create_unique_layer_node_ids function

[INTERNAL] Assign node IDs to the biological identifiers across a graph layer

[INTERNAL] This function takes two data frames of (biological) identifiers of nodes. Each data frame corresponds to the identifiers of the components contained in the single-layer network of a sample group. This function outputs the same data frames, with an added column (node_id) that contains node IDs which can later be used as name parameter for an iGraph graph. Node IDs begin with the defined prefix and an underscore. If a molecule is present in both groups, the node ID will be the same across the whole layer, allowing to easily combine the graphs of both groups in generate_differential_score_graph to calculate differential scores of identical nodes in both sample groups. The function is used by the high-level wrapper generate_individual_graphs to create annotations, which uniquely define nodes across the network layer.

create_unique_layer_node_ids(identifiersA, identifiersB, layer_name)

Arguments

• identifiersA, identifiersB: [data.frame] Containing the biological identifiers of each group of the same network layer.
• layer_name: [string] Name of layer that the node ids are created for

Returns

Returns an named list. Elements groupA and groupB contain the input data frames with an additional column node_id. both contains all unique node IDs assigned across the network layer.