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An example how to plot networks and customize their appearance from R using HiveR package
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| library("igraph") | |
| library("plyr") | |
| library("HiveR") | |
| library("RColorBrewer") | |
| ############################################################################################ | |
| rm(list = ls()) | |
| dataSet <- read.table("lesmis.txt", header = FALSE, sep = "\t") | |
| ############################################################################################ | |
| # Create a graph. Use simplify to ensure that there are no duplicated edges or self loops | |
| gD <- simplify(graph.data.frame(dataSet, directed=FALSE)) | |
| # Print number of nodes and edges | |
| # vcount(gD) | |
| # ecount(gD) | |
| # Calculate some node properties and node similarities that will be used to illustrate | |
| # different plotting abilities | |
| # Calculate degree for all nodes | |
| degAll <- degree(gD, v = V(gD), mode = "all") | |
| # Calculate betweenness for all nodes | |
| betAll <- betweenness(gD, v = V(gD), directed = FALSE) / (((vcount(gD) - 1) * (vcount(gD)-2)) / 2) | |
| betAll.norm <- (betAll - min(betAll))/(max(betAll) - min(betAll)) | |
| node.list <- data.frame(name = V(gD)$name, degree = degAll, betw = betAll.norm) | |
| # Calculate Dice similarities between all pairs of nodes | |
| dsAll <- similarity.dice(gD, vids = V(gD), mode = "all") | |
| # Calculate edge weight based on the node similarity | |
| F1 <- function(x) {data.frame(V4 = dsAll[which(V(gD)$name == as.character(x$V1)), which(V(gD)$name == as.character(x$V2))])} | |
| dataSet.ext <- ddply(dataSet, .variables=c("V1", "V2", "V3"), function(x) data.frame(F1(x))) | |
| rm(degAll, betAll, betAll.norm, F1) | |
| ############################################################################################ | |
| #Determine node/edge color based on the properties | |
| # Calculate node size | |
| # We'll interpolate node size based on the node betweenness centrality, using the "approx" function | |
| # And we will assign a node size for each node based on its betweenness centrality | |
| approxVals <- approx(c(0.5, 1.5), n = length(unique(node.list$bet))) | |
| nodes_size <- sapply(node.list$bet, function(x) approxVals$y[which(sort(unique(node.list$bet)) == x)]) | |
| node.list <- cbind(node.list, size = nodes_size) | |
| rm(approxVals, nodes_size) | |
| # Define node color | |
| # We'll interpolate node colors based on the node degree using the "colorRampPalette" function from the "grDevices" library | |
| library("grDevices") | |
| # This function returns a function corresponding to a collor palete of "bias" number of elements | |
| F2 <- colorRampPalette(c("#F5DEB3", "#FF0000"), bias = length(unique(node.list$degree)), space = "rgb", interpolate = "linear") | |
| # Now we'll create a color for each degree | |
| colCodes <- F2(length(unique(node.list$degree))) | |
| # And we will assign a color for each node based on its degree | |
| nodes_col <- sapply(node.list$degree, function(x) colCodes[which(sort(unique(node.list$degree)) == x)]) | |
| node.list <- cbind(node.list, color = nodes_col) | |
| rm(F2, colCodes, nodes_col) | |
| # Assign visual attributes to edges using the same approach as we did for nodes | |
| F2 <- colorRampPalette(c("#FFFF00", "#006400"), bias = length(unique(dataSet.ext$V4)), space = "rgb", interpolate = "linear") | |
| colCodes <- F2(length(unique(dataSet.ext$V4))) | |
| edges_col <- sapply(dataSet.ext$V4, function(x) colCodes[which(sort(unique(dataSet.ext$V4)) == x)]) | |
| dataSet.ext <- cbind(dataSet.ext, color = edges_col) | |
| rm(F2, colCodes, edges_col) | |
| ############################################################################################ | |
| # Assign nodes to axes | |
| # Randomly | |
| nodeAxis <- sample(3, nrow(node.list), replace = TRUE ) | |
| node.list <- cbind(node.list, axis = nodeAxis) | |
| rm(nodeAxis) | |
| ############################################################################################ | |
| #Create a hive plot | |
| source("mod.edge2HPD.R") | |
