{"id":78741,"date":"2017-07-28T08:09:30","date_gmt":"2017-07-28T08:09:30","guid":{"rendered":"http:\/\/www.esri.com\/arcgis-blog\/products\/product\/uncategorized\/how-to-united-states-of-craigslist-chalkboard-style\/"},"modified":"2018-03-26T21:14:09","modified_gmt":"2018-03-26T21:14:09","slug":"how-to-united-states-of-craigslist-chalkboard-style","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/analytics\/analytics\/how-to-united-states-of-craigslist-chalkboard-style","title":{"rendered":"How-To: United States of Craigslist, Chalkboard Style!"},"author":6971,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[23341,23851,22941],"tags":[23201,26451,27971,32331,23391,27911],"industry":[],"product":[36561],"class_list":["post-78741","blog","type-blog","status-publish","format-standard","hentry","category-analytics","category-data-management","category-mapping","tag-cartographic-design","tag-cartography","tag-editing","tag-how-to","tag-spatial-analytics","tag-tutorial","product-arcgis-pro"],"acf":{"short_description":"Ah the trusty old, well-worn, United States of  Map. But at least I was a relatively early adopter (the\u00a0original versi...","flexible_content":[{"acf_fc_layout":"content","content":"<p>Ah the trusty old, well-worn, United States of [Thiessen Polygon] Map. But at least I was a relatively early adopter (the\u00a0<a href=\"http:\/\/uxblog.idvsolutions.com\/2011\/07\/chalkboard-maps-united-states-of.html\" target=\"_blank\">original version<\/a>\u00a0was made in\u2026yikes!\u20262011). Sure, this post will show you how to make these boundaries, but more interestingly, it will show you how to make a chalkboard-style map! Now pay attention or teacher will rap your knuckles with a ruler.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/UnitedStatesOfCraigslist.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84049 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/UnitedStatesOfCraigslist.jpg\" alt=\"\" width=\"3200\" height=\"2000\" \/><\/a><\/p>\n<p>There are only a couple key tricks to getting the chalkboard style rolling. The first is using a nice seamless chalkboard texture. The second is in hacking that stippled chalky line style. Here are some resources to get us going\u2026<\/p>\n<h2>Data &amp; Resources<\/h2>\n<ul>\n<li><a href=\"http:\/\/nation.maps.arcgis.com\/home\/item.html?id=79118b561a9b499a954daa68042f12af\" target=\"_blank\">The United States of Craigslist<\/a>\u00a0<em>(link to polygon shapefile download page)<\/em><br \/>\nYou are welcome! This represents lots of dissolving (for multi-location sites), and manual crafting (so orphaned\u00a0peninsulas actually get assigned to the most drive-able site). I\u2019ll show you how it was made, but in the meantime just cheat and download the results.<\/li>\n<li><a href=\"https:\/\/www.dropbox.com\/s\/b80qdpjptmctgmz\/UnitedStatesOfCraigslistChalkyAssets.zip?dl=0\" target=\"_blank\">Chalkboard Image Assets<\/a>\u00a0<em>(a zip with two PNG images)<\/em><br \/>\nThis is the green chalkboard texture used for the background. It\u2019s not easy making a texture image that repeats without obvious edge patterns. This will save you lots of time! Also included is the over-the-top-skeuomorphic image overlay with cute little pieces of chalk and dusty corners, etc. Just adorable.<\/li>\n<\/ul>\n<p>Ok, time to start dragging our fingernails down this map\u2026<\/p>\n<h2>How These States Got Their Shapes<\/h2>\n<p>If you\u2019ve ever read\u00a0<a href=\"https:\/\/www.amazon.com\/How-States-Got-Their-Shapes\/dp\/0061431397\" target=\"_blank\">this<\/a>\u00a0book, or watched\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/How_the_States_Got_Their_Shapes\" target=\"_blank\">this<\/a>\u00a0show, you are keenly aware that the United States were carved out in a surprisingly arbitrary, and sometimes accidental, fashion. Let\u2019s take a crack at generating some new states, based on pragmatic economic zones.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/StatesDetail.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84050 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/StatesDetail.jpg\" alt=\"\" width=\"1302\" height=\"468\" \/><\/a><\/p>\n<p>I went to Craigslist\u2019s\u00a0<em><a href=\"https:\/\/www.craigslist.org\/about\/sites\" target=\"_blank\">sites<\/a><\/em>\u00a0page, and copied all the sites for the United States, dropped them into an\u00a0Excel table\u00a0(splitting up all the multi-city sites) and geocoded them. While Craigslist\u00a0shows their own point-map of sites, we need to be more specific, since we\u2019re turning them into polygons.<\/p>\n<p>I added them to ArcGIS as XY events. I marvel at the goodness of visualization every time a table is accribitzed into a map. Fortunately for me, a cartographer, this means I marvel a lot.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/1GeocodedSiteCities.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84051 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/1GeocodedSiteCities.png\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Now for some whiz-bang polygon generation! I used the \u201c<a href=\"http:\/\/pro.arcgis.com\/en\/pro-app\/tool-reference\/analysis\/create-thiessen-polygons.htm\" target=\"_blank\">generate Thiessen polygons<\/a>\u201d tool. Thiessen (or \u201cVoronoi\u201d to non-map people) polygons divvy up areas that are considered the closest to a seed point, before getting closer to another seed point. In real life, there are lots of practical conditions that would alter these, like natural barriers or road network conditions, etc. But they\u2019ll do for now.