Package 'rPackedBar'

Plot rPackedBar in 'shiny'

Description

Output and render functions for using 'rPackedBar' within 'shiny' applications and interactive Rmd documents.

Usage

packedBarOutput(outputId, width = "100%", height = "400px",
  inline = FALSE, clickedBarInputId = paste0(outputId, "_clicked"))

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

Arguments

outputId	output variable to read from
width, height	Must be a valid CSS unit (like "100%", "400px", "auto") or a number, which will be coerced to a string and have "px" appended.
inline	use an inline (span()) or block container (div()) for the output
clickedBarInputId	The input id to assign the label of the clicked bar. Defaults to outputId_clicked and can be referenced in the server as input$outputId_clicked.
expr	An expression that generates an rPackedBar.
env	The environment in which to evaluate expr.
quoted	Is expr a quoted expression (with quote())? This is useful if you want to save an expression in a variable.

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Create a 'plotly' packed bar chart

Description

Packed bar charts are a variation of treemaps for visualizing skewed data. The concept was introduced by XanGregg at JMP (https://community.jmp.com/t5/JMP-Blog/Introducing-packed-bars-a-new-chart-form/ba-p/39972).

Usage

plotly_packed_bar(input_data, label_column, value_column,
  number_rows = "guess", plot_title = "", xaxis_label = "",
  hover_label = "", min_label_width = 0.03,
  color_bar_color = "steelblue", label_color = "black")

Arguments

input_data	data.frame with data to plot, should have a column of labels for bars and column of numbers relating to bar length
label_column	either the column number or quoted name in input_data to be used as labels (will be used by [[ to subset)
value_column	either the column number or quoted name in input_data to be used as numbers for bar lengths (will be used by [[ to subset). See details.
number_rows	The number of rows to occur in barchart (i.e. the number of colored bars). The default of 'guess' will attempt to find the 'elbow' in the numeric data with a min value of 3 and a max of 25.
plot_title	main title for plot
xaxis_label	label to put on xaxis
hover_label	text to appear by number in hover information (typically same as xaxis label)
min_label_width	min relative length of bar to receive a static label (too small and text will overflow sides of bar)
color_bar_color	color of main bars in chart (can be name or hex) remaining bars will be variations of gray
label_color	color of text labels that appear over colored bars

Details

The packed barchart currently only works for uniformly positive or uniformly negative data; negative values will be removed before plotting when mixed data is provided.

Value

'plotly' object of the packed bar chart

Examples

## Not run: 
data(GNI2014, package = 'treemap')

data.table::setDT(GNI2014)
my_input_data = GNI2014[,sum(population), by=country]

plotly_packed_bar(my_input_data,
                  label_column    = "country",
                  value_column    = "V1",
                  plot_title      = "Population 2014",
                  xaxis_label     = "Population",
                  hover_label     = "Population",
                  min_label_width = .025,
                  color_bar_color = "orange")

## End(Not run)

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