task_charts__matrix__threshold_cell_count

Contract

1. Domain: charts
2. Scene id: matrix
3. Source implementation scene: charts/matrix
4. Supported query_id values: row_at_least_threshold_cell_count, row_at_most_threshold_cell_count, column_at_least_threshold_cell_count, column_at_most_threshold_cell_count
5. Query ids bind the prompt-visible row/column axis and at-least/at-most comparison. The threshold value and selected row/column label are sampled generation metadata.

Implementation

1. Registered class: trace_tasks.tasks.charts.matrix.threshold_cell_count.ChartsMatrixThresholdCellCountTask
2. Prompt lookup domain/scene: charts/matrix
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 marks exactly the cells in the selected row or column that satisfy the threshold condition.
4. Matrix headers, legends, titles, and distractor text are context unless the task explicitly asks for them as annotation.

Program Contract

Program: count(filter(line_cells(axis={row,column}, axis_label), compare(value(cell), threshold, relation={at_least,at_most}))); output=integer_count; annotation=bbox_set(counted_cells); scene=matrix; scope=threshold_cell_count

Candidate set: the visible matrix cells with row and column labels inside the threshold_cell_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(counted_cells). Annotation marks exactly the cells in the selected row or column that satisfy the threshold condition. Matrix headers, legends, titles, and distractor text are context unless the task explicitly asks for them as annotation. Query ids: row_at_least_threshold_cell_count, row_at_most_threshold_cell_count, column_at_least_threshold_cell_count, column_at_most_threshold_cell_count.

Reasoning Operations

Families: filtering, counting, comparison

Query Details

Query id	Program signature	Answer schema	Annotation schema
row_at_least_threshold_cell_count	count.matrix_axis_threshold(axis=row,relation=at_least)	integer_count	bbox_set
row_at_most_threshold_cell_count	count.matrix_axis_threshold(axis=row,relation=at_most)	integer_count	bbox_set
column_at_least_threshold_cell_count	count.matrix_axis_threshold(axis=column,relation=at_least)	integer_count	bbox_set
column_at_most_threshold_cell_count	count.matrix_axis_threshold(axis=column,relation=at_most)	integer_count	bbox_set