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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/gvisAnnotationChart.R
\name{gvisAnnotationChart}
\alias{gvisAnnotationChart}
\title{Google Annotation Chart with R
\Sexpr{googleChartName <- "annotationchart"}
\Sexpr{gvisChartName <- "gvisAnnotationChart"}}
\usage{
gvisAnnotationChart(data, datevar = "", numvar = "", idvar = "",
titlevar = "", annotationvar = "", date.format = "\%Y/\%m/\%d",
options = list(), chartid)
}
\arguments{
\item{data}{a \code{data.frame}. The data has to have at least two columns,
one with date information (\code{datevar}) and one numerical variable.}
\item{datevar}{column name of \code{data} which shows the date dimension.
The information has to be of class \code{\link{Date}} or \code{POSIX*} time
series.}
\item{numvar}{column name of \code{data} which shows the values to be
displayed against \code{datevar}. The information has to be
\code{\link{numeric}}.}
\item{idvar}{column name of \code{data} which identifies different groups of
the data. The information has to be of class \code{\link{character}} or
\code{\link{factor}}.}
\item{titlevar}{column name of \code{data} which shows the title of the
annotations. The information has to be of class \code{\link{character}} or
\code{\link{factor}}. Missing information can be set to \code{NA}. See
section 'Details' for more details.}
\item{annotationvar}{column name of \code{data} which shows the annotation
text. The information has to be of class \code{\link{character}} or
\code{\link{factor}}. Missing information can be set to \code{NA}. See
section 'Details' for more details.}
\item{date.format}{if \code{datevar} is of class \code{\link{Date}} then
this argument specifies how the dates are reformatted to be used by
JavaScript.}
\item{options}{list of configuration options, see:
% START DYNAMIC CONTENT
\Sexpr[results=rd]{gsub("CHARTNAME",
googleChartName,
readLines(file.path(".", "inst", "mansections",
"GoogleChartToolsURLConfigOptions.txt")))}
\Sexpr[results=rd]{paste(readLines(file.path(".", "inst",
"mansections", "gvisOptions.txt")))}}
\item{chartid}{character. If missing (default) a random chart id will be
generated based on chart type and \code{\link{tempfile}}.}
}
\value{
\Sexpr[results=rd]{paste(gvisChartName)} returns list
of \code{\link{class}}
\Sexpr[results=rd]{paste(readLines(file.path(".", "inst",
"mansections", "gvisOutputStructure.txt")))}
}
\description{
gvisAnnotationChart charts are interactive time series line charts that support
annotations. Unlike the gvisAnnotatedTimeLine, which uses Flash,
annotation charts are SVG/VML and should be preferred whenever possible.
}
\examples{
## Please note that by default the googleVis plot command
## will open a browser window and requires Internet
## connection to display the visualisation.
data(Stock)
Stock
A1 <- gvisAnnotationChart(Stock, datevar="Date",
numvar="Value", idvar="Device",
titlevar="Title", annotationvar="Annotation",
options=list(displayAnnotations=TRUE,
legendPosition='newRow',
width=600, height=350)
)
plot(A1)
## Two Y-axis
A2 <- gvisAnnotationChart(Stock, datevar="Date",
numvar="Value", idvar="Device",
titlevar="Title", annotationvar="Annotation",
options=list(displayAnnotations=TRUE,
width=600, height=350, scaleColumns='[0,1]',
scaleType='allmaximized')
)
plot(A2)
## Zoom into the time window, no Y-axis ticks
A3 <- gvisAnnotationChart(Stock, datevar="Date",
numvar="Value", idvar="Device",
titlevar="Title", annotationvar="Annotation",
options=list(
width=600, height=350,
zoomStartTime=as.Date("2008-01-04"),
zoomEndTime=as.Date("2008-01-05"))
)
plot(A3)
## Colouring the area below the lines to create an area chart
A4 <- gvisAnnotationChart(Stock, datevar="Date",
numvar="Value", idvar="Device",
titlevar="Title", annotationvar="Annotation",
options=list(
width=600, height=350,
fill=10, displayExactValues=TRUE,
colors="['#0000ff','#00ff00']")
)
plot(A4)
## Data with POSIXct datetime variable
A5 <- gvisAnnotationChart(Andrew, datevar="Date/Time UTC",
numvar="Pressure_mb",
options=list(scaleType='maximized')
)
plot(A5)
\dontrun{
## Plot Apple's monthly stock prices since 1984
## Get current date
d <- Sys.time()
current.year <- format(d, "\%Y")
current.month <- format(d, "\%m")
current.day <- format(d, "\%d")
## Yahoo finance sets January to 00 hence:
month <- as.numeric(current.month) - 1
month <- ifelse(month < 10, paste("0",month, sep=""), m)
## Get weekly stock prices from Apple Inc.
tckr <- 'AAPL'
yahoo <- 'https://ichart.finance.yahoo.com/table.csv'
fn <- sprintf('\%s?s=\%s&a=08&b=7&c=1984&d=\%s&e=\%s&f=\%s&g=w&ignore=.csv',
yahoo, tckr, month, current.day, current.year)
## Get data from Yahoo! Finance
data <- read.csv(fn, colClasses=c("Date", rep("numeric",6)))
AAPL <- reshape(data[,c("Date", "Close", "Volume")], idvar="Date",
times=c("Close", "Volume"),
timevar="Type",
varying=list(c("Close", "Volume")),
v.names="Value",
direction="long")
## Calculate previous two years for zoom start time
lyd <- as.POSIXlt(as.Date(d))
lyd$year <- lyd$year-2
lyd <- as.Date(lyd)
aapl <- gvisAnnotationChart(AAPL, datevar="Date",
numvar="Value", idvar="Type",
options=list(
colors="['blue', 'lightblue']",
zoomStartTime=lyd,
zoomEndTime=as.Date(d),
legendPosition='newRow',
width=600, height=400, scaleColumns='[0,1]',
scaleType='allmaximized')
)
plot(aapl)
}
}
\references{
Google Chart Tools API:
\Sexpr[results=rd]{gsub("CHARTNAME",
googleChartName,
readLines(file.path(".", "inst", "mansections",
"GoogleChartToolsURL.txt")))}
% END DYNAMIC CONTENT
}
\seealso{
See also \code{\link{print.gvis}}, \code{\link{plot.gvis}} for printing and
plotting methods. Further see \code{\link{reshape}} for reshaping data, e.g.
from a wide format into a long format.
}
\author{
Markus Gesmann \email{markus.gesmann@gmail.com},
Diego de Castillo \email{decastillo@gmail.com}
}
\keyword{iplot}
|
