scatterplotly.R
In royr2/plotlyvis: Create visually appealing charts using Plotly's R-API (plotly package) with an easy to use interface
#' @title scatterplotly
#'
#' @description
#' Create scatterplots using \href{https://plot.ly/r}{plotly's R API}.
#' Type \code{scatterplotly()} for visual help.
#'
#' @details
#' Internally, \code{plot_ly()} is used to generate all plots. All of the above arguments are
#' mapped to specific arguments to \code{plot_ly()}. The function assigns default values to
#' many \code{plot_ly()} arguments like marker-size, marker-opacity etc. to allow for
#' an easier interface.
#'
#' Type \code{plotlyvis::scatterplotly} to see the source code. Alternatively you can press F2
#' if using R-Studio.
#'
#' Currently, four color themes are built in: BLUE, YELLOW, LIGHTGRAY and DARKGRAY.
#'
#' @note
#' The \emph{title}, \emph{subtitle} and \emph{description} are added as annotations.
#' By default the \code{xref} and \code{yref} arguments are set to \emph{paper}.
#' See \href{https://plot.ly/r/reference/#layout-annotationsplot}{plotly - annotations}
#' for more details.
#'
#' @author Riddhiman Roy
#'
#' @seealso
#' \code{\link[plotly]{plot_ly}}
#' \code{\link[plotly]{plotly_build}}
#'
#' @param x A vector of x-coordinates
#' @param y A vector of y-coordinates
#' @param xlab x-axis label (optional)
#' @param ylab y-axis label (optional)
#' @param theme color theme (see details below)
#' @param groupcolor a vector specifying group level color mapping
#' @param groupsize a vector specifying group level size mapping
#' @param groupsymbol a vector specifying group level marker-type mapping
#' @param title Chart title
#' @param subtitle Chart subtitle (optional)
#' @param title.size Chart title size (default: 30)
#' @param title.fontface Chart title (and subtitle) font family(default: Times New Roman)
#' @param description Character vector to specify additional description (optional)
#' @param desc.x Description annotation's x position (default: 0.7)
#' @param desc.y Description annotation's y position (default: 0.2)
#' @param desc.size Description annotation's font size (default: 12)
#' @param desc.fontface Description annotation's font family (default: arial)
#' @param markersize Point size (in px) (default: 5)
#' @param markeropacity Point alpha (0 1) (default: 1)
#' @param markertype Point style (default: circle)
#' @param markerlinewidth Width of line around point (default: 1)
#' @param markerlinecolor Color of line around point (default: Black)
#' @param width Canvas width (default: 800)
#' @param height Canvas height (default: 600)
#' @param xaxis.range xaxis limits (a numeric vector of size two specifying lower and upper limits)
#' @param yaxis.range yaxis limits (a numeric vector of size two specifying lower and upper limits)
#' @param ... Other arguments that can be passed to plot_ly()
#'
#' @importFrom stats rnorm
#' @importFrom magrittr %>%
#'
#' @return
#' Returns a plotly built object. Use $ for further manipulations and edits.
