The Edge Length Plugin is a simple plugin that adds a new attribute, length to each edge. This attribute is the actual length of the edge measured as the Euclidean distance between the source node and the target node. This can be used to determine the accuracy of edge weighted layout algorithms and estimate the "edge frustration", where edge frustration is defined as the actual layout and a perfect layout. A perfect layout is defined as one in which all of the edge lengths are proportional to their weights, which is only possible in the general case in n dimensions, where n is the number of nodes - 1.
