install.packages('LANDD')graph.kd:
graph.kd(relate_matrix, graph, smoothing.normalize=c('one'))
graph.kd(relate_matrix, graph, smoothing.normalize=c('squareM'))
graph.kd(relate_matrix, graph, smoothing.normalize=c('none'))
visualize.community()is used to create a graph to display the layout of genes X, X's k-step neighborhood, W and their corresponding community.