#'
#' @examples
#' library(plotlyvis)
#'
#' # Simple scatter plot
#' scatterplotly(x = rnorm(1000), y = rnorm(1000), title = "Simple scatter plot")
#'
#' # Group level mappings
#' n = 500
#' x = seq(-1, 1, length.out = n)
#' y = round(2 * x^2 + rnorm(n, sd = 0.25),2)
#' size = c(1:250, 250:1)
#' color = sample(LETTERS[1:4], size = n, replace = TRUE)
#' symbol = sample(letters[1:3], size = n, replace = TRUE)
#' scatterplotly(x = x, y = y,
#' groupcolor = color,
#' groupsize = size,
#' groupsymbol = symbol,
#' title = "Advanced scatterplot",
#' subtitle = "Scatterplot with group level color, size and symbol mappings")
#'
#' #Theme
#' scatterplotly(x = rnorm(1000), y = rnorm(1000), title = "Simple scatter plot", theme = "BLUE")
#'
#' @export
scatterplotly <- function(x, y, xlab = NULL, ylab = NULL,
theme,
groupcolor, groupsize, groupsymbol,
title = "",
subtitle = "",
title.size = 30,
title.fontface = "Times New Roman",
description = "",
desc.x = 0.7,
desc.y = 0.2,
desc.size = 12,
desc.fontface = "arial",
markersize = 5,
markeropacity = 0.8,
markertype = "circle",
markerlinewidth = 1,
markerlinecolor = "black",
width = NULL,
height = NULL,
xaxis.range = NULL,
yaxis.range = NULL, ...){
# Help plot -----------------------------------------------------------------
# If both x and y are missing show a help plot
# This will serve as a help document as well
if (missing(x) && missing(y)) {
set.seed(123)
p <- scatterplotlyhelp(x = round(rnorm(100),2), y = round(rnorm(100), 2))
print(p)
return("No data provided. Showing help instead...")
}
# Handle single x/y arguments -----------------------------------------------
# If only x is specified (like in base plot)
# Force to y
if ((!missing(x) && missing(y))) {
ylab <- paste0("<b>", deparse(substitute(x)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
xlab <- "Index"
y <- x
x <- 1:length(y)
}
# If only y is specified
if ((missing(x) && !missing(y))) {
ylab <- paste0("<b>", deparse(substitute(y)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
xlab <- "Index"
y <- y
x <- 1:length(y)
}
# Create x-axis and y-axis labels -------------------------------------------
if (is.null(xlab)) {
xlab <- paste0("<b>", deparse(substitute(x)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
}
if (is.null(ylab)) {
ylab <- paste0("<b>", deparse(substitute(y)), "</b><br>",
"<sup> Type:", class(y), "</sup>")
}
# Create hoverinfo ----------------------------------------------------------
hovertxt <- if (!missing(groupcolor)) {
paste0("<b>x:</b> ", x, "<br>",
"<b>y:</b> ", y, "<br>",
"<b>Color:</b> ", groupcolor, "<br>")
}else{
paste0("<b>x:</b> ", x, "<br>",
"<b>y:</b> ", y, "<br>")}
if (!missing(groupsize)){
hovertxt <- paste0(hovertxt, "<b>Size:</b>", groupsize)
}
# Create plot ---------------------------------------------------------------
# Create colorbar only if input is numeric
if (!missing(groupcolor)) {
if (is.numeric(groupcolor)){
colorbarlist <- list(title = deparse(substitute(groupcolor)))
}else{
colorbarlist <- NA
}
}else{
colorbarlist <- NA
}
# Create markerlist based on inputs
markerlist <- list(line = list(width = markerlinewidth, color = markerlinecolor),
opacity = markeropacity,
colorbar = colorbarlist)
if(missing(groupsize))markerlist$size <- markersize
if(missing(groupsymbol))markerlist$symbol <- markertype
# Plot
p <- plotly::plot_ly(x = x, y = y,
color = groupcolor,
size = groupsize,
symbol = groupsymbol,
type = "scatter",
mode = "markers",
marker = markerlist,
hoverinfo = "text",
text = hovertxt, ...) %>%
plotly::layout(xaxis = list(title = xlab, range = xaxis.range),
yaxis = list(title = ylab, domain = c(0.01, 0.9), range = yaxis.range),
font = list(family = "arial"),
#margin = list(b = 0, t = 0, l = 0, r = 0),
width = width, height = height,
annotations = list(
# Title and sub-title
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = 0, y = 1.05,
align = "left",
font = list(size = title.size, family = title.fontface),
text = paste0("<b>", title, "</b><br><sup>", subtitle, "</sup>")),
# Description
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = desc.x, y = desc.y,
align = "left",
font = list(size = desc.size, family = desc.fontface),
text = paste0(description))
)
)
# Add theme -----------------------------------------------------------------
if (!missing(theme)) p <- colorscheme(p, theme = theme)
# Return --------------------------------------------------------------------
return(p)
}
# Scatterplotly help plot
# Just a visual way to relay all the important arguments
scatterplotlyhelp <- function(x, y){
# Initialize parameters and arguments
groupcolor <- sample(LETTERS[1:2], size = length(x), replace = T)
groupsymbol <- sample(letters[1:2], size = length(x), replace = T)
groupsize <- sample(1:length(x), size = length(x))
markersize <- 5
markertype <- "circle"
markerlinewidth <- 1
title = "Title here..."
