Hi all, Is there a way to create a multilayer network from a group of data.frames? This would make it very easy to import data to create multigraphs in graph-tool. This is possible for example in igrap library and for MuxViz in R( https://github.com/manlius/muxViz). In Muxviz, for example, one can create a multilayer network using three data.frames. I copy some of the explanation below from their documentation: ### Node list One df with following columns : - nodeID: [mandatory] numerical integer id to identify each node - nodeLabel: [optional] string specifying the label attribute - nodeX: [optional] float value specifying the Cartesian coordinate x for the layout - nodeY: [optional] float value specifying the Cartesian coordinate x for the layout - nodeLat: [optional] float value specifying the latitude for the geographic layout - nodeLong: [optional] float value specifying the longitude for the geographic layout ### Edges list One or more df with data on the edges. A typical edges list is expected to be a file with at most three columns, giving the list of edges from a node (first column) to other nodes (second column), possibly weighted by an integer or floating number (third column). For instance: 1 2 0.5 1 3 1.4 ... 18 124 0.1 ### input df Muxviz also uses a third data.frame that brings information on the list of layers to be included in a multiplex, the corresponding labels and the possible layout file to define node properties (e.g., ID, labels, geographic coordinates, etc). best wishes, Rafael H M Pereira