{{ selected_name|e if selected_name else 'Project' }} · ColTrace

{% if history_mode %}Column journey{% else %}Column dependencies{% endif %}

Click a block to inspect its source. Drag to explore.

OriginWrite / derive Read / useFrame passage Unresolved

Scroll to zoom · Drag to pan · Selection outlines: blue Upstream, green Downstream

{% if column_notice %}

{{ column_notice|e }}

{% endif %} {% if history_notice %}

{{ history_notice|e }}

{% endif %} {% if history_mode %}

{% if journey.fate %}

Observed destination

{{ journey.fate.label|e }}

{% if journey.fate.location %}

{{ journey.fate.location.path|e }}:{{ journey.fate.location.line }}

{% endif %}

{% endif %}

{{ stages|length }} column journey stagesSelect a stage

STEP {{ '%02d'|format(loop.index) }} {% if stage.continuity == 'unresolved' %}unverified export{% elif stage.relationship %}{{ stage.relationship|replace('_', ' ')|e }}{% elif stage.category == 'boundary' %}unresolved{% else %}{{ stage.category|e }}{% endif %}

{{ stage.location.path|e }}:{{ stage.location.line }}
{{ stage.module|e }}::{{ stage.scope|e }}
{% if stage.expression %}
```
{{ stage.expression|e }}
```
{% endif %} {% if stage.column_flow %}
{{ stage.column_flow|e }}
{% endif %} {% if stage.explanation %}
{{ stage.explanation|e }}
{% endif %} {% if stage.evidence != 'confirmed' or stage.completeness != 'complete' %}
Evidence: {{ stage.evidence|e }}Completeness: {{ stage.completeness|e }}
{% endif %}

{% if not stages %}

No recorded stages within the selected filters.

{% endif %}

Arrows express recorded causal links, not an execution log. Selecting a block highlights its Upstream stages with blue outlines and Downstream stages with green outlines. Dashed arrows indicate inferred or unresolved relations. Row filters change row membership while preserving values of retained columns. Supersedes links describe overwrite history, not value dependency.

{% if creation_stages %}

Creation context and full recorded history · {{ creation_stages|length }} stages

This auxiliary history includes ancestors, callback internals, control, and configuration. These are not all direct uses of the selected column.

CONTEXT {{ '%02d'|format(loop.index) }} {{ stage.category|e }}

{{ stage.label|e }}

{{ stage.location.path|e }}:{{ stage.location.line }}
{{ stage.module|e }}::{{ stage.scope|e }}
{% if stage.expression %}
```
{{ stage.expression|e }}
```
{% endif %}

{% endif %} {% else %}

This view displays column dependencies. Export a selected column with recorded history to follow its source, transformations, and uses.

{% endif %}

What happens to this column?

Destinations established by static analysis. A DataFrame use does not prove that an opaque function reads every column.

{% if journey.fate %}

{{ journey.fate.label|e }}

{% if journey.fate.location %}

{{ journey.fate.location.path|e }}:{{ journey.fate.location.line }}

{% endif %} {% if journey.fate.expression %}

{{ journey.fate.expression|e }}

{% endif %}

{% endif %}

Derived columns · {{ journey.derived_columns|length }}

{% for column in journey.derived_columns %}

{{ column.name|e }}

{{ column.relationship|e }}{% if column.distance > 1 %} · {{ column.distance }} hops{% endif %}

{% if column.definition %}

{{ column.definition.location.path|e }}:{{ column.definition.location.line }} · {{ column.definition.scope|e }}

{{ column.definition.expression|e }}

{% endif %} {% if column.upstream %}

Value inputs: {% for input in column.upstream %}{{ input.name|e }}@{{ input.version }}{% if not loop.last %}, {% endif %}{% endfor %}

{% endif %}

{{ column.fate.label|e }}{% if column.fate.location %}
{{ column.fate.location.path|e }}:{{ column.fate.location.line }}{% endif %}

{% for frame in column.dataframes %}

DataFrame: {% if frame.bindings %}{{ frame.bindings|map(attribute='name')|unique|join(', ')|e }}{% else %}{{ frame.origin|e }}{% endif %}
{{ frame.id|e }}

{% endfor %} {% if column.steps %}

Recorded uses · {{ column.steps|length }}

{{ step.relationship|replace('_', ' ')|e }} · {{ step.location.path|e }}:{{ step.location.line }} · {{ step.scope|e }}
{{ step.label|e }}

{% endif %}

{% else %}

No derived columns were established within these query filters.

{% endfor %}

Containing DataFrames · {{ journey.dataframes|length }}

{% for frame in journey.dataframes %}

{% if frame.bindings %}{{ frame.bindings|map(attribute='name')|unique|join(', ')|e }}{% else %}DataFrame{% endif %}

{{ frame.origin|e }} · {{ frame.module|e }}::{{ frame.scope|e }}
{{ frame.location.path|e }}:{{ frame.location.line }}

{{ binding.name|e }} · {{ binding.scope|e }} · {{ binding.location.path|e }}:{{ binding.location.line }}

{% if frame.uses %}

Observed column/frame uses · {{ frame.uses|length }}

{{ use.kind|e }} · {{ use.scope|e }} · {{ use.location.path|e }}:{{ use.location.line }}

{% endif %} {{ frame.id|e }}

{% else %}

No containing DataFrame was established in this view.

{% endfor %}

“Last recorded use” describes the limit of the analyzed evidence. It does not establish that a column is unused elsewhere.

Source details

Full source expression, location, column flow, and analysis evidence for the selected block.

Select a node.