| hive1 <- mod.edge2HPD(edge_df = dataSet.ext[, 1:2], edge.weight = dataSet.ext[, 3], edge.color = dataSet.ext[, 5], node.color = node.list[,c("name", "color")], node.size = node.list[,c("name", "size")], node.radius = node.list[,c("name", "degree")], node.axis = node.list[,c("name", "axis")]) | |
| #sumHPD(hive1) | |
| hive2 <- mineHPD(hive1, option = "remove zero edge") | |
| plotHive(hive2, method = "abs", bkgnd = "white", axLab.pos = 1) | |
| ######################################## | |
| # Based on hierarchical cluestering | |
| d <- dist(dsAll) | |
| hc <- hclust(d) | |
| #plot(hc) | |
| nodeAxis <- cutree(hc, k = 6) | |
| node.list <- cbind(node.list, axisCl = nodeAxis) | |
| rm(nodeAxis) | |
| hive1 <- mod.edge2HPD(edge_df = dataSet.ext[, 1:2], edge.weight = dataSet.ext[, 3], edge.color = dataSet.ext[, 5], node.color = node.list[,c("name", "color")], node.size = node.list[,c("name", "size")], node.radius = node.list[,c("name", "degree")], node.axis = node.list[,c("name", "axisCl")]) | |
| #sumHPD(hive1) | |
| hive2 <- mineHPD(hive1, option = "remove zero edge") | |
| plotHive(hive2, method = "abs", bkgnd = "white", axLab.pos = 1) |
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| mod.edge2HPD <- function(edge_df = NULL, unique.rows = TRUE, axis.cols = NULL, type = "2D", desc = NULL, edge.weight = NULL, edge.color = NULL, node.color = NULL, node.size = NULL, node.radius = NULL, node.axis = NULL) | |
| { | |
| #edge.weight - a list corresponding to edge weights (same order as in edge_df) | |
| #edge.color - a lis corresponding to edge colors (same order as in edge_df) | |
| #node.color - a data frame consisting of two columns: column 1 - node labels, column 2 - node color | |
| #node.size - a data frame consisting of two columns: column 1 - node labels, column 2 - node size | |
| #node.radius - a data frame consisting of two columns: column 1 - node labels, column 2 - node radius | |
| #node.axis - a data frame consisting of two columns: column 1 - node labels, column 2 - node axis | |
| if (is.null(edge_df)){ | |
| stop("No edge data provided") | |
| } | |
| if (!is.data.frame(edge_df)){ | |
| stop("edge_df is not a data frame") | |
| } | |
| if (unique.rows) | |
| { | |
| nr.old <- nrow(edge_df) | |
| edge_df <- unique(edge_df) | |
| if (nr.old > nrow(edge_df)) | |
| cat("\n\t", nr.old - nrow(edge_df), "non-unique data-frame rows removed!\n\n") | |
| } | |
| # Get node labels | |
| lab1 <- as.character(unlist(edge_df[, 1])) | |
| lab2 <- as.character(unlist(edge_df[, 2])) | |
| # Get number of unique nodes | |
| nn <- length(unique(c(lab1, lab2))) | |
| # Define node ID | |
| id <- 1:nn | |
| # Define node label | |
| label <- unique(c(lab1, lab2)) | |
| # Create a data frame for node attributes | |
| node.attributes <- data.frame(id, label) | |
| #################################################### | |
| # Node size definition | |
| if (!is.null(node.size)) | |
| { | |
| if (is.numeric(node.size[, 2]) | is.integer(node.size[, 2])) | |
| { | |
| nSize <- c() | |
| for (i in 1:length(label)) | |
| { | |
| indx <- which(as.character(node.size[,1]) == label[i]) | |
| if (length(indx[1]) != 0) | |
| nSize = c(nSize, node.size[indx[1],2]) | |
| else | |
| { | |
| msg <- paste("No size data provided for the node ", nodes$id[n], ". Value 1 will be assigned to this node!", sep = "") | |
| warning(msg) | |
| nSize = c(nSize, 1) | |
| } | |
| } | |
| node.attributes <- cbind(node.attributes, size = nSize) | |
| rm(i, nSize, indx) | |
| }#is.numeric | |
| else{ | |
| stop("Node size is not numeric or integer.") | |
| } | |
| }#is.null | |
| if (is.null(node.size)) | |
| { | |
| warning("No data provided for the node size. All nodes will be assigned size 1!") | |
| node.attributes <- cbind(node.attributes, size = rep(1, nn)) | |
| } | |
| #################################################### | |
| # Node color definition | |
| if (!is.null(node.color)) | |
| { | |
| nCol <- c() | |
| for (i in 1:length(label)) | |
| { | |
| indx <- which(as.character(node.color[,1]) == label[i]) | |
| if (length(indx[1]) != 0) | |
| nCol = c(nCol, as.character(node.color[indx[1],2])) | |
| else | |
| { | |
