googleVis (version 0.2.6)

gvisPieChart: Google Pie Chart with R

Description

The gvisPieChart function reads a data.frame and creates text output referring to the Google Visualisation API which can be included into a web page, or as a stand-alone page. The actual chart is rendered by the web browser using SVG or VML.

Usage

gvisPieChart(data, labelvar = "", numvar = "", options = list(), chartid)

Arguments

data

a data.frame to be displayed as a pie chart

labelvar

Name of the character column which contains the category labels for the slice labels.

numvar

a vector of column names of the numerical variables of the slice values.

options

list of configuration options for Google Pie Chart. The possible components are, taken from http://code.google.com/apis/visualization/documentation/gallery/piechart.html#Configuration_Options: [object Object],[object Object],[object

chartid

character. If missing (default) a random chart id will be generated based on chart type and tempfile

Value

• gvisPieChart returns list of class "gvis" and "list". An object of class "gvis" is a list containing at least the following components:
• type
  Google visualisation type, here 'PieChart'
• chartid
  character id of the chart object. Unique chart ids are required to place several charts on the same page.
• html
  a list with the building blocks for a page [object Object],[object Object],[object Object],[object Object]

Warning

Google Visualisation API: You cannot load both piechart and corechart packages at the same time on the same page.

References

Google Pie Chart API: http://code.google.com/apis/chart/interactive/docs/gallery/piechart.html

Follow the link for Google's data policy.

See Also

See also print.gvis, plot.gvis for printing and plotting methods

Examples

## Please note that by default the googleVis plot command
## will open a browser window and requires an internet
## connection to display the visualisation.

Pie1 <- gvisPieChart(CityPopularity)
plot(Pie1)