subtitle = "Subtitle here..."
title.size = 25
description = "Description can be<br>inserted here..."
desc.x = 0.8
desc.y = 0.2
desc.size = 18
markersize = 5
markertype = "circle"
markerlinewidth = 1
markerlinecolor = "black"
markeropacity = 0.8
width = NA
height = NA
# Labels
xlab <- paste0("<b>", deparse(substitute(x)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
ylab <- paste0("<b>", deparse(substitute(y)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
# Create hoverinfo ----------------------------------------------------------
hovertxt <- paste0("<b>x:</b> ", x, "<br>",
"<b>y:</b> ", y, "<br>",
"<b>Color:</b> ", groupcolor, "<br>",
"<b>Size:</b>", groupsize)
# Create plot ---------------------------------------------------------------
# Create colorbar only if input is numeric
colorbarlist <- NA
# Create markerlist based on inputs
markerlist <- list(line = list(width = markerlinewidth, color = markerlinecolor),
opacity = markeropacity,
colorbar = colorbarlist)
# Plot
p <- plotly::plot_ly(x = x, y = y,
color = groupcolor,
size = groupsize,
symbol = groupsymbol,
type = "scatter",
mode = "markers",
marker = markerlist,
hoverinfo = "text",
text = hovertxt) %>%
plotly::layout(xaxis = list(title = xlab),
yaxis = list(title = ylab, domain = c(0.01, 0.9)),
font = list(family = "arial"),
#margin = list(b = 0, t = 0, l = 0, r = 0),
width = width, height = height,
annotations = list(
# Title and sub-title
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = 0, y = 1.05,
align = "left",
font = list(size = title.size, family = "Times New Roman"),
text = paste0("<b>", title, "</b><br><sup>", subtitle, "</sup>")),
# Description
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = desc.x, y = desc.y,
align = "left",
font = list(size = desc.size, family = "arial"),
text = paste0(description)),
# Help annotations
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.15, y = 0.95,
ax = 45, ay = 45,
align = "left",
font = list(size = 12),
text = paste0("Title and subtitle are shown here.<br>",
"Use the <em>title</em> and <em>subtitle</em> arguments.<br>",
"<b>Note:</b> <em>title.size</em> controls both title and subtitle size"),
bgcolor = "#d9d9d9"),
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.85, y = 0.10,
ax = -45, ay = 35,
align = "left",
font = list(size = 12),
text = paste0("A Description can be added (optional) ",
"using the <em>description</em> argument.<br>",
"Location and size can controlled using the ",
"<em>desc.x, desc.y and desc.size</em> arguments."),
bgcolor = "#d9d9d9"),
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.0, y = 0.33,
ax = 35, ay = 35,
align = "left",
font = list(size = 12),
text = paste0("Axis labels can added using<br>",
" the <em>xlab and ylab</em> arguments"),
bgcolor = "#d9d9d9"),
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.8, y = 0.6,
ax = 45, ay = -45,
align = "left",
font = list(size = 12),
text = paste0("X and Y axis data can be added using the <em>x</em> and <em>y</em> arguments.<br>",
"group level mapping can be specified using the following:<br>",
"<em>groupcolor</em>, <em>groupsize</em> and <em>groupsymbol</em>"),
bgcolor = "#d9d9d9")
)
)
return(p)
}
royr2/plotlyvis documentation built on May 27, 2019, 11:47 p.m.
