View source: R/sankeydiagram.R

Identifies the pair of nodes to merge which will minimize distinct links. Note this uses the weights, so adding multiple small links may be preferred to adding a single heavy link. Note also that the link to the merged node i.e. (A,B+C) is the has a weight that is the sum of (A,B) and (A,C). The relative proportions are not taken into account.

1 | ```
findNodesToMerge(df, column, weights = NULL)
``` |

`df` |
dataframe containing factor variables only. |

`column` |
index of the column which we are looking to merge nodes for |

`weights` |
numeric vector containing weights for each row of |

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