Tools

Tiles Tool

Download and view web map tiles (satellite, roads, terrain).

Menu: Tools → Tiles Tool

Usage

1. Click tiles to select (toggle selection)
2. Choose Provider (e.g., Esri World Imagery, OpenStreetMap)
3. Set Zoom level
4. Click GO

The mosaic opens in a new window.

Features

• Anchor — Drag the star to center view
• Pan — Use scrollbars at edges
• Cache — Where tiles are stored (default: ~/.gmt/cache_tileserver)
• Mercator — Toggle Mercator vs Geographic projection
• Background — At high zoom, shows coarse preview

Keyboard/Mouse

• Click — Toggle tile selection
• Drag — Pan the view
• Scroll — Zoom in/out
• Drag star — Move anchor point

Base Map Picker

Quick-add a world base map tile.

Toolbar: Click [Base Map] button (grid icon before shapes flyout)

Usage

1. Picker shows 4×8 tile grid over ETOPO
2. Click a tile or drag a region
3. Tile loads as georeferenced image

Options

• World-Map-Tiles — 45° patches
• Whole World-Map — Full globe
• [-180 180] vs [0 360] — Pacific-centered

3-D Bodies Flyout

Quick-insert geometric solids.

Toolbar: Click [3-D Bodies] button (flyout menu)

Solids

• Platonic — Tetrahedron, Octahedron, Dodecahedron, Icosahedron
• Primitives — Cube, Sphere, Cylinder, Cone, Torus
• Operations — Revolve, Loft, Extrude

Placement

• Empty launcher: Solid replaces blank space
• Existing solid: New solid replaces it
• Grid window: Solid opens in new window