Layer Styling

Layer Styling

Customize how your map features appear using layer styles. Each layer has its own style settings that apply to all features within it. You can also override styles on individual features via the Properties panel.

Accessing Style Settings

  1. Click on a layer in the Layers panel
  2. Click the paint brush icon, or
  3. Click "Edit Style" in the Legend panel

Fill Styling (Polygons)

  • Fill Color — The interior color of polygons
  • Fill Opacity — Transparency from 0% (invisible) to 100% (solid)
Use lower opacity (30-60%) for overlapping polygons so you can see through to features beneath.

Stroke Styling (Lines & Polygon Outlines)

  • Stroke Color — The line or outline color
  • Stroke Width — Thickness from 1 to 8 pixels

Point Markers

Points can be displayed as simple shapes or custom icons:

  • Shape — Circle, Square, Triangle, Diamond, Star, or Pin
  • Custom Icon — Upload an image or enter a URL
  • Icon Size — From 16 to 64 pixels

Using Custom Icons

  1. In the layer style editor, select "Custom" for point style
  2. Click "Upload" to choose an image file, or
  3. Paste an image URL
  4. Adjust size as needed
PNG images with transparency work best. Square images (64x64 pixels) are recommended.

Feature Labels

Display text labels on your features to identify them at a glance. Labels can be configured per-layer or toggled globally.

  • Toggle labels — Enable or disable labels for each layer in the style settings
  • Label field — Choose which property to display (e.g., name, ID, or any attribute)
  • Label size — Set the font size in pixels
  • Label color — Pick a text color that contrasts with your basemap
  • Label halo — Add an outline around the text for readability on busy backgrounds
  • Halo color and width — Customize the outline appearance
Use the global label toggle in Map Settings to quickly show or hide all labels across every layer at once.

Data-Driven Styling

Color features based on their attribute values to create thematic maps. This is useful for visualizing variations in population, property values, categories, or any other attribute in your data.

  1. Open the layer style editor
  2. Click "Data-Driven" in the styling panel
  3. Select a property/field to classify by
  4. Choose a classification method
  5. Select a color ramp from 7 built-in palettes

Classification Methods

  • Categorical — Assigns a unique color to each distinct value. Best for text fields like land use type, country name, or status codes.
  • Quantile — Divides features into equal-count groups so each color class contains roughly the same number of features. Best when data values are unevenly distributed (e.g., income or population where a few outliers skew the range).
  • Equal Interval — Divides the value range into equal-width bins. Best for evenly distributed numeric data where the difference between values matters (e.g., elevation, temperature).
When you apply data-driven styling, the legend automatically updates to show the color classes and their value ranges.

Per-Feature Overrides

Individual features can have their own style that overrides the layer default. Select a feature and use the Properties panel to change its fill color, stroke, or other settings independently.

Style Preview

The style editor shows a live preview with example polygon, line, and point features so you can see exactly how your styling will look before applying it.