Continuous scale constructor.
continuous_scale(aesthetics, scale_name, palette, name = waiver(), breaks = waiver(), minor_breaks = waiver(), labels = waiver(), limits = NULL, rescaler = rescale, oob = censor, expand = waiver(), na.value = NA_real_, trans = "identity", guide = "legend", position = "left", super = ScaleContinuous)
aesthetics  The names of the aesthetics