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#' @title scatterplotly
#'
#' @description
#' Create scatterplots using \href{https://plot.ly/r}{plotly's R API}.
#' Type \code{scatterplotly()} for visual help.
#'
#' @details
#' Internally, \code{plot_ly()} is used to generate all plots. All of the above arguments are
#' mapped to specific arguments to \code{plot_ly()}. The function assigns default values to
#' many \code{plot_ly()} arguments like marker-size, marker-opacity etc. to allow for
#' an easier interface.
#'
#' Type \code{plotlyvis::scatterplotly} to see the source code. Alternatively you can press F2
#' if using R-Studio.
#'
#' Currently, four color themes are built in: BLUE, YELLOW, LIGHTGRAY and DARKGRAY.
#'
#' @note
#' The \emph{title}, \emph{subtitle} and \emph{description} are added as annotations.
#' By default the \code{xref} and \code{yref} arguments are set to \emph{paper}.
#' See \href{https://plot.ly/r/reference/#layout-annotationsplot}{plotly - annotations}
#' for more details.
#'
#' @author Riddhiman Roy
#'
#' @seealso
#' \code{\link[plotly]{plot_ly}}
#' \code{\link[plotly]{plotly_build}}
#'
#' @param x A vector of x-coordinates
#' @param y A vector of y-coordinates
#' @param xlab x-axis label (optional)
#' @param ylab y-axis label (optional)
#' @param theme color theme (see details below)
#' @param groupcolor a vector specifying group level color mapping
#' @param groupsize a vector specifying group level size mapping
#' @param groupsymbol a vector specifying group level marker-type mapping
#' @param title Chart title
#' @param subtitle Chart subtitle (optional)
#' @param title.size Chart title size (default: 30)
#' @param title.fontface Chart title (and subtitle) font family(default: Times New Roman)
#' @param description Character vector to specify additional description (optional)
#' @param desc.x Description annotation's x position (default: 0.7)
#' @param desc.y Description annotation's y position (default: 0.2)
#' @param desc.size Description annotation's font size (default: 12)
#' @param desc.fontface Description annotation's font family (default: arial)
#' @param markersize Point size (in px) (default: 5)
#' @param markeropacity Point alpha (0 1) (default: 1)
#' @param markertype Point style (default: circle)
#' @param markerlinewidth Width of line around point (default: 1)
#' @param markerlinecolor Color of line around point (default: Black)
#' @param width Canvas width (default: 800)
#' @param height Canvas height (default: 600)
#' @param xaxis.range xaxis limits (a numeric vector of size two specifying lower and upper limits)
#' @param yaxis.range yaxis limits (a numeric vector of size two specifying lower and upper limits)
#' @param ... Other arguments that can be passed to plot_ly()
#'
#' @importFrom stats rnorm
#' @importFrom magrittr %>%
#'
#' @return
#' Returns a plotly built object. Use $ for further manipulations and edits.
#'
#' @examples
#' library(plotlyvis)
#'
#' # Simple scatter plot
#' scatterplotly(x = rnorm(1000), y = rnorm(1000), title = "Simple scatter plot")
#'
#' # Group level mappings
#' n = 500
#' x = seq(-1, 1, length.out = n)
#' y = round(2 * x^2 + rnorm(n, sd = 0.25),2)
#' size = c(1:250, 250:1)
#' color = sample(LETTERS[1:4], size = n, replace = TRUE)
#' symbol = sample(letters[1:3], size = n, replace = TRUE)
#' scatterplotly(x = x, y = y,
#' groupcolor = color,
#' groupsize = size,
#' groupsymbol = symbol,
#' title = "Advanced scatterplot",
#' subtitle = "Scatterplot with group level color, size and symbol mappings")
#'
#' #Theme
#' scatterplotly(x = rnorm(1000), y = rnorm(1000), title = "Simple scatter plot", theme = "BLUE")
#'
#' @export
scatterplotly <- function(x, y, xlab = NULL, ylab = NULL,
theme,
groupcolor, groupsize, groupsymbol,
title = "",
subtitle = "",
title.size = 30,
title.fontface = "Times New Roman",
description = "",
desc.x = 0.7,
desc.y = 0.2,
desc.size = 12,
desc.fontface = "arial",
markersize = 5,
markeropacity = 0.8,
markertype = "circle",
markerlinewidth = 1,
markerlinecolor = "black",
width = NULL,
height = NULL,
xaxis.range = NULL,
yaxis.range = NULL, ...){
# Help plot -----------------------------------------------------------------
# If both x and y are missing show a help plot
# This will serve as a help document as well
if (missing(x) && missing(y)) {
set.seed(123)
p <- scatterplotlyhelp(x = round(rnorm(100),2), y = round(rnorm(100), 2))
print(p)
return("No data provided. Showing help instead...")