| msg <- paste("No color data provided for the node ", nodes$id[n], ". Black color will be assigned to this node!", sep = "") | |
| warning(msg) | |
| nCol = c(nCol, "black") | |
| } | |
| } | |
| node.attributes <- cbind(node.attributes, color = nCol) | |
| rm(i, nCol, indx) | |
| }#is.null | |
| if (is.null(node.color)) | |
| { | |
| warning("No data provided for the node color. All nodes will be colored black!") | |
| node.attributes <- cbind(node.attributes, color = as.character(rep("black", nn))) | |
| } | |
| #################################################### | |
| # Node radius definition | |
| if (!is.null(node.radius)) | |
| { | |
| if (is.numeric(node.radius[, 2]) | is.integer(node.radius[, 2])) | |
| { | |
| nSize <- c() | |
| for (i in 1:length(label)) | |
| { | |
| indx <- which(as.character(node.radius[,1]) == label[i]) | |
| if (length(indx[1]) != 0) | |
| nSize = c(nSize, node.radius[indx[1],2]) | |
| else | |
| { | |
| msg <- paste("No raidus data provided for the node ", nodes$id[n], ". Random values will be assigned!", sep = "") | |
| warning(msg) | |
| nSize = c(nSize, sample(nn, 1)) | |
| } | |
| } | |
| node.attributes <- cbind(node.attributes, radius = nSize) | |
| rm(i, nSize, indx) | |
| }#is.numeric | |
| else{ | |
| stop("Node raidus is not integer.") | |
| } | |
| }#is.null | |
| if (is.null(node.radius)) | |
| { | |
| warning("No data provided for the node radius. All nodes will be assigned random radius values") | |
| node.attributes <- cbind(node.attributes, radius = sample(nn, nn)) | |
| } | |
| #################################################### | |
| # Node axis definition | |
| if (!is.null(node.axis)) | |
| { | |
| if (is.integer(node.axis[, 2])) | |
| { | |
| nSize <- c() | |
| for (i in 1:length(label)) | |
| { | |
| indx <- which(as.character(node.axis[,1]) == label[i]) | |
| if (length(indx[1]) != 0) | |
| nSize = c(nSize, node.axis[indx[1],2]) | |
| else | |
| { | |
| msg <- paste("No axis data provided for the node ", nodes$id[n], ". This node will be assigned to axis 1!", sep = "") | |
| warning(msg) | |
| nSize = c(nSize, 1) | |
| } | |
| } | |
| node.attributes <- cbind(node.attributes, axis = nSize) | |
| rm(i, nSize, indx) | |
| }#is.integer | |
| else{ | |
| stop("Node axis is not integer.") | |
| } | |
| }#is.null | |
| if (is.null(node.axis)) | |
| { | |
| warning("No data provided for the node axis. All nodes will be assigned to axis 1") | |
| node.attributes <- cbind(node.attributes, axis = rep(1, nn)) | |
| } | |
| ###################################################### | |
| # Create HPD object | |
| HPD <- list() | |
| # Define node attributes | |
| HPD$nodes$id <- as.integer(node.attributes$id) | |
| HPD$nodes$lab <- as.character(node.attributes$label) | |
| HPD$nodes$axis <- as.integer(node.attributes$axis) | |
| HPD$nodes$radius <- as.numeric(node.attributes$radius) | |
| HPD$nodes$size <- as.numeric(node.attributes$size) | |
| HPD$nodes$color <- as.character(node.attributes$color) | |
| #################################################### | |
| # Get number of edges | |
| ne <- nrow(edge_df) | |
| #################################################### | |
| # Edge weight definition | |
| if (!(is.null(edge.weight))) | |
| { | |
| if (length(edge.weight) != nrow(edge_df)) | |
| stop("Edge weights are not provided for all edges!") | |
| if (is.numeric(edge.weight) | is.integer(edge.weight)) | |
| edge_df <- cbind(edge_df, weight = edge.weight) | |
| else | |
| stop("Edge weight column is not numeric or integer.") | |
| } | |
| if (is.null(edge.weight)) | |
| { | |
| warning("No edge weight provided Setting default edge weight to 1") | |
| edge_df <- cbind(edge_df, weight = rep(1, ne)) | |
| } | |
| #################################################### | |
| # Edge color definition | |
| if (!(is.null(edge.color))) | |
| { | |
| if (length(edge.color) != nrow(edge_df)) | |
| stop("Edge colors are not provided for all edges!") | |
| else | |
| edge_df <- cbind(edge_df, color = as.character(edge.color)) | |
| } | |
| if (is.null(edge.color)) | |
| { | |
| warning("No edge color provided. Setting default edge color to gray") | |
| edge_df <- cbind(edge_df, color = rep("gray", ne)) | |
