Styling Natural Earth with GeoServer CSS

Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth one can build a variety of visually pleasing, well-crafted maps with cartography or GIS software.

GeoServer GeoCSS is a CSS inspired language allowing you to build maps without consuming fingertips in the process, while providing all the same abilities as SLD.

In this presentation we’ll show how we have built a world political map and a world geographic map based on Natural Earth, using CSS, and shared the results on GitHub. We’ll share with you how simple, compact styles can be used to prepare a multiscale map, including: * Leveraging CSS cascading. * Building styles that respond to scales in ways that go beyond simple scale dependencies. * Various types of labeling tricks (conflict resolution and label priority, controlling label density, label placement, typography, labels in various scripts, label shields and more). * Quickly controlling colors with LessCSS inspired functions. * Building symbology using GeoServer large set of well known marks.

Join this presentation for a relaxing introduction to simple and informative maps.

Transcript

1. Andrea Aime
   GeoSolutions
   Styling Natural Earth
   with GeoServer CSS
   

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2. GeoSolutions
   Enterprise Support
   Services
   Deployment
   Subscription
   Professional
   Training
   Customized
   Solutions
   GeoNode
   • Offices in Italy & US, Global Clients/Team
   • 40+ collaborators, 30+ Engineers
   • Our products
   • Our Offer
   

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3. Affiliations
   We strongly support Open
   Source, it Is in our core
   We actively participate in
   OGC working groups and
   get funded to advance new
   open standards
   We support standards
   critical to GEOINT
   

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4. Intro: Natural Earth and GeoCSS
   

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5. Natural Earth
   • Natural Earth is a public domain map dataset
   available at 1:10m, 1:50m, and 1:110 million
   scales.
   • Featuring tightly integrated vector and raster
   data
   

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6. GeoServer CSS (GeoCSS)
   • CSS inspired language for map styling
   • Compact, powerful, human readable, human
   writable
   * {
   stroke: blue;
   fill: #7EB5D3;
   label: [name];
   label-anchor: 0.5 0.5;
   font-fill: black;
   font-family: "Arial";
   font-size: 14;
   halo-radius: 2;
   halo-color: #7EB5D3;
   halo-opacity:0.8;
   }
   

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7. The challenge
   • Wanted to have a significant, yet not too
   complicated, base map, in CSS, for our training
   package
   • What about osm-styles?
   • Nice, but too
   complicated!
   

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8. The political map
   

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9. Political map of the world
   

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10. Political map of the world
    

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11. Political map of the world
    

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12. Political map of the world
    

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13. The layer group
    

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14. One sample style: countries
    /* @title Countries */
    [@sd > 20M][@sd < 70M] {
    stroke: darken(darkgray, 5%);
    stroke-width: 0.1;
    /* https://colorbrewer2.org/#type=qualitative&scheme=Pastel1&n=7 */
    fill: [Recode(MAPCOLOR7, 1, '#fbb4ae', 2, lighten('#b3cde3', '5%'),
    3, '#ccebc5', 4, lighten('#decbe4', '5%'), 5, '#fed9a6',
    6, '#ffffcc', 7, '#e5d8bd')];
    label: [NAME];
    label-anchor: 0.5 0.5;
    font-family: 'Noto Sans';
    font-size: 14;
    font-fill: lighten(black, 20%);
    halo-color: white;
    halo-radius: 1;
    halo-opacity: 70%;
    label-priority: [POP_EST];
    label-auto-wrap: 100;
    label-max-displacement: 50;
    }
    

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15. How about a physical map?
    

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16. Physical map of the world
    

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17. Physical map of the world
    

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18. Ok, how can I get it?
    

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19. But on GitHub, of course!
    • GeoSolution’s Natural Earth styles repository
    • https://github.com/geosolutions-it/ne-styles
    • The physical map is in a branch right now:
    • https://github.com/geosolutions-it/ne-styles/tree
    /physical
    

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20. That’s all folks!
    Questions?
    andrea.aime@geosolutionsgroup.com
    info@geosolutionsgroup.com
    

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