gvisLineChart: Google Line Chart with R \Sexpr{googleChartName <-...

In googleVis: R Interface to Google Charts

Google Line Chart with R \Sexpr{googleChartName <- "linechart"} \Sexpr{gvisChartName <- "gvisLineChart"}

Description

The gvisLineChart 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

gvisLineChart(data, xvar = "", yvar = "", options = list(), chartid)

Arguments

data	a data.frame to be displayed as a line chart
xvar	name of the character column which contains the category labels for the x-axes.
yvar	a vector of column names of the numerical variables to be plotted. Each column is displayed as a separate line.
options	list of configuration options, see \Sexpr[results=rd]{gsub("CHARTNAME", googleChartName, readLines(file.path(".", "inst", "mansections", "GoogleChartToolsURLConfigOptions.txt")))} \Sexpr[results=rd]{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

Value

\Sexpr[results=rd]{paste(gvisChartName)}

returns list of class \Sexpr[results=rd]{paste(readLines(file.path(".", "inst", "mansections", "gvisOutputStructure.txt")))}

Author(s)

Markus Gesmann [e-mail],

Diego de Castillo [e-mail]

References

Google Chart Tools API: \Sexpr[results=rd]{gsub("CHARTNAME", googleChartName, readLines(file.path(".", "inst", "mansections", "GoogleChartToolsURL.txt")))}

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.

df <- data.frame(country=c("US", "GB", "BR"), val1=c(1,3,4), val2=c(23,12,32))

## Line chart
Line1 <- gvisLineChart(df, xvar="country", yvar=c("val1", "val2"))
plot(Line1)


## Add a customised title and smoothed curve
Line2 <- gvisLineChart(df, xvar="country", yvar=c("val1", "val2"),
             options=list(title="Hello World",
                          titleTextStyle="{color:'red',fontName:'Courier',fontSize:16}",
                          curveType='function'))
plot(Line2)

## Not run: 
## Change y-axis to percentages
Line3 <- gvisLineChart(df, xvar="country", yvar=c("val1", "val2"),
                       options=list(vAxis="{format:'#,###%'}"))
plot(Line3)


## End(Not run)

## Create a chart with two y-axis:
Line4 <-  gvisLineChart(df, "country", c("val1","val2"),
                        options=list(series="[{targetAxisIndex: 0},
                                              {targetAxisIndex:1}]",
                          vAxes="[{title:'val1'}, {title:'val2'}]"
                          ))
plot(Line4)

## Line chart with edit button
Line5 <- gvisLineChart(df, xvar="country", yvar=c("val1", "val2"),
                       options=list(gvis.editor="Edit me!"))
plot(Line5)

## Customizing lines 
Dashed <-  gvisLineChart(df, xvar="country", yvar=c("val1","val2"),
             options=list(
             series="[{color:'green', targetAxisIndex: 0, 
                       lineWidth: 1, lineDashStyle: [2, 2, 20, 2, 20, 2]}, 
                      {color: 'blue',targetAxisIndex: 1, 
                       lineWidth: 2, lineDashStyle: [4, 1]}]",
                       vAxes="[{title:'val1'}, {title:'val2'}]"
                       ))
plot(Dashed)

googleVis documentation built on May 29, 2024, 9:24 a.m.