Advanced CartoCSS Techniques

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Advanced CartoCSS Tricks Stamen Stamen Design! Seth Fitzsimmons, Alan McConchie and Kate Watkins

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Maps with distinct personalities

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Pinterest Goal: Playful, handcrafted

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Label Clippin

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Approach #1: buffering Map { buffer-size: 128; }

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Approach #2: meta tiling

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Filter Labels by Length! ! ! [name=~'^.{12,}$'] { text-name: ''; }

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Map { font-directory: url("fonts/"); } ! #place_label { text-face-name: "Helvetica Medium"; } Custom Fonts

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text-line-spacing: -6; text-character- spacing: -3; text-halo-radius: 2; text-halo-fill: black; text-fill: transparent; ! ! Leading and Kerning

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#state_label { [name='California'] { text-orientation: -44; text-size: 20; } } Position Overrides

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Entropy and Labeling #place_label { text-orientation: [osm_id] % 3 - 1.5; ! [osm_id<0] { text-orientation: ([osm_id] * -1) % 3 - 1.5; } }

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Textures

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Map { background-image: url("texture.png"); } ! #landuse[type='park'] { polygon-fill: #c3e0b6; comp-op: multiply; } Texturing

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#water { ::shadow { polygon-fill: lighten(#444, 1%); } ! ::fill { polygon-fill: #fff; comp-op: soft-light; image-filters: agg-stack-blur(10,10); } ! ::background { polygon-pattern-file: url("images/bg.png"); comp-op: hard-light; } } Drop Shadows

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Parks Conservancy Goal: Get people to the Parks!

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Shield and Marker trick

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shield-unlock-image: true; shield-fill: #333; shield-text-dx: 0.1; shield-wrap-width: 48; shield-face-name: "Frutiger LT 45 Light Bold"; shield-file: url("images/ cafe_36x18px_buffer.svg"); ! shield-dx: -9; shield-size: 12; shield-text-dy: -14; ! marker-file: url("images/ cafe_36x18px_buffer.svg"); marker-transform: "translate(-9)”; ! Shields and Markers

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[type='Overlook'] { [orientation=15] { marker-file: url("images/ overlook2_36x18px_invert_buffer_15.svg"); } [orientation=45] { marker-file: url("images/ overlook2_36x18px_invert_buffer_45.svg"); } ... ! Marker Transformations

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Symbol Fonts and! Unicode Characters

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Symbol Fonts and! Unicode Characters #place_label { text-name: '\x272a' + [undefined]; // star }

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Map Scraps

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display: none; // text text-name: ‘'; // will still populate the collision cache text-fill: transparent; ! // lines line-width: 0; ! // polygons polygon-opacity: 0; ! // markers marker-width: 0; !

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polygon-pattern-file: url("dot.png"); polygon-pattern-alignment: global; + = polygon-fill: #86c250;