Package 'radarchart'

Make a ChartJS Radar Plot

Description

R bindings to the radar plot in the chartJS library

Usage

chartJSRadar(scores, labs, width = NULL, height = NULL, main = NULL,
  maxScale = NULL, scaleStepWidth = NULL, scaleStartValue = 0,
  responsive = TRUE, labelSize = 18, showLegend = TRUE, addDots = TRUE,
  colMatrix = NULL, polyAlpha = 0.2, lineAlpha = 0.8,
  showToolTipLabel = TRUE, ...)

Arguments

scores	Data frame or named list of scores for each axis. If labs is not specified then labels are taken from the first column (or element).
labs	Labels for each axis. If left unspecified labels are taken from the scores data set. If set to NA then labels are left blank.
width	Width of output plot
height	Height of output plot
main	Character: Title to be displayed
maxScale	Max value on each axis
scaleStepWidth	Spacing between rings on radar
scaleStartValue	Value at the centre of the radar
responsive	Logical. whether or not the chart should be responsive and resize when the browser does
labelSize	Numeric. Point label font size in pixels
showLegend	Logical whether to show the legend
addDots	Logical. Whether to show a dot for each point
colMatrix	Numeric matrix of rgb colour values. If NULL defaults are used
polyAlpha	Alpha value for the fill of polygons
lineAlpha	Alpha value for the outlines
showToolTipLabel	Logical. If TRUE then data set labels are shown in the tooltip hover over
...	Extra options passed straight to chart.js. Names must match existing options http://www.chartjs.org/docs/#getting-started-global-chart-configuration

Examples

# Using the data frame interface
chartJSRadar(scores=skills)

# Or using a list interface
labs <- c("Communicator", "Data Wangler", "Programmer", "Technologist",  "Modeller", "Visualizer")

scores <- list("Rich" = c(9, 7, 4, 5, 3, 7),
 "Andy" = c(7, 6, 6, 2, 6, 9),
 "Aimee" = c(6, 5, 8, 4, 7, 6))

# Default settings
chartJSRadar(scores=scores, labs=labs)

# Fix the max score
chartJSRadar(scores=scores, labs=labs, maxScale=10)

# Fix max and spacing
chartJSRadar(scores=scores, labs=labs, maxScale=12, scaleStepWidth = 2)

# Change title and remove legend
chartJSRadar(scores=scores, labs=labs, main = "Data Science Radar", showLegend = FALSE)

# Add pass through settings for extra options
chartJSRadar(scores=scores, labs=labs, maxScale =10, scaleLineWidth=5)

---

Tell htmltools where to output the chart

Description

Tell htmltools where to output the chart

Usage

chartJSRadar_html(id, style, class, width, height, ...)

Arguments

id	The id of the target object
style	css stylings
class	class of the target
width	width of target
height	height of target
...	extra arguments currently unused

---

Widget output function for use in Shiny

Description

Widget output function for use in Shiny

Usage

chartJSRadarOutput(outputId, width = "450", height = "300")

Arguments

outputId	output variable to read from
width	Must be valid CSS unit
height	Must be valid CSS unit

---

Check and prep the colour matrix

Description

Check and prep the colour matrix

Usage

colourMatrix(colMatrix)

Arguments

colMatrix

A 3 x n matrix of integers between 0-255

Value

The checked and prepped matrix of the same size

Examples

radarchart:::colourMatrix(diag(255, nrow=3))

---

Widget render function for use in Shiny

Description

Widget render function for use in Shiny

Usage

renderChartJSRadar(expr, env = parent.frame(), quoted = FALSE)

Arguments

expr	expression passed to shinyRenderWidget
env	environment in which to evaluate expression
quoted	Logical. Is expression quoted?

---

Run an example Shiny app

Description

The radarchart package contains a number of demo Shiny apps to illustrate how to use the plots. The code is in inst/shiny-examples/ and running this function will allow quick access to the apps.

Usage

runExampleApp(example)

Arguments

example

the name of the example. Choose from "basic" or "options".

Examples

## Not run: 
runExample("basic")

## End(Not run)

---

Autoscale the radar plot

Description

Autoscale the radar plot

Usage

setRadarScale(maxScale = NULL, scaleStepWidth = NULL, scaleStartValue = 0)

Arguments

maxScale	Numeric length 1. Desired max limit
scaleStepWidth	Numeric length 1. Spacing between rings
scaleStartValue	Numeric length 1. Value of the centre

Value

A list containing the scale options for chartjs

Examples

## Not run: 
setRadarScale(15, 3)
setRadarScale(15, 5, 2)

## End(Not run)

---

Skills in a team

Description

A dataset containing the skills vectors for three people

Usage

skills

Format

A data frame with 6 rows and 4 columns

Label

The axis label for chartJSRadar

Aimee

Vector of skills for Aimee

Andy

Vector of skills for Andy

Rich

Vector of skills for Rich

Source

Simulated

---

Rotated version of skills data

Description

A dataset containing the skills vectors for three people but by row rather than column. This data set is used to show how to rotate the data into a format accepted by chartJSRadar.

Usage

skillsByName

Format

A data frame with 6 rows and 4 columns

Name

Name of the team member

Communicator

Their Communicator score: 0-10

Data Wangler

Their Data Wangler score: 0-10

Modeller

Their Modeller score: 0-10

Programmer

Their Programmer score: 0-10

Technologist

Their Technologist score: 0-10

Visualizer

Their Visualizer score: 0-10

Source

Simulated

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