}
# Handle single x/y arguments -----------------------------------------------
# If only x is specified (like in base plot)
# Force to y
if ((!missing(x) && missing(y))) {
ylab <- paste0("<b>", deparse(substitute(x)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
xlab <- "Index"
y <- x
x <- 1:length(y)
}
# If only y is specified
if ((missing(x) && !missing(y))) {
ylab <- paste0("<b>", deparse(substitute(y)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
xlab <- "Index"
y <- y
x <- 1:length(y)
}
# Create x-axis and y-axis labels -------------------------------------------
if (is.null(xlab)) {
xlab <- paste0("<b>", deparse(substitute(x)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
}
if (is.null(ylab)) {
ylab <- paste0("<b>", deparse(substitute(y)), "</b><br>",
"<sup> Type:", class(y), "</sup>")
}
# Create hoverinfo ----------------------------------------------------------
hovertxt <- if (!missing(groupcolor)) {
paste0("<b>x:</b> ", x, "<br>",
"<b>y:</b> ", y, "<br>",
"<b>Color:</b> ", groupcolor, "<br>")
}else{
paste0("<b>x:</b> ", x, "<br>",
"<b>y:</b> ", y, "<br>")}
if (!missing(groupsize)){
hovertxt <- paste0(hovertxt, "<b>Size:</b>", groupsize)
}
# Create plot ---------------------------------------------------------------
# Create colorbar only if input is numeric
if (!missing(groupcolor)) {
if (is.numeric(groupcolor)){
colorbarlist <- list(title = deparse(substitute(groupcolor)))
}else{
colorbarlist <- NA
}
}else{
colorbarlist <- NA
}
# Create markerlist based on inputs
markerlist <- list(line = list(width = markerlinewidth, color = markerlinecolor),
opacity = markeropacity,
colorbar = colorbarlist)
if(missing(groupsize))markerlist$size <- markersize
if(missing(groupsymbol))markerlist$symbol <- markertype
# Plot
p <- plotly::plot_ly(x = x, y = y,
color = groupcolor,
size = groupsize,
symbol = groupsymbol,
type = "scatter",
mode = "markers",
marker = markerlist,
hoverinfo = "text",
text = hovertxt, ...) %>%
plotly::layout(xaxis = list(title = xlab, range = xaxis.range),
yaxis = list(title = ylab, domain = c(0.01, 0.9), range = yaxis.range),
font = list(family = "arial"),
#margin = list(b = 0, t = 0, l = 0, r = 0),
width = width, height = height,
annotations = list(
# Title and sub-title
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = 0, y = 1.05,
align = "left",
font = list(size = title.size, family = title.fontface),
text = paste0("<b>", title, "</b><br><sup>", subtitle, "</sup>")),
# Description
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = desc.x, y = desc.y,
align = "left",
font = list(size = desc.size, family = desc.fontface),
text = paste0(description))
)
)
# Add theme -----------------------------------------------------------------
if (!missing(theme)) p <- colorscheme(p, theme = theme)
# Return --------------------------------------------------------------------
return(p)
}
# Scatterplotly help plot
# Just a visual way to relay all the important arguments
scatterplotlyhelp <- function(x, y){
# Initialize parameters and arguments
groupcolor <- sample(LETTERS[1:2], size = length(x), replace = T)
groupsymbol <- sample(letters[1:2], size = length(x), replace = T)
groupsize <- sample(1:length(x), size = length(x))
markersize <- 5
markertype <- "circle"
markerlinewidth <- 1
title = "Title here..."
