bdvis (version 0.2.37)

chronohorogram: Draws a chronohorogram of records

Description

Draws a detailed temporal representation (also known as chronohorogram) of the dates in the provided data set. For more information on the chronohorogram, please see the References section.

Usage

chronohorogram(
  indf = NA,
  title = "Chronohorogram",
  startyear = 1980,
  endyear = NA,
  colors = c("red", "blue"),
  ptsize = 1
)

Value

No return value, called for plotting the graph

Arguments

indf

input data frame containing biodiversity data set

title

title of the plot. Default is "Chronohorogram"

startyear

starting year for the plot. Default is 1980

endyear

end year for the plot. Default is current year

colors

Pair of colors to build color gradient, in the form of a character vector. Default is blue (less) - red (more) gradient c("red", "blue")

ptsize

point size adjustment factor. Default is 1

References

Arino, A. H., & Otegui, J. (2008). Sampling biodiversity sampling. In Proceedings of TDWG (pp. 77-78). Retrieved from http://www.tdwg.org/fileadmin/2008conference/documents/Proceedings2008.pdf#page=77

See Also

Other Temporal visualizations: bdcalendarheat(), tempolar()

Examples

if (FALSE) {
chronohorogram(inat)
}