| } | |
| #################################################### | |
| # Set up edge list | |
| # Merge by default sorts things and changes the order of edges, so edge list has to stay paired | |
| edge.hlp <- merge(edge_df, node.attributes[, 1:2], by.x = 1, by.y = "label") | |
| edge <- merge(edge.hlp, node.attributes[1:2], by.x = 2, by.y = "label") | |
| HPD$edges$id1 <- as.integer(edge$id.x) | |
| HPD$edges$id2 <- as.integer(edge$id.y) | |
| HPD$edges$weight <- as.numeric(edge$weight) | |
| HPD$edges$color <- as.character(edge$color) | |
| HPD$nodes <- as.data.frame(HPD$nodes) | |
| HPD$edges <- as.data.frame(HPD$edges) | |
| # Add description | |
| if (is.null(desc)) { | |
| desc <- "No description provided" | |
| } | |
| HPD$desc <- desc | |
| # Define axis columns | |
| if (is.null(axis.cols)){ | |
| axis.cols <- brewer.pal(length(unique(HPD$nodes$axis)), "Set1") | |
| } | |
| HPD$axis.cols <- axis.cols | |
| HPD$nodes$axis <- as.integer(HPD$nodes$axis) | |
| HPD$nodes$size <- as.numeric(HPD$nodes$size) | |
| HPD$nodes$color <- as.character(HPD$nodes$color) | |
| HPD$nodes$lab <- as.character(HPD$nodes$lab) | |
| HPD$nodes$radius <- as.numeric(HPD$nodes$radius) | |
| HPD$nodes$id <- as.integer(HPD$nodes$id) | |
| HPD$edges$id1 <- as.integer(HPD$edges$id1) | |
| HPD$edges$id2 <- as.integer(HPD$edges$id2) | |
| HPD$edges$weight <- as.numeric(HPD$edges$weight) | |
| HPD$edges$color <- as.character(HPD$edges$color) | |
| HPD$type <- type | |
| class(HPD) <- "HivePlotData" | |
| # Check HPD object | |
| chkHPD(HPD) | |
| return (HPD) | |
| } |
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| mod.mineHPD <- function(HPD, option = "", radData = NULL) | |
| { | |
| edges <- HPD$edges | |
| nodes <- HPD$nodes | |
| nn <- length(nodes$id) | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| if (option == "axis <- source.man.sink") { | |
| # A change that allows this function to be used for undirected graphs | |
| # Now all nodes will be assigned to an axis | |
| done <- FALSE # a check to make sure all nodes get an axis | |
| for (n in 1:nn) { | |
| id1 <- which(n ==edges$id1) | |
| id2 <- which(n ==edges$id2) | |
| if ((length(id1) == 0) & (length(id2) > 0 )) { | |
| nodes$axis[n] <- 2 | |
| done <- TRUE | |
| next | |
| } # these are sinks, as they only receive an edge | |
| # note that set operations below drop duplicate values | |
| #Change 1 starts here | |
| if (length(id1) > 0) | |
| { | |
| if (length(id2) == 0) | |
| { | |
| nodes$axis[n] <- 1 | |
| done <- TRUE | |
| next | |
| } | |
| else | |
| { | |
| #Change 1 ends here | |
| common <- union(id1, id2) | |
| source <- setdiff(id1, common) | |
| if (length(source) == 1) { | |
| nodes$axis[n] <- 1 | |
| done <- TRUE | |
| next | |
| } # these are sources | |
| if (length(common) >= 1) { | |
| nodes$axis[n] <- 3 | |
| done <- TRUE | |
| next | |
| } # these are managers | |
| } | |
| } | |
| if (!done) { | |
| msg <- paste("node ", nodes$id[n], " was not assigned to an axis", sep = "") | |
| warning(msg) | |
| } # alert the user there was a problem | |
| } # end of loop inspecting nodes | |
| nodes$axis <- as.integer(nodes$axis) | |
| } ##### end of option == "axis <- source.man.sink | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| if (option == "rad <- random") { | |
| # This option assigns a random radius value to a node | |
| for (n in 1:nn) | |
| nodes$radius[n] <- sample(1:nn, 1) | |
| } ##### end of option == "rad <- random" | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| if (option == "rad <- userDefined") { | |
| # This option assigns a radius value to a node | |
| # based upon user specified values. | |
| if (is.null(radData)){ | |
| stop("No edge data provided") | |
| } | |
| if (length(intersect(as.character(radData[,1]), as.character(nodes$lab))) == 0){ | |
| stop("Provided data does not contain correct node labels") | |
| } | |
| for (n in 1:nn) | |
| { | |
| indexHlp <- which(as.character(radData[,1]) == nodes$lab[n]) | |
| if (length(indexHlp) != 0) | |
| nodes$radius[n] <- radData[indexHlp[1], 2] | |
| else | |
| { | |
| msg <- paste("No data provided for the node ", nodes$id[n], ". Value 1 will be assigned to this node!", sep = "") | |
