gvisPieChart() R function from [googleVis]

Google Pie Chart with R googleChartName <- "piechart"

gvisChartName <- "gvisPieChart"

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.


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 Charts, see:

gsub("CHARTNAME", googleChartName, readLines(file.path(".", "inst","mansections", "GoogleChartToolsURLConfigOptions.txt")))

paste(readLines(file.path(".", "inst", "mansections","gvisOptions.txt")))
chartid: character. If missing (default) a random chart id will be generated based on chart type and tempfile

Returns

paste(gvisChartName) returns list of class

paste(readLines(file.path(".", "inst", "mansections","gvisOutputStructure.txt")))

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)

## Doughnut chart - a pie with a hole
Pie2 <- gvisPieChart(CityPopularity, options=list(
                    slices="{4: {offset: 0.2}, 0: {offset: 0.3}}",
                    title='City popularity',
                    legend='none',
                    pieSliceText='label',
                    pieHole=0.5))
plot(Pie2)