Node Template Editor¶

The Node Template Editor lets you create and edit custom SVG node shapes. Node templates replace the default square or label shapes used in map visualizations.

Opening the editor¶

Navigate to /template/new to create a new template, or click an existing template in the template library to edit it.

Editor interface¶

The editor provides:

• Name field — a display name for the template
• SVG editor — a text area for entering the SVG fragment
• Preview — a live preview of the rendered node

Writing a template¶

The template field accepts an SVG fragment — the content of a <g> element. The fragment is centered on the node's position on the map, so coordinates should be relative to (0, 0).

Example: a simple diamond shape

<g>
  <polygon points="0,-8 8,0 0,8 -8,0" />
</g>

Example: a circle with a label

<g>
  <circle r="6" />
  <text y="16" text-anchor="middle" font-size="8">{{ endpoint_name }}</text>
</g>

Jinja2 variables¶

Use {{ variable_name }} to insert data from the node's record at render time. Commonly available:

• {{ endpoint_name }} — the node's display name

The available variables depend on the fields present in the datasource data.

Saving¶

Click Save to save the template. It will then be available in the Map Editor's layer configuration as a selectable node template.

Default templates¶

If no custom template is assigned to a layer, Terranova uses its built-in defaults:

• Geographic mode: a small square (<rect>)
• Logical mode: a rounded label showing the endpoint name

See Node Templates for the full SVG source of each default.