| warning(msg) | |
| nodes$radius[n] <- 1 | |
| } | |
| } | |
| } ##### end of option == "rad <- userDefined" | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| if (option == "axis <- deg_one_two_more") | |
| { | |
| # This option assigns a node to an axis | |
| # based upon whether its degree is 1, 2, or greater than two | |
| # | |
| # degree 1 = axis 1, degree 2 = axis 2, degree >2 = axis3 | |
| done <- FALSE # a check to make sure all nodes get an axis | |
| for (n in 1:nn) | |
| { | |
| id1 <- which(n ==edges$id1) | |
| id2 <- which(n ==edges$id2) | |
| if ((length(id1) + length(id2)) == 1) | |
| { | |
| nodes$axis[n] <- 1 | |
| done <- TRUE | |
| next | |
| } | |
| if ((length(id1) + length(id2)) == 2) | |
| { | |
| nodes$axis[n] <- 2 | |
| done <- TRUE | |
| next | |
| } | |
| if ((length(id1) + length(id2)) > 2) | |
| { | |
| nodes$axis[n] <- 3 | |
| done <- TRUE | |
| next | |
| } | |
| if (!done) { | |
| msg <- paste("node ", nodes$id[n], " was not assigned to an axis", sep = "") | |
| warning(msg) | |
| } # alert the user there was a problem | |
| } # end of loop inspecting nodes | |
| nodes$axis <- as.integer(nodes$axis) | |
| } ##### end of option == "axis <- deg_1_2_more | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| if (option == "axis <- deg_five_ten_more") | |
| { | |
| # This option assigns a node to an axis | |
| # based upon whether its degree is <=5, 6-10, or greater than 10 | |
| # | |
| # degree <=5 = axis 1, degree between 6 and 10 = axis 2, degree >10 = axis32 | |
| done <- FALSE # a check to make sure all nodes get an axis | |
| for (n in 1:nn) | |
| { | |
| id1 <- which(n ==edges$id1) | |
| id2 <- which(n ==edges$id2) | |
| if ((length(id1) + length(id2)) <= 5) | |
| { | |
| nodes$axis[n] <- 1 | |
| done <- TRUE | |
| next | |
| } | |
| if (((length(id1) + length(id2)) > 5) & ((length(id1) + length(id2)) <= 10)) | |
| { | |
| nodes$axis[n] <- 2 | |
| done <- TRUE | |
| next | |
| } | |
| if ((length(id1) + length(id2)) > 10) | |
| { | |
| nodes$axis[n] <- 3 | |
| done <- TRUE | |
| next | |
| } | |
| if (!done) { | |
| msg <- paste("node ", nodes$id[n], " was not assigned to an axis", sep = "") | |
| warning(msg) | |
| } # alert the user there was a problem | |
| } # end of loop inspecting nodes | |
| nodes$axis <- as.integer(nodes$axis) | |
| } ##### end of option == "axis <- deg_five_ten_more" | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| if (option == "remove axis edge") { | |
| # This option removes edges which start and end on the same axis | |
| # It re-uses code from sumHPD | |
| # Create a list of edges to be drawn | |
| n1.lab <- n1.rad <- n2.lab <- n2.rad <- n1.ax <- n2.ax <- c() | |
| for (n in 1:(length(HPD$edges$id1))) { | |
| i1 <- which(HPD$edges$id1[n] == HPD$nodes$id) | |
| i2 <- which(HPD$edges$id2[n] == HPD$nodes$id) | |
| n1.lab <- c(n1.lab, HPD$nodes$lab[i1]) | |
| n2.lab <- c(n2.lab, HPD$nodes$lab[i2]) | |
| n1.rad <- c(n1.rad, HPD$nodes$radius[i1]) | |
| n2.rad <- c(n2.rad, HPD$nodes$radius[i2]) | |
| n1.ax <- c(n1.ax, HPD$nodes$axis[i1]) | |
| n2.ax <- c(n2.ax, HPD$nodes$axis[i2]) | |
| } | |
| fd <- data.frame( | |
| n1.id = HPD$edges$id1, | |
| n1.ax, | |
| n1.lab, | |
| n1.rad, | |
| n2.id = HPD$edges$id2, | |
| n2.ax, | |
| n2.lab, | |
| n2.rad, | |
| e.wt = HPD$edges$weight, | |
| e.col = HPD$edges$color) | |
| prob <- which(fd$n1.ax == fd$n2.ax) | |
| if (length(prob) == 0) cat("\n\t No edges were found that start and end on the same axis\n") | |
| if (length(prob) > 0) { | |
| edges <- edges[-prob,] | |
| cat("\n\t", length(prob), "edges that start and end on the same axis were removed\n") | |
| } | |
| } ##### end of option == "remove axis edge" | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| if (option == "axis <- split") { | |
| # This option splits all axes into 2 new axes | |
| # It can be used to address the "edge on the same axis" issue | |
| # This option may increase the number of nodes - a single node from the parent axis may appear on 2 "children" axes | |
| nodesNew <- nodes | |
| nodesOld <- nodes | |
| nAxes <- unique(nodes$axis) | |
| numAxes <- length(nAxes) | |