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/2Voronoi.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84052 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/2Voronoi.png\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Speaking of natural barriers, the Thiessen polygons stretch out into the oceans. Let\u2019s pull in a shape of the US land and have a look.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/3VoronoiPlusUSShape.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84053 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/3VoronoiPlusUSShape.png\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Using a\u00a0\u201c<a href=\"http:\/\/pro.arcgis.com\/en\/pro-app\/tool-reference\/analysis\/clip.htm\" target=\"_blank\">clip<\/a>\u201d tool, we can chop off the parts of the polygons that don\u2019t intersect land. Like a cookie cutter. Don\u2019t worry, Alaskans and Hawaiians, I\u2019ve included you too, you\u00a0just don\u2019t play well for screen-captures.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/4VoronoiClipped.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84054 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/4VoronoiClipped.png\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Remember those pesky sites that had multiple places in their name (akron\/canton, dallas\/ftworth, etc.)? So far, we have a zone for each named place in a craigslist site. The orange lines represent the within-site divisions\u00a0that we\u2019ll have to dissolve.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/5DissolveSameSiteCities.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84055 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/5DissolveSameSiteCities.png\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Running a \u201c<a href=\"http:\/\/pro.arcgis.com\/en\/pro-app\/tool-reference\/data-management\/dissolve.htm\" target=\"_blank\">dissolve by attribute<\/a>\u201d merges the geometry of same-named sites. Now we have some slightly weird, but more truthy, polygons.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/6FinishedCraigslistZones.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84056 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/6FinishedCraigslistZones.png\" alt=\"\" width=\"1919\" height=\"1038\" \/><\/a><\/p>\n<h2>Chalkboard\u00a0Styling<\/h2>\n<p>Let\u2019s style this sucker up! Did you know that you don\u2019t have to use a solid color to fill polygons? You can use a\u00a0<a href=\"https:\/\/adventuresinmapping.wordpress.com\/2016\/06\/09\/how-to-sharknado-map\/\" target=\"_blank\">hatched<\/a>\u00a0pattern (fun), a gradient (use judiciously), or a picture. Since I want the map to look as much like a chalkboard as possible, a simple black or slate colored background won\u2019t cut it. I\u2019ve made a chalkboard texture image to fill my background shapes. Beware, lots of green from here on.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/ChalkFillTextureSolidGreen.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84057 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/ChalkFillTextureSolidGreen.png\" alt=\"\" width=\"600\" height=\"600\" \/><\/a><\/p>\n<p>I have a shapefile of continents, and a shapefile of oceans, which happen to combine to fill the screen. You can use whatever file you want, as long as it covers your whole view. Using the chalky image as the picture fill for these polygons gives us a nice chalkboard-looking \u201cbasemap.\u201d<\/p>\n<p>In the Layout, you could alternatively just add a rectangle and use this image as a picture fill. Whatever&#8217;s easier for you.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/7ChalkTextureFill.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84058 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/7ChalkTextureFill.jpg\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Now, to bring in the Craigslist states. But how to make them look like they were drawn with chalk? To me, chalk lines have a chunky, stippled, look from one material being scraped over another material.<\/p>\n<p>If I give the stroke a dashed effect, then randomize the dash-iness (a series of numbers telling the map how many pixels to draw and skip and draw and skip), it has a sort of chalk-like feel. Then if I do the same thing for a second version of the lines, but with a thicker and more transparent stroke, they combine into something that looks pretty good!<\/p>\n<p>Here\u2019s what I used (but, it&#8217;s like, random, so feel free to type out your own set of numbers):<\/p>\n<p>Thin Line<br \/>\n2pt, #FFFFFF, 40% transparent<br \/>\nDash template: 4 3 1 6 1 4 8 1 2 3<\/p>\n<p>Thick line<br \/>\n5pt, #FFFFFF, 80% transparent<br \/>\nDash template: 3 2 4 5 2 3 2 5 4<\/p>\n<p>Here\u2019s a closer look at my hack chalk lines\u2026<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/ChalkDetail.png\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84059 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/ChalkDetail.png\" alt=\"\" width=\"1237\" height=\"647\" \/><\/a><\/p>\n<p>Time for some United States of Craigslist labeling. I\u2019m using the\u00a0<em>site<\/em>\u00a0name. I chose one of the chalky outline layers, and I turned labeling on. You can monkey with specific details like letter spacing, placement properties, arcing along latitudes, etc. But here the chalk-specific things: Font, color, and effect.