rwmGetClassBreaks
From rworldmap v1.3-6
by Andy South
Internal function to set the numeric values for the breaks between data categories
Sets the values that determine how a vector of continuous data is classified into categories. Called by mapCountryData() and mapGriddedData()
- Keywords
- dplot
Usage
rwmGetClassBreaks(dataColumn, catMethod, numCats, verbose = TRUE, midpoint = 0)Arguments
- dataColumn
- the data vector to be classified, must be numeric
- catMethod
- the method to use to classify the data into categories, choice of "pretty", "fixedWidth", "diverging", "logFixedWidth","quantiles","categorical" or a numeric vector defining breaks
- numCats
- number of categories to put the data in, may be overidden if not possible under some classification methods
- verbose
- whether to print information messages to console TRUE/FALSE
- midpoint
- the midpoint to use if catMethod='diverging', default=0
Value
-
A vector specifying the numeric breaks between data categories.
See Also
The classInt package
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