ARSYSplotQGIS

Archaeostratigraphic workspace for excavation XYZ points. Opens its own window; nothing is added to the QGIS map or legend.

Open the plugin

Toolbar icon, or Plugins → Vector → ARSYSplotQGIS.

Quick start

1. Load sample (bundled sample.csv), or Import CSV, or Use selected layer.
2. Turn group chips on/off. Drag the X Y Z sliders.
3. Wheel zooms a view; drag pans; Zoom opens a large window; Reset restores the initial view.
4. Optional: Density → On. Use Draw → None to see the surface alone.
5. Optional: Open 3D view.

Views

Data

Import CSV detects comma, semicolon, tab or pipe. Three XYZ layouts (per row): P1 only (point); P1→P2 (vector: stored as P2/P3 with P1 = midpoint); P1 + P2 + P3 (unchanged: point P1, vector P2→P3). Group is the colour class.

Sample columns: p1x | p1y | p1z | p2x | p2y | p2z | p3x | p3y | p3z | material | categoria | taxo | nivell.

Filters and draw

• Group — field, coloured chips, All / None.
• XYZ range — clip the cloud.
• Adaptive frame — Off: full extent. On: zoom to the filtered cloud.
• Draw — Points (P1), Vectors, Both, or None (for density).

Density

Kernel density of the filtered points. Stays inside the plugin.

• Show — Heatmap, Isolines, or Both.
• Min / Max — one stretch for plan, X/Z and Y/Z. Values come from the plan peak, then apply to each view’s own peak (Auto Max = local peak). Below Min is not drawn.
• Radius / Cell — bandwidth and cell size. Auto suggests values from the extent.
• Kernel — Quartic, Triangular, Uniform, Triweight, Epanechnikov. Min/Max update for each kernel.
• Isolines / Labels / Opacity / Colour — contour count, line labels, fill opacity, palette.

Export

Each view: PNG paper figure of the data frame (title, subtitle, background, 96–600 dpi) with metre axes, grid, scale bar and legend.

Requirements and licence

QGIS 3.22 or later (tested on 3.40). No extra Python packages. GNU GPL-2.0-or-later.

Full documentation: github.com/acanals/ARSYSplotQGIS