CSS Style Examples¶

Markers Sized by an Attribute Value¶

The following produces square markers at each point, but these are sized such that the area of each marker is proprtional to the REPORTS attribute. When zoomed in (when there are less points in view) the size of the markers is doubled to make the smaller points more noticable.

* {
  mark: symbol(square);
}

[@scale > 1000000] :mark {
  size: [sqrt(REPORTS)];
}

/* So that single-report points can be more easily seen */
[@scale < 1000000] :mark {
  size: [sqrt(REPORTS)*2];
}

This example uses the sqrt function. There are many functions available for use in CSS and SLD. For more details read - Filter Function Reference