Basic styling
Layer styling allows you to customize the visual appearance of your data to create clear, appealing maps. GOAT automatically assigns default styles based on your data type (points, lines, or polygons), but you can customize colors, strokes, opacity, and other visual properties.
How to style your layers
Layer design 
and find the Style sectionFill color, Stroke color, Stroke width, Line style (line layers only), Clustering, Custom Marker and Point settings (point layers only).Fill color
Fill color defines the interior appearance of point and polygon features.
On Color use the Color picker to select your color or the Preset colors to choose from the predefined color palette.
opacity slider or enter a value between 0 (transparent) and 1 (opaque) to control transparency.Stroke color
Stroke color applies to the outlines and edges of map features. It helps distinguish features and enhance their visibility.
Color use the Color picker or the Preset colors to customize stroke appearance.Stroke width
Stroke width move the slider to adjust the thickness of lines and feature outlines.Line style
The Line style section is available for line layers only and controls the pattern and decoration of lines.
Pattern:
Pattern, choose how the line is drawn: Solid, Dashed, Dotted, or Dash-dot. When a non-solid pattern is selected, a Density dropdown appears with options Tight, Normal, or Loose.Arrows:
Arrows, choose the arrowhead direction: None, Forward, Backward, or Both. When any direction is selected, additional controls appear:Placement— where the arrows are placed:Repeat along line,Start of line,End of line,Both ends, orCenter (one per line).Arrow size— slider to control the arrowhead size.Arrow spacing— slider to control the distance between repeated arrows (only visible when Placement isRepeat along line).Allow overlap— checkbox to prevent arrows from being hidden when they overlap.
Advanced Options (expand to access):
Advanced Options to configure:Cap— how line endpoints are rendered:Butt,Round, orSquare.Join— how corners between line segments look:Bevel,Round, orMiter.Offset— shifts the line visually left or right of its actual geometry. Useful for parallel roads or directional lanes. Note: this is a visual shift only — hit-testing and snapping still use the original geometry.
Clustering
Clustering groups nearby point features into a single marker with a count, keeping the map readable when many points overlap.
Clustering toggle to activate clustering for your point layer.Cluster radius slider to control how close points need to be to merge into a cluster. A larger radius groups more points together.Advanced Options to further configure Min cluster size, Max zoom to cluster, Cluster color, and Text color.Custom markers
For point layers, you can use custom markers instead of basic shapes.
Custom Marker toggle to enable custom markersSelect Marker and browse the icon library or upload your own marker by clicking on the Custom tab and uploading your file (JPEG, PNG, or SVG format).Manage icons to rename or delete uploaded iconsSize adjust the marker size using the slider
You can only edit the color of icons from the library, not uploaded custom icons.
Point settings
Point settings, on Size adjust the radius using the slider or enter precise values in the text box for exact control.Copy and paste style
The Layer Design panel has three quick-action icons at the top to manage styles across layers: Copy style, Paste style, and Set as default. This lets you apply a consistent look across multiple layers without reconfiguring each one manually.
Layer design .Copy style icon at the top of the panel.Layer design panel, and click Paste style to apply the copied style.Set as default to save the current style as the default for future uses of this dataset.Explore attribute-based styling for advanced visualization options based on your data values.