gantt.chart {plotrix}R Documentation

Display a Gantt chart

Description

Displays a Gantt chart with priority coloring

Usage

 gantt.chart(x=NULL,format="%Y/%m/%d",xlim=NULL,taskcolors=NULL,
  vgridpos=NULL,vgridlab=NULL,half.height=0.25,hgrid=FALSE,main="",ylab="")

Arguments

x a list of task labels, start/end times and task priorities as returned by get.gantt.info. If this is not present, get.gantt.info will be called.
format the format to be used in entering dates/times (see strptime).
xlim the horizontal limits of the plot.
taskcolors a vector of colors used to illustrate task priority.
vgridpos optional positions of the vertical grid lines
vgridlab optional labels for the vertical grid lines
half.height the proportion of the spacing between task bars that will be filled by the bar on each side - 0.5 will leave no space
hgrid logical - whether to display grid lines between the bars
main the title of the plot - note that this is actually displayed using mtext.
ylab vertical axis label - usually suppressed.

Value

The list used to create the chart. This can be saved and reused rather than manually entering the information each time the chart is displayed.

Author(s)

Jim Lemon (original by Scott Waichler - features by Ulrike Grömping)

See Also

get.gantt.info

Examples

 Ymd.format<-"%Y/%m/%d"
 gantt.info<-list(labels=
  c("First task","Second task","Third task","Fourth task","Fifth task"),
  starts=
  as.POSIXct(strptime(
  c("2004/01/01","2004/02/02","2004/03/03","2004/05/05","2004/09/09"),
  format=Ymd.format)),
  ends=
  as.POSIXct(strptime(
  c("2004/03/03","2004/05/05","2004/05/05","2004/08/08","2004/12/12"),
  format=Ymd.format)),
  priorities=c(1,2,3,4,5))
 vgridpos<-as.POSIXct(strptime(c("2004/01/01","2004/02/01","2004/03/01",
  "2004/04/01","2004/05/01","2004/06/01","2004/07/01","2004/08/01",
  "2004/09/01","2004/10/01","2004/11/01","2004/12/01"),format=Ymd.format))
 vgridlab<-
  c("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec")
 gantt.chart(gantt.info,main="Calendar date Gantt chart (2004)",
  vgridpos=vgridpos,vgridlab=vgridlab,hgrid=TRUE)

[Package plotrix version 2.0.2 Index]