Creates an edge from one table's column to another's, for diagrams built
with create_table_node() and rendered by lineage_flow(). Table and
column names must match the table_name and columns used when
creating the nodes.
Usage
create_column_edge(
from_table,
from_column,
to_table,
to_column,
label = NULL,
animated = FALSE
)Arguments
- from_table, from_column
Table and column the data comes from.
- to_table, to_column
Table and column the data flows into.
- label
Optional label drawn on the edge, typically the transformation applied (e.g.
"SUM()").- animated
If
TRUE, the edge is drawn with a moving dash pattern. Useful for drawing attention to aggregations.
Value
An edge list ready to pass to lineage_flow()
See also
Other manual lineage builders:
create_table_node(),
lineage_example()
Examples
# A direct column mapping
create_column_edge("customers", "id", "customer_summary", "customer_id")
#> $id
#> [1] "e_customers.id_to_customer_summary.customer_id"
#>
#> $source
#> [1] "customers"
#>
#> $target
#> [1] "customer_summary"
#>
#> $sourceHandle
#> [1] "id"
#>
#> $targetHandle
#> [1] "customer_id"
#>
#> $animated
#> [1] FALSE
#>
#> $style
#> $style$stroke
#> [1] "#64748b"
#>
#> $style$strokeWidth
#> [1] 2
#>
#>
# An aggregation, labeled and animated
create_column_edge("orders", "amount", "customer_summary", "total_spent",
label = "SUM()", animated = TRUE
)
#> $id
#> [1] "e_orders.amount_to_customer_summary.total_spent"
#>
#> $source
#> [1] "orders"
#>
#> $target
#> [1] "customer_summary"
#>
#> $sourceHandle
#> [1] "amount"
#>
#> $targetHandle
#> [1] "total_spent"
#>
#> $animated
#> [1] TRUE
#>
#> $style
#> $style$stroke
#> [1] "#64748b"
#>
#> $style$strokeWidth
#> [1] 2
#>
#>
#> $label
#> [1] "SUM()"
#>
#> $labelStyle
#> $labelStyle$fill
#> [1] "#64748b"
#>
#> $labelStyle$fontWeight
#> [1] 500
#>
#> $labelStyle$fontSize
#> [1] 11
#>
#>
#> $labelBgStyle
#> $labelBgStyle$fill
#> [1] "#ffffff"
#>
#> $labelBgStyle$fillOpacity
#> [1] 0.9
#>
#>