% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/plotly.R
\name{plot_ly}
\alias{plot_ly}
\title{Initiate a plotly visualization}
\usage{
plot_ly(
  data = data.frame(),
  ...,
  type = NULL,
  name,
  color,
  colors = NULL,
  alpha = NULL,
  stroke,
  strokes = NULL,
  alpha_stroke = 1,
  size,
  sizes = c(10, 100),
  span,
  spans = c(1, 20),
  symbol,
  symbols = NULL,
  linetype,
  linetypes = NULL,
  split,
  frame,
  width = NULL,
  height = NULL,
  source = "A"
)
}
\arguments{
\item{data}{A data frame (optional) or \link[crosstalk:SharedData]{crosstalk::SharedData} object.}

\item{...}{Arguments (i.e., attributes) passed along to the trace \code{type}.
See \code{\link[=schema]{schema()}} for a list of acceptable attributes for a given trace \code{type}
(by going to \code{traces} -> \code{type} -> \code{attributes}). Note that attributes
provided at this level may override other arguments
(e.g. \code{plot_ly(x = 1:10, y = 1:10, color = I("red"), marker = list(color = "blue"))}).}

\item{type}{A character string specifying the trace type (e.g. \code{"scatter"}, \code{"bar"}, \code{"box"}, etc).
If specified, it \emph{always} creates a trace, otherwise}

\item{name}{Values mapped to the trace's name attribute. Since a trace can
only have one name, this argument acts very much like \code{split} in that it
creates one trace for every unique value.}

\item{color}{Values mapped to relevant 'fill-color' attribute(s)
(e.g. \href{https://plotly.com/r/reference/#scatter-fillcolor}{fillcolor},
\href{https://plotly.com/r/reference/#scatter-marker-color}{marker.color},
\href{https://plotly.com/r/reference/#scatter-textfont-color}{textfont.color}, etc.).
The mapping from data values to color codes may be controlled using
\code{colors} and \code{alpha}, or avoided altogether via \code{\link[=I]{I()}} (e.g., \code{color = I("red")}).
Any color understood by \code{\link[grDevices:col2rgb]{grDevices::col2rgb()}} may be used in this way.}

\item{colors}{Either a colorbrewer2.org palette name (e.g. "YlOrRd" or "Blues"),
or a vector of colors to interpolate in hexadecimal "#RRGGBB" format,
or a color interpolation function like \code{colorRamp()}.}

\item{alpha}{A number between 0 and 1 specifying the alpha channel applied to \code{color}.
Defaults to 0.5 when mapping to \href{https://plotly.com/r/reference/#scatter-fillcolor}{fillcolor} and 1 otherwise.}

\item{stroke}{Similar to \code{color}, but values are mapped to relevant 'stroke-color' attribute(s)
(e.g., \href{https://plotly.com/r/reference/#scatter-marker-line-color}{marker.line.color}
and \href{https://plotly.com/r/reference/#scatter-line-color}{line.color}
for filled polygons). If not specified, \code{stroke} inherits from \code{color}.}

\item{strokes}{Similar to \code{colors}, but controls the \code{stroke} mapping.}

\item{alpha_stroke}{Similar to \code{alpha}, but applied to \code{stroke}.}

\item{size}{(Numeric) values mapped to relevant 'fill-size' attribute(s)
(e.g., \href{https://plotly.com/r/reference/#scatter-marker-size}{marker.size},
\href{https://plotly.com/r/reference/#scatter-textfont-size}{textfont.size},
and \href{https://plotly.com/r/reference/#scatter-error_x-width}{error_x.width}).
The mapping from data values to symbols may be controlled using
\code{sizes}, or avoided altogether via \code{\link[=I]{I()}} (e.g., \code{size = I(30)}).}

\item{sizes}{A numeric vector of length 2 used to scale \code{size} to pixels.}

\item{span}{(Numeric) values mapped to relevant 'stroke-size' attribute(s)
(e.g.,
\href{https://plotly.com/r/reference/#scatter-marker-line-width}{marker.line.width},
\href{https://plotly.com/r/reference/#scatter-line-width}{line.width} for filled polygons,
and \href{https://plotly.com/r/reference/#scatter-error_x-thickness}{error_x.thickness})
The mapping from data values to symbols may be controlled using
\code{spans}, or avoided altogether via \code{\link[=I]{I()}} (e.g., \code{span = I(30)}).}

\item{spans}{A numeric vector of length 2 used to scale \code{span} to pixels.}

\item{symbol}{(Discrete) values mapped to \href{https://plotly.com/r/reference/#scatter-marker-symbol}{marker.symbol}.
The mapping from data values to symbols may be controlled using
\code{symbols}, or avoided altogether via \code{\link[=I]{I()}} (e.g., \code{symbol = I("pentagon")}).
Any \link{pch} value or \href{https://plotly.com/r/reference/#scatter-marker-symbol}{symbol name} may be used in this way.}

