02Viz - Geospatial Visualization Studio
Charts, map diagrams and labels from your layers: 20 interactive chart types, bar-chart races, small multiples and one-click layer profiles, linked to the map and exported as interactive HTML, vector SVG or PDF, or PNG at the size you choose.
02Viz puts a data visualisation studio inside QGIS: one dock with three tabs, Charts, Map diagrams and Labels, working on your layers, attribute tables and external CSV or Excel files.
CHARTS: 20 TYPES, THREE OFFLINE ENGINES: Bar (vertical or horizontal), lollipop, line, area, scatter plot, bubble, histogram, pie chart, box plot, heatmap, treemap, sunburst, mean ± σ band and bars, density (KDE), violin, radar, Pareto, ECDF and Lorenz/Gini curves, rendered with Apache ECharts, Plotly.js and Vega-Lite, all bundled for offline use. Line and area charts read date fields as dates for time series. Built-in aggregation includes std and IQR, with group and colour-by, Top-N, trend lines, reversed axes and reference overlays for mean, median, a target value, a ±1σ band and the inter-quartile band. Use layer colours gives chart categories the colours of the layer's categorized or rule-based style.
ANIMATION AND SMALL MULTIPLES: Animate bar, lollipop, line, area, scatter, bubble or pie charts over a time or sequence field in ECharts or Plotly, for bar-chart races that re-sort every frame, Gapminder-style bubbles or changing compositions, with a play axis and slider while the value axis and colours stay fixed. Or split the same seven chart types into a small-multiple grid of up to 12 panels, in all four engines.
EXPLORE: ONE-CLICK LAYER PROFILE: KPI cards with completeness, a field summary (type, missing rate, distinct values, range or top values), automatic charts, a normalised box plot that puts every numeric field on one axis, a correlation matrix and plain-language findings about skew, outliers, Gini concentration and near-empty fields. A Suggest button reads your fields and recommends the most informative chart.
LINKED TO THE MAP: Click a bar, slice or point to select its features on the map; select features on the map to highlight them in the chart while the rest are dimmed. Editing the charted layer redraws the chart, so clicks keep selecting the right features.
MAP DIAGRAMS: Native QGIS pie, bar, stacked and text diagrams on every feature, with min-max, z-score or log normalisation so fields on different scales stay comparable, proportional sizing by a field, opacity, and an option to let QGIS drop crowded diagrams.
LABELS: Formatted multi-line labels with rounding, thousands separators, prefixes, suffixes and units, case and word-wrap, a second field on its own line, a rounded background chip or any QGIS expression, with a live preview.
STYLE AND EXPORT: Eight palettes plus a swatch editor applied identically in every engine, custom Vega-Lite specifications, dashboard tiles, and export to a self-contained interactive HTML page, a vector SVG drawn by the engine itself and a vector PDF made from it, or PNG at the size you choose. A built-in offline guide includes copy-ready expression recipes.
The optional fourth engine, matplotlib, draws static figures (with seaborn styling when seaborn is installed). matplotlib ships with OSGeo4W QGIS on Windows; where it is missing, the plugin shows the command that installs it into the QGIS Python. Everything else works out of the box.
Manual: https://geophilo.com/zero2viz/manual.html