| #Renumerate axes | |
| for (i in numAxes:1) | |
| nodesOld[which(nodesOld$axis == nAxes[i]), "axis"] <- as.integer(2*nAxes[i] - 1) | |
| #Duplicate nodes | |
| #Renumerate axes | |
| for (i in numAxes:1) | |
| nodesNew[which(nodesNew$axis == nAxes[i]), "axis"] <- as.integer(2*nAxes[i]) | |
| #Re-numerate node ids | |
| nodesNew$id <- nodesNew$id + nn | |
| #Duplicated set of nodes with correct axis and node ids | |
| nodes <- rbind(nodesOld, nodesNew) | |
| rm(nodesOld, nodesNew) | |
| #Now create duplicated set of edges and re-numerate node ids for interactions | |
| edgesNew1 <- edges | |
| edgesNew1$id1 <- edgesNew1$id1 + nn | |
| edgesNew1$id2 <- edgesNew1$id2 + nn | |
| edgesNew2 <- edges | |
| edgesNew2$id1 <- edgesNew2$id1 + nn | |
| edgesNew3 <- edges | |
| edgesNew3$id2 <- edgesNew3$id2 + nn | |
| edges <- rbind(edges, edgesNew1, edgesNew2, edgesNew3) | |
| nodesAxis <- nodes[, c("id", "axis")] | |
| edgesHlp <- merge(edges, nodesAxis, by.x = "id1", by.y = "id") | |
| edges <- merge(edgesHlp, nodesAxis, by.x = "id2", by.y = "id") | |
| edgesOK <- edges[((edges$axis.x == 1) & (edges$axis.y == 2*numAxes)) | ((edges$axis.x == 2*numAxes) & (edges$axis.y == 1)), ] | |
| edgesHlp <- edgesOK | |
| if (numAxes > 1) | |
| for (i in 1:(numAxes - 1)) | |
| { | |
| edgesOK <- edges[((edges$axis.x == 2*i) & (edges$axis.y == (2*i + 1))) | ((edges$axis.x == (2*i + 1)) & (edges$axis.y == 2*i)), ] | |
| edgesHlp <- rbind(edgesHlp, edgesOK) | |
| } | |
| for (i in 1:numAxes) | |
| { | |
| edgesOK <- edges[((edges$axis.x == (2*i - 1)) & (edges$axis.y == 2*i)) | ((edges$axis.x == 2*i) & (edges$axis.y == (2*i - 1))), ] | |
| edgesHlp <- rbind(edgesHlp, edgesOK) | |
| } | |
| edges <- edgesHlp[, 1:4] | |
| unique.ids <- unique(c(edges$id1, edges$id2)) | |
| nodes <- nodes[nodes$id %in% unique.ids, ] | |
| # Check if the new number of axes is 2 times larger than old one | |
| # if not, we need to adjust axis numbers | |
| nodesAxis.new <- sort(unique(nodes$axis)) | |
| if(length(nodesAxis.new) != 2*numAxes) | |
| for (i in 1:length(nodesAxis.new)) | |
| if (i != nodesAxis.new[i]){ | |
| nodes[which(nodes$axis == nodesAxis.new[i]), "axis"] <- i | |
| } | |
| } ##### end of option == "axis <- split" | |
| ### ++++++++++++++++++++++++++++++++++++++++++++++++++++ ### | |
| # Final assembly and checking... | |
| HPD$edges <- edges | |
| HPD$nodes <- nodes | |
| chkHPD(HPD) | |
| HPD | |
| } |
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| library("igraph") | |
| library("plyr") | |
| library("HiveR") | |
| library("RColorBrewer") | |
| ############################################################################################ | |
| rm(list = ls()) | |
| dataSet <- read.table("lesmis.txt", header = FALSE, sep = "\t") | |
| ############################################################################################ | |
| # Create a graph. Use simplify to ensure that there are no duplicated edges or self loops | |
| gD <- simplify(graph.data.frame(dataSet, directed=FALSE)) | |
| # Print number of nodes and edges | |
| # vcount(gD) | |
| # ecount(gD) | |
| # Calculate some node properties and node similarities that will be used to illustrate | |
| # different plotting abilities | |
| # Calculate degree for all nodes | |
| degAll <- degree(gD, v = V(gD), mode = "all") | |
| # Calculate betweenness for all nodes | |
| betAll <- betweenness(gD, v = V(gD), directed = FALSE) / (((vcount(gD) - 1) * (vcount(gD)-2)) / 2) | |
| betAll.norm <- (betAll - min(betAll))/(max(betAll) - min(betAll)) | |
| gD <- set.vertex.attribute(gD, "degree", index = V(gD), value = degAll) | |
| gD <- set.vertex.attribute(gD, "betweenness", index = V(gD), value = betAll.norm) | |
| # Check the attributes | |
| # summary(gD) | |
| gD <- set.edge.attribute(gD, "weight", index = E(gD), value = 0) | |
| gD <- set.edge.attribute(gD, "similarity", index = E(gD), value = 0) | |
| # Calculate Dice similarities between all pairs of nodes | |
| dsAll <- similarity.dice(gD, vids = V(gD), mode = "all") | |
| # Calculate edge weight based on the node similarity | |
| F1 <- function(x) {data.frame(V4 = dsAll[which(V(gD)$name == as.character(x$V1)), which(V(gD)$name == as.character(x$V2))])} | |