\item{symbols}{A character vector of \link{pch} values or \href{https://plotly.com/r/reference/#scatter-marker-symbol}{symbol names}.}

\item{linetype}{(Discrete) values mapped to \href{https://plotly.com/r/reference/#scatter-line-dash}{line.dash}.
The mapping from data values to symbols may be controlled using
\code{linetypes}, or avoided altogether via \code{\link[=I]{I()}} (e.g., \code{linetype = I("dash")}).
Any \code{lty} (see \link{par}) value or \href{https://plotly.com/r/reference/#scatter-line-dash}{dash name} may be used in this way.}

\item{linetypes}{A character vector of \code{lty} values or \href{https://plotly.com/r/reference/#scatter-line-dash}{dash names}}

\item{split}{(Discrete) values used to create multiple traces (one trace per value).}

\item{frame}{(Discrete) values used to create animation frames.}

\item{width}{Width in pixels (optional, defaults to automatic sizing).}

\item{height}{Height in pixels (optional, defaults to automatic sizing).}

\item{source}{a character string of length 1. Match the value of this string
with the source argument in \code{\link[=event_data]{event_data()}} to retrieve the
event data corresponding to a specific plot (shiny apps can have multiple plots).}
}
\description{
This function maps R objects to \href{https://plotly.com/javascript/}{plotly.js},
an (MIT licensed) web-based interactive charting library. It provides
abstractions for doing common things (e.g. mapping data values to
fill colors (via \code{color}) or creating \link{animation}s (via \code{frame})) and sets
some different defaults to make the interface feel more 'R-like'
(i.e., closer to \code{\link[=plot]{plot()}} and \code{\link[ggplot2:qplot]{ggplot2::qplot()}}).
}
\details{
Unless \code{type} is specified, this function just initiates a plotly
object with 'global' attributes that are passed onto downstream uses of
\code{\link[=add_trace]{add_trace()}} (or similar). A \link{formula} must always be used when
referencing column name(s) in \code{data} (e.g. \code{plot_ly(mtcars, x = ~wt)}).
Formulas are optional when supplying values directly, but they do
help inform default axis/scale titles
(e.g., \code{plot_ly(x = mtcars$wt)} vs \code{plot_ly(x = ~mtcars$wt)})
}
\examples{
\dontrun{

# plot_ly() tries to create a sensible plot based on the information you 
# give it. If you don't provide a trace type, plot_ly() will infer one.
plot_ly(economics, x = ~pop)
plot_ly(economics, x = ~date, y = ~pop)
# plot_ly() doesn't require data frame(s), which allows one to take 
# advantage of trace type(s) designed specifically for numeric matrices
plot_ly(z = ~volcano)
plot_ly(z = ~volcano, type = "surface")

# plotly has a functional interface: every plotly function takes a plotly
# object as it's first input argument and returns a modified plotly object
add_lines(plot_ly(economics, x = ~date, y = ~unemploy/pop))

# To make code more readable, plotly imports the pipe operator from magrittr
economics \%>\% plot_ly(x = ~date, y = ~unemploy/pop) \%>\% add_lines()

# Attributes defined via plot_ly() set 'global' attributes that 
# are carried onto subsequent traces, but those may be over-written
plot_ly(economics, x = ~date, color = I("black")) \%>\%
 add_lines(y = ~uempmed) \%>\%
 add_lines(y = ~psavert, color = I("red"))

# Attributes are documented in the figure reference -> https://plotly.com/r/reference
# You might notice plot_ly() has named arguments that aren't in this figure
# reference. These arguments make it easier to map abstract data values to
# visual attributes.
p <- plot_ly(palmerpenguins::penguins, x = ~bill_length_mm, y = ~body_mass_g)
add_markers(p, color = ~bill_depth_mm, size = ~bill_depth_mm)
add_markers(p, color = ~species)
add_markers(p, color = ~species, colors = "Set1")
add_markers(p, symbol = ~species)
add_paths(p, linetype = ~species)

}

}
\references{
\url{https://plotly-r.com/overview.html}
}
\seealso{
\itemize{
\item For initializing a plotly-geo object: \code{\link[=plot_geo]{plot_geo()}}
\item For initializing a plotly-mapbox object: \code{\link[=plot_mapbox]{plot_mapbox()}}
\item For translating a ggplot2 object to a plotly object: \code{\link[=ggplotly]{ggplotly()}}
\item For modifying any plotly object: \code{\link[=layout]{layout()}}, \code{\link[=add_trace]{add_trace()}}, \code{\link[=style]{style()}}
\item For linked brushing: \code{\link[=highlight]{highlight()}}
\item For arranging multiple plots: \code{\link[=subplot]{subplot()}}, \code{\link[crosstalk:bscols]{crosstalk::bscols()}}
\item For inspecting plotly objects: \code{\link[=plotly_json]{plotly_json()}}
\item For quick, accurate, and searchable plotly.js reference: \code{\link[=schema]{schema()}}
}
}
\author{
Carson Sievert
}
