Tree Attribute Histograms

Reads height and NDVI_median from a polygon layer, groups by tree_type, and generates side-by-side distribution histograms for each species or variety group. Saves a PNG per group and displays each chart on screen.

$20 USD One-time purchase · Instant download

Buy on Gumroad

What you get

plot_tree_attributes_histograms.py

Free updates via Gumroad

What it does

Grouped by tree_type

Reads the tree_type field and generates a separate chart for each distinct value — one per species or variety group in your dataset.

Side-by-side histograms

Each chart shows height distribution on the left and NDVI_median distribution on the right, making cross-attribute comparison immediate.

PNG export

Each chart is saved as {tree_type}_distribution.png alongside the source layer file — ready to drop into a report or presentation.

Displayed on screen

Charts also pop up during the run so you can review them without opening the exported PNG.

How to use it

1
Ensure your polygon layer has height, NDVI_median, and tree_type fields (generated by the tree height and NDVI scripts).
2
Click the polygon layer to make it the active layer.
3
Open Plugins → Python Console → Show Editor.
4
Paste the script and click Run.

Requirements

QGIS 3.28 or newer
matplotlib — install via OSGeo4W Shell if not present
Active polygon layer with height, NDVI_median, and tree_type fields

Also in the Vegetation & Field Analysis Pack

Get all 6 vegetation scripts for $40 — save $20 vs buying individually.

View bundle