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
- Click on a layer in the Layers panel
- Click the paint brush icon, or
- 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)
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
- In the layer style editor, select "Custom" for point style
- Click "Upload" to choose an image file, or
- Paste an image URL
- Adjust size as needed
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
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.
- Open the layer style editor
- Click "Data-Driven" in the styling panel
- Select a property/field to classify by
- Choose a classification method
- 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).
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.