| dataSet.ext <- ddply(dataSet, .variables=c("V1", "V2", "V3"), function(x) data.frame(F1(x))) | |
| for (i in 1:nrow(dataSet.ext)) | |
| { | |
| E(gD)[as.character(dataSet.ext$V1) %--% as.character(dataSet.ext$V2)]$weight <- as.numeric(dataSet.ext$V3) | |
| E(gD)[as.character(dataSet.ext$V1) %--% as.character(dataSet.ext$V2)]$similarity <- as.numeric(dataSet.ext$V4) | |
| } | |
| rm(degAll, betAll, betAll.norm, F1, dsAll, i) | |
| ############################################################################################ | |
| #Determine node/edge color based on the properties | |
| # Calculate node size | |
| # We'll interpolate node size based on the node betweenness centrality, using the "approx" function | |
| # And we will assign a node size for each node based on its betweenness centrality | |
| approxVals <- approx(c(0.5, 1.5), n = length(unique(V(gD)$betweenness))) | |
| nodes_size <- sapply(V(gD)$betweenness, function(x) approxVals$y[which(sort(unique(V(gD)$betweenness)) == x)]) | |
| rm(approxVals) | |
| # Define node color | |
| # We'll interpolate node colors based on the node degree using the "colorRampPalette" function from the "grDevices" library | |
| library("grDevices") | |
| # This function returns a function corresponding to a collor palete of "bias" number of elements | |
| F2 <- colorRampPalette(c("#F5DEB3", "#FF0000"), bias = length(unique(V(gD)$degree)), space = "rgb", interpolate = "linear") | |
| # Now we'll create a color for each degree | |
| colCodes <- F2(length(unique(V(gD)$degree))) | |
| # And we will assign a color for each node based on its degree | |
| nodes_col <- sapply(V(gD)$degree, function(x) colCodes[which(sort(unique(V(gD)$degree)) == x)]) | |
| rm(F2, colCodes) | |
| # Assign visual attributes to edges using the same approach as we did for nodes | |
| F2 <- colorRampPalette(c("#FFFF00", "#006400"), bias = length(unique(E(gD)$similarity)), space = "rgb", interpolate = "linear") | |
| colCodes <- F2(length(unique(E(gD)$similarity))) | |
| edges_col <- sapply(E(gD)$similarity, function(x) colCodes[which(sort(unique(E(gD)$similarity)) == x)]) | |
| rm(F2, colCodes) | |
| ############################################################################################ | |
| # Now the new (HiveR) part | |
| # Create a hive plot from the data frame | |
| hive1 <- edge2HPD(edge_df = dataSet.ext) | |
| #sumHPD(hive1) | |
| # Assign nodes to a radius based on their degree (number of edges they are touching) | |
| hive2 <- mineHPD(hive1, option = "rad <- tot.edge.count") | |
| # Assign nodes to axes based on their position in the edge list | |
| # (this function assumes direct graphs, so it considers the first column to be a source and second column to be a sink ) | |
| hive3 <- mineHPD(hive2, option = "axis <- source.man.sink") | |
| # Removing zero edges for better visualization | |
| hive4 <- mineHPD(hive3, option = "remove zero edge") | |
| # And finally, plotting our graph (Figure 1) | |
| plotHive(hive4, method = "abs", bkgnd = "white", axLabs = c("source", "hub", "sink"), axLab.pos = 1) | |
| ############################################################################################ | |
| # Let's do some node/edge customization | |
| # First do nodes | |
| nodes <- hive4$nodes | |
| # Change the node color and size based on node degree and betweenness values | |
| for (i in 1:nrow(nodes)) | |
| { | |
| nodes$color[i] <- nodes_col[which(nodes$lab[i] == V(gD)$name)] | |
| nodes$size[i] <- nodes_size[which(nodes$lab[i] == V(gD)$name)] | |
| } | |
| # Reassign these nodes to the hive(4) object | |
| hive4$nodes <- nodes | |
| # And plot it (Figure 2) | |
| plotHive(hive4, method = "abs", bkgnd = "white", axLab.pos = 1) | |
| # Now do the edges | |
| edges <- hive4$edges | |
| # Change the edge color based on Dice similarity | |
| for (i in 1:nrow(edges)) | |
| { | |
| index1 <- which(nodes$id == edges$id1[i]) | |
| index2 <- which(nodes$id == edges$id2[i]) | |
| edges$color[i] <- edges_col[which(E(gD)[as.character(nodes$lab[index1]) %--% as.character(nodes$lab[index2])] == E(gD))] | |
| } | |
| # Reassign these edges to the hive(4) object | |
