width=\"749\" data-init-width=\"1000\" height=\"600\" data-init-height=\"800\" title=\"Alicia\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/Alicia.png?resize=749%2C600&#038;ssl=1\" data-width=\"749\" data-height=\"600\"><\/span><\/p>\n<ul>\n<li>&#8220;<a href=\"https:\/\/public.tableau.com\/profile\/surajshah212#!\/vizhome\/MakeoverMonday2018W41CANCERSURVIVALRATESINTHEUNITEDSTATESTake2\/Dashboard12\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" style=\"outline: none;\">Cancer Survival Rates in the United States<\/a>&#8221; dashboard by Suraj Shah<\/li>\n<\/ul>\n<p><span><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2637\" data-permalink=\"https:\/\/www.lightsondata.com\/cancer-rates\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?fit=462%2C1200&amp;ssl=1\" data-orig-size=\"462,1200\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"cancer rates\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?fit=116%2C300&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?fit=394%2C1024&amp;ssl=1\" alt=\"\" data-id=\"2637\" width=\"462\" data-init-width=\"462\" height=\"1200\" data-init-height=\"1200\" title=\"cancer rates\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?resize=462%2C1200&#038;ssl=1\" data-width=\"462\" data-height=\"1200\" data-lazy-src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?ssl=1\"><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2637\" data-permalink=\"https:\/\/www.lightsondata.com\/cancer-rates\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?fit=462%2C1200&amp;ssl=1\" data-orig-size=\"462,1200\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"cancer rates\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?fit=116%2C300&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?fit=394%2C1024&amp;ssl=1\" alt=\"\" data-id=\"2637\" width=\"462\" data-init-width=\"462\" height=\"1200\" data-init-height=\"1200\" title=\"cancer rates\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/cancer-rates.jpg?resize=462%2C1200&#038;ssl=1\" data-width=\"462\" data-height=\"1200\"><\/span><\/p>\n<h2>History of the Line Graph<\/h2>\n<p>The first chart appeared somewhere in the 10th or 11th century in the appendix of a manuscript called &#8220;The Course of the Zodiac. You can see time plotted against celestial latitude for different planets:<\/p>\n<p><span><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2639\" data-permalink=\"https:\/\/www.lightsondata.com\/course-of-the-zodiac\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?fit=818%2C463&amp;ssl=1\" data-orig-size=\"818,463\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"course of the zodiac\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?fit=300%2C170&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?fit=818%2C463&amp;ssl=1\" alt=\"\" data-id=\"2639\" width=\"749\" data-init-width=\"818\" height=\"424\" data-init-height=\"463\" title=\"course of the zodiac\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?resize=749%2C424&#038;ssl=1\" data-width=\"749\" data-height=\"424\" data-lazy-src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?ssl=1\"><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2639\" data-permalink=\"https:\/\/www.lightsondata.com\/course-of-the-zodiac\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?fit=818%2C463&amp;ssl=1\" data-orig-size=\"818,463\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"course of the zodiac\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?fit=300%2C170&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?fit=818%2C463&amp;ssl=1\" alt=\"\" data-id=\"2639\" width=\"749\" data-init-width=\"818\" height=\"424\" data-init-height=\"463\" title=\"course of the zodiac\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/course-of-the-zodiac.png?resize=749%2C424&#038;ssl=1\" data-width=\"749\" data-height=\"424\"><\/span><\/p>\n<p>Though how can we forget about the following line graph from the 18th century, from William Playfair? It compares the fluctuating numbers for stocks, revenue, expenditures, exports, the national debt, and the price of bread, clearly showing the effect of war on the British economy.&nbsp;<\/p>\n<p><span><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2640\" data-permalink=\"https:\/\/www.lightsondata.com\/british-economy\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?fit=2000%2C715&amp;ssl=1\" data-orig-size=\"2000,715\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"british economy\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?fit=300%2C107&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?fit=1024%2C366&amp;ssl=1\" alt=\"\" data-id=\"2640\" width=\"749\" data-init-width=\"2000\" height=\"267\" data-init-height=\"715\" title=\"british economy\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?resize=749%2C267&#038;ssl=1\" data-width=\"749\" data-height=\"267\" data-lazy-src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?ssl=1\"><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"2640\" data-permalink=\"https:\/\/www.lightsondata.com\/british-economy\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?fit=2000%2C715&amp;ssl=1\" data-orig-size=\"2000,715\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"british economy\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?fit=300%2C107&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?fit=1024%2C366&amp;ssl=1\" alt=\"\" data-id=\"2640\" width=\"749\" data-init-width=\"2000\" height=\"267\" data-init-height=\"715\" title=\"british economy\" loading=\"lazy\" src=\"https:\/\/i0.wp.com\/www.lightsondata.com\/wp-content\/uploads\/2020\/11\/british-economy.jpg?resize=749%2C267&#038;ssl=1\" data-width=\"749\" data-height=\"267\"><\/span><\/p>\n<h2>Types of Line Graphs<\/h2>\n<ul>\n<li>Sparkline<\/li>\n<li>Ridgeline<\/li>\n<\/ul>\n<h2>Visualization Best Practices<\/h2>\n<p><strong>Number of lines<\/strong><\/p>\n<ul>\n<li>Limit yourself to 5 or fewer lines<\/li>\n<li>If lines are well separated and identifiable you can plot more<\/li>\n<\/ul>\n<p><strong>Legend<\/strong><\/p>\n<ul>\n<li>Provide a legend if you are showing multiple data series<\/li>\n<li>The placement of the legend elements should follow the same order as the general height of the data series lines<\/li>\n<li>You can choose to labels the lines individually<\/li>\n<li>You might choose to match the color of the labels to the color of their corresponding lines<\/li>\n<\/ul>\n<p><strong>Axis<\/strong><\/p>\n<ul>\n<li>Since the main goal of the line chart is to emphasize changes in value, rather than the magnitude of the values themselves, the axis does not need to start at zero<\/li>\n<li>If the axis doesn&#8217;t start at zero, try to draw attention to that<\/li>\n<li>Don&#8217;t flip the axis of a chart&nbsp;<\/li>\n<li>Be consistent with the value of your axis<\/li>\n<\/ul>\n","protected":false},"template":"","class_list":["post-2363","tva_lesson","type-tva_lesson","status-publish","hentry","tva_courses-data-visualization-for-data-storytelling","post-wrapper","thrv_wrapper"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>LightsOnData<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lightsondata.com\/course\/line-graph\/\" 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