<\/p>\n<p>I spent about three minutes looking at script-style fonts on my machine and found MV Boli to be fine. It looks an awful lot like Comic Sans, which I find to be cheeky, but it\u2019s not, so I\u2019m shielded\u00a0from specific scorn by a technicality. Anyway, it looks reasonably hand-scrawled (I pushed it to all caps).<\/p>\n<p>A pastel color (lighter than you may be thinking) helps convey chalk. I used #BEFFE8 with a transparency of 30%. Then I applied the same color as an outline but with a 70% transparency. This helps with that fuzzy irregular edgedness of chalk.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/9Labels.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84060 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/9Labels.jpg\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Since I\u2019m proposing a radical, blood-soaked, re-thinking of states and re-drawing of their borders, it is helpful to draw in the current state boundaries for some context. I picked a similarly pastel-ish chalk color of #FFBEBE. Like my other lines, I applied a somewhat random dash pattern and made a version that is thinner and slightly transparent, and a version that is thicker and more transparent. There. States.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/10States.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84061 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/10States.jpg\" alt=\"\" width=\"1919\" height=\"1038\" \/><\/a><\/p>\n<p>Craigslist states, and real states.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/10StateRef.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84062 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/10StateRef.jpg\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<h2>Chalkboard Layout<\/h2>\n<p>Ok, time to fine-tune some of the layout and design elements of this thing. I\u2019ve inserted a new layout and added my map. I also made an Alaska version and a Hawaii version in separate map views (just copy\/paste the layers) so I can add them to the layout as insets.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/11LayoutWithAKHI.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84063 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/11LayoutWithAKHI.jpg\" alt=\"\" width=\"1913\" height=\"1032\" \/><\/a><\/p>\n<p>Whew.\u00a0All that geography stuff out of the way. Now it\u2019s time to lob\u00a0delicious\u00a0skeuomorphic clutter all over this thing!<\/p>\n<p>In a graphic design tool, I made an image overlay to fit on top of my layout so that its full chalkboard potential could be realized. It includes some vignetting, leftover chalk dust in the corner that never gets fully erased, and of course a fine wooden tray to hold the chalk and eraser.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/VignetteThumbnail.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84064 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/VignetteThumbnail.jpg\" alt=\"\" width=\"799\" height=\"432\" \/><\/a><\/p>\n<p>Yes!<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/12OverlayGraphics.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84065 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/12OverlayGraphics.jpg\" alt=\"\" width=\"1246\" height=\"779\" \/><\/a><\/p>\n<p>Always sign your work.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/13OverlayDetail.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84066 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/13OverlayDetail.jpg\" alt=\"\" width=\"1588\" height=\"805\" \/><\/a><\/p>\n<p>Then I dropped in a title image, and we have it! A chalkboard map of the United States of Craigslist. Good times.<\/p>\n<p><a href=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/UnitedStatesOfCraigslist.jpg\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-84049 noIMGBackground aligncenter\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2017\/07\/UnitedStatesOfCraigslist.jpg\" alt=\"\" width=\"3200\" height=\"2000\" \/><\/a><\/p>\n<p>Happy Chalkboard Mapping! <a href=\"https:\/\/twitter.com\/John_M_Nelson\" target=\"_blank\">John<\/a><\/p>\n"}],"authors":[{"ID":6971,"user_firstname":"John","user_lastname":"Nelson","nickname":"John Nelson","user_nicename":"j_nelson","display_name":"John Nelson","user_email":"John_Nelson@esri.com","user_url":"http:\/\/www.adventuresinmapping.com","user_registered":"2018-03-02 00:19:05","user_description":"I have far too much fun looking for ways to understand and present data visually, hopefully driving product strategy and engaging users. I work in the ArcGIS Living Atlas team at Esri, pushing and pulling data in all sorts of absurd ways and then sharing the process. I also design user experiences for maps and apps.\r\nWhen I'm not doing those things, I'm chasing around toddlers and wrangling chickens, and generally getting into other ad-hoc adventures. Life is good.\r\nYou might also like these Styles for ArcGIS Pro: esriurl.com\/nelsonstyles","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2018\/04\/Profile.jpg' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How-To: United States of Craigslist, Chalkboard Style!<\/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.esri.com\/arcgis-blog\/products\/analytics\/analytics\/how-to-united-states-of-craigslist-chalkboard-style\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How-To: United States of Craigslist, Chalkboard Style!\" \/>\n<meta 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