| hive4$edges <- edges | |
| # And plot it (Figure 3) | |
| plotHive(hive4, method = "abs", bkgnd = "white", axLabs = c("source", "hub", "sink"), axLab.pos = 1) | |
| # Some edges are too thick, so we will reduce the edge weight (thickness) by 25% | |
| hive4$edges$weight <- hive4$edges$weight/4 | |
| # And plot it (Figure 5) | |
| plotHive(hive4, method = "abs", bkgnd = "white", axLabs = c("source", "hub", "sink"), axLab.pos = 1) | |
| ############################################### | |
| # Now the same using adj2HPD() instead of edge2HPD() | |
| # First, we'll create an adjacency matrix from our graph (gD) | |
| gAdj <- get.adjacency(gD, type = "upper", edges = FALSE, names = TRUE, sparse = FALSE) | |
| # Then we'll create the hive object for it | |
| hive1 <- adj2HPD(gAdj, type = "2D") | |
| # Assign nodes to a radius based on their degree (number of edges they are touching) | |
| hive2 <- mineHPD(hive1, option = "rad <- tot.edge.count") | |
| # Assign nodes to axes based on their position in the edge list | |
| hive3 <- mod.mineHPD(hive2, option = "axis <- source.man.sink") | |
| # In some cases (for undirected graphs), some nodes will not be assigned to any axes | |
| # In those cases, use the function from "mod.mineHPD.R" | |
| #source("mod.mineHPD.R") | |
| #hive3 <- mod.mineHPD(hive2, option = "axis <- source.man.sink") | |
| # Removing zero edges for better visualization | |
| hive4 <- mineHPD(hive3, option = "remove zero edge") | |
| # Node/edge customization is the same as above | |
| ################################################# | |
| # Now lets expand the available options and add some new function(alitie)s | |
| # Available in: "mod.mineHPD.R" | |
| source("mod.mineHPD.R") | |
| # Assign nodes to a radius based on the user specified values (in our case betweenness centrality) | |
| hive2 <- mod.mineHPD(hive1, option = "rad <- userDefined", radData = data.frame(nds = V(gD)$name, bc = V(gD)$betweenness)) | |
| # Assign nodes to a radius randomly | |
| hive2 <- mod.mineHPD(hive1, option = "rad <- random") | |
| # Assign nodes to axes based on their degree | |
| # Low degrees (1, 2, >2) | |
| hive3 <- mod.mineHPD(hive2, option = "axis <- deg_one_two_more") | |
| # Higer degrees (<=5, 6-10, >10) | |
| hive3 <- mod.mineHPD(hive2, option = "axis <- deg_five_ten_more") | |
| # Split axes - this function splits each of the 3 axes into 2 new axes (thus, resulting in 6 axes) | |
| # and removes edge on the same axis (but it introduces new (duplicated) nodes) | |
| hive4 <- mod.mineHPD(hive3, option = "axis <- split") | |
| ################################################# |
To add node labels (when plotting nodes), use anNodes option in the plotHive function. However, this requires node labeling information to be included in the separate file. Here is the info about this option (http://www.inside-r.org/packages/cran/hiver/docs/plotHive):
anNodes: (Applies to plotHive only) The path to a csv file containing information for labeling nodes. If present, a line segment will be drawn from the node to the specified text. The text is positioned near the end of the line segment. The columns in the csv file must be named as follows (description and use in parentheses): node.lab (node label from HPD$nodes$lab), node.text (the text to be drawn on the plot), angle (polar coordinates: angle at which to draw the segment), radius (polar coordinates: radius at which to draw the text), offset (additional distance along the radius vector to offset text), hjust, vjust (horizontal and vertical justification; nominally in [0...1] but fractional and negative values also work). The first two values will be treated as type character, the others as numeric.
When I run your code exampleForModEdge2HPD_HiveR.R, I got the following error:
hive2 <- mineHPD(hive1, option = "remove zero edge")
No edges were found that start and end on the same node
Error in data.frame(n1.id = HPD$edges$id1, n1.ax, n1.lab = as.character(n1.lab), :
arguments imply differing number of rows: 0, 77
Do you have any ideas why does this happen?
Thanks
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How do i add lables to the nodes ?