subtitle = "Subtitle here..."
title.size = 25
description = "Description can be<br>inserted here..."
desc.x = 0.8
desc.y = 0.2
desc.size = 18
markersize = 5
markertype = "circle"
markerlinewidth = 1
markerlinecolor = "black"
markeropacity = 0.8
width = NA
height = NA
# Labels
xlab <- paste0("<b>", deparse(substitute(x)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
ylab <- paste0("<b>", deparse(substitute(y)), "</b><br>",
"<sup> Type:", class(x), "</sup>")
# Create hoverinfo ----------------------------------------------------------
hovertxt <- paste0("<b>x:</b> ", x, "<br>",
"<b>y:</b> ", y, "<br>",
"<b>Color:</b> ", groupcolor, "<br>",
"<b>Size:</b>", groupsize)
# Create plot ---------------------------------------------------------------
# Create colorbar only if input is numeric
colorbarlist <- NA
# Create markerlist based on inputs
markerlist <- list(line = list(width = markerlinewidth, color = markerlinecolor),
opacity = markeropacity,
colorbar = colorbarlist)
# Plot
p <- plotly::plot_ly(x = x, y = y,
color = groupcolor,
size = groupsize,
symbol = groupsymbol,
type = "scatter",
mode = "markers",
marker = markerlist,
hoverinfo = "text",
text = hovertxt) %>%
plotly::layout(xaxis = list(title = xlab),
yaxis = list(title = ylab, domain = c(0.01, 0.9)),
font = list(family = "arial"),
#margin = list(b = 0, t = 0, l = 0, r = 0),
width = width, height = height,
annotations = list(
# Title and sub-title
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = 0, y = 1.05,
align = "left",
font = list(size = title.size, family = "Times New Roman"),
text = paste0("<b>", title, "</b><br><sup>", subtitle, "</sup>")),
# Description
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
showarrow = F,
x = desc.x, y = desc.y,
align = "left",
font = list(size = desc.size, family = "arial"),
text = paste0(description)),
# Help annotations
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.15, y = 0.95,
ax = 45, ay = 45,
align = "left",
font = list(size = 12),
text = paste0("Title and subtitle are shown here.<br>",
"Use the <em>title</em> and <em>subtitle</em> arguments.<br>",
"<b>Note:</b> <em>title.size</em> controls both title and subtitle size"),
bgcolor = "#d9d9d9"),
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.85, y = 0.10,
ax = -45, ay = 35,
align = "left",
font = list(size = 12),
text = paste0("A Description can be added (optional) ",
"using the <em>description</em> argument.<br>",
"Location and size can controlled using the ",
"<em>desc.x, desc.y and desc.size</em> arguments."),
bgcolor = "#d9d9d9"),
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.0, y = 0.33,
ax = 35, ay = 35,
align = "left",
font = list(size = 12),
text = paste0("Axis labels can added using<br>",
" the <em>xlab and ylab</em> arguments"),
bgcolor = "#d9d9d9"),
list(xref = "paper", yref = "paper",
xanchor = "left", yanchor = "top",
x = 0.8, y = 0.6,
ax = 45, ay = -45,
align = "left",
font = list(size = 12),
text = paste0("X and Y axis data can be added using the <em>x</em> and <em>y</em> arguments.<br>",
"group level mapping can be specified using the following:<br>",
"<em>groupcolor</em>, <em>groupsize</em> and <em>groupsymbol</em>"),
bgcolor = "#d9d9d9")
)
)
return(p)
}
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