makeEventDiagram: Generating a graph based on an input vector of states

In garyfeng/pdata: Process Data Analysis and Reporting for Large Scale Educatoinal Assessment

Description

Generating a graph based on an input vector of states

Usage

makeEventDiagram(evt, nodeShapeBy = NA, graphName = "", ignoreRuns = F,
  excludeEdges = NA, excludeNodes = c(NA, "NA"), minimalEdgeCount = 0,
  shapes = c("rectangle", "oval", "diamond", "egg", "triangle",
  "parallelogram", "house", "pentagon", "hexagon", "septagon", "octagon",
  "doubleoctagon", "cds"), deleteIsolatedNodes = T)

Arguments

evt	A vector of events, which can be either numeric, char, or factor. The unique values of the vector will become the nodes (unless excluded). Edges will be draw from the current event to the next event (except those that are excluded).
nodeShapeBy	A vector of distinct values, of the same length as evt, such that event nodes with the same value of nodeShapeBy will have the same shape.
graphName	The Name of the graph. This string will be printed at the top of the output graph.
ignoreRuns	FALSE by default. If TRUE, run-length-encoding will be done on the evt vector, so that there are no self-referencial edges.
excludeEdges	A logical vector the same longth as the events. If True, the edge associated with corresponding event will not be drawn. NA by default.
minimalEdgeCount	The minimal number of transition occurances before an edge is drawn.
shapes	A character vector of graphviz node shapes. The list will be repeated if the number of nodes is larger than the length of the shapes vector.
deleteIsolatedNodes	Do not show isolated nodes (default = T)
excludedNodes	A vector of names of the nodes to be excluded.

Value

a DiagrammeR graph object

Examples

df <- data.frame(evt=c("this", "2", "hi", "that", "2", "3"), by=c(1,2, 1, 1, 2, 2))
makeEventDiagram(df$evt)
g<-makeEventDiagram(df$evt, nodeShapeBy=df$by); print(g)

garyfeng/pdata documentation built on May 16, 2019, 5:42 p.m.