This is a force-directed graph depiction of a transmission network (the RTS-96). The red line is assumed to be overheated. The purpose of the visualization is to indicate which generators would be most effective at decreasing the temperature of the overheated line.
Large circles represent nodes, and are colored according to injection shift factors. A bright blue node, for example, has a large negative shift factor with respect to the overheated line.
Small circles represent generators, and are colored according to the output of a fast temporal scanning algorithm. A bright red generator, for example, communicates that the scanning algorithm recommends a significant positive change in that generator's output in order to relieve the overheated line.
One fun little trick at work here: nodes with large shift factors are pushed upward by the force layout algorithm (see the
tick
function inindex.html
). If you don't see the red line rising to the top, try refreshing.