task_charts__contour_density__density_threshold_region_count

Contract

1. Domain: charts
2. Scene id: contour_density
3. Source implementation scene: charts/contour_density
4. Query ids: density_at_least_threshold_region_count, density_below_threshold_region_count
5. Semantic query details are recorded in query_id and trace params.

Implementation

1. Registered class: trace_tasks.tasks.charts.contour_density.density_threshold_region_count.ChartsContourDensityDensityThresholdRegionCountTask
2. Prompt lookup domain/scene: charts/contour_density
3. Generation is deterministic from instance_seed, explicit params, prompt bundle, renderer config, and code versions.
4. Answers and annotation are produced from the same metadata execution trace.

Annotation Contract

1. Answer schema: integer_count.
2. Annotation schema: bbox_set.
3. Annotation should mark every region matching the visible density-level threshold.
4. Renderer context such as axes, decorative labels, titles, and background treatments is metadata unless the task explicitly asks for it as annotation.

Program Contract

Program: count(region where compare(density_level(region), threshold_level, relation={at_least,below})); output=integer_count; annotation=bbox_set(matching_regions); scene=contour_density; scope=density_threshold_region_count

Candidate set: the visible contour-density regions, guide labels, and marked areas inside the density_threshold_region_count objective scope. Operands: prompt-bound labels, categories, series names, thresholds, intervals, references, and encoded chart values, plus the active query id's comparator, direction, target role, or extremum focus when present. Operation: evaluate count over the candidate set using the filters, comparisons, aggregations, rankings, projections, or counterfactual edits named in the program expression; generation enforces a unique final answer. Output binding: answer is the integer_count value bound by integer_count. Annotation witnesses: bbox_set witnesses bound by bbox_set(matching_regions). Annotation should mark every region matching the visible density-level threshold. Renderer context such as axes, decorative labels, titles, and background treatments is metadata unless the task explicitly asks for it as annotation. Query ids: density_at_least_threshold_region_count, density_below_threshold_region_count.

Reasoning Operations

Families: filtering, counting, comparison

Query Details

Query id	Program signature	Answer schema	Annotation schema
density_at_least_threshold_region_count	count.density_threshold_regions	integer_count	bbox_set
density_below_threshold_region_count	count.density_threshold_regions	integer_count	bbox_set