color_bar — ANNOTATE `furniture` op

• Data kinds: image2d × lut → image2d

• Call: import fullseye as fs; fs.ledger.color_bar(img, lut, rect, vmin=0.0, vmax=1.0, unit='', label_fmt='{:g}', orientation='vertical', font_size=12, font_path=None, scheme='okabe_ito', border=1, border_color='neutral', text_color=None, style=None) (to call the implementation directly, import annotate; annotate.color_bar(img, lut, rect, vmin=0.0, vmax=1.0, unit='', label_fmt='{:g}', orientation='vertical', font_size=12, font_path=None, scheme='okabe_ito', border=1, border_color='neutral', text_color=None, style=None); from the registry, opsannotate.get("color_bar"))

Usage

The legend of a LUT (a colour bar), labelled with its minimum, maximum and unit.

Parameters

lut : (n,3) or (n,)

Colour lookup table. float [0,1]. The output of palette.diverging_lut as is.

rect : (x, y, w, h)

Rectangle of the bar (top-left origin).

vmin, vmax : float

Values at both ends. vmin == vmax makes the ticks meaningless, so ValueError.

orientation : {'vertical','horizontal'}

'vertical' has vmax at the top (row points down, so the LUT is flipped).

Returns

ndarray

Raises

ValueError

LUT shape/range, rectangle sticking out, vmin==vmax, unknown orientation.

Detailed usage guide

• figure_annotation family guide

Background guides (the physics and conventions behind this op)

• dataset_conventions — Training-dataset conventions — COCO / YOLO / VOC and pitfalls in visual inspection

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• annotate_gallery — py -3.11 examples/annotate_gallery.py

• poc_cad_scan_deviation — py -3.11 examples/poc_cad_scan_deviation.py

• poc_ct_void_morphology — py -3.11 examples/poc_ct_void_morphology.py

• poc_dem_terrain — py -3.11 examples/poc_dem_terrain.py

• poc_lidar_terrain_change — py -3.11 examples/poc_lidar_terrain_change.py

• poc_multibeam_bathymetry — py -3.11 examples/poc_multibeam_bathymetry.py

• poc_stockpile_volume — py -3.11 examples/poc_stockpile_volume.py

Ops the type connects to (they accept `image2d` as input)

text_box · arrow · leader_line · label_points · crosshair · legend_box · scale_bar · axes_frame

Same category (`furniture`)

legend_box · scale_bar

*Provenance: annotate.py — ANNOTATE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

color_bar — ANNOTATE furniture op