thangalin edited this page Jul 18, 2012 · 7 revisions

Cascadenik implements cascading stylesheets for Mapnik.

It's an abstraction layer and preprocessor that converts special, CSS-like syntax into Mapnik-compatible style definitions. It's easier to write complex style rules using the alternative syntax, because it allows for separation of symbolizers and provides a mechanism for inheritance.

Cascadenik supports many of Mapnik’s features in a simple declarative form:

/* Define a few colors */
@color_road_name: #000;
@color_background: #fff;
@color_road_line: #f90;

/* Start with a plain background. */
    map-bgcolor: @color_background;

/* Draw the roads. */
    /* Usually, 3px wide */
    line-width: 3;
    line-color: @color_road_line;
    /* Make the important ones wider */
    &[kind=major] { line-width: 4 }
    &[kind=highway] { line-width: 5 }
    /* Add the road names. */
        text-placement: line;
        text-face-name: "DejaVu Sans Book";
        text-fill: @color_road_name;
        text-size: 12;

See more examples at


Clone this wiki locally
You can’t perform that action at this time.
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.
Press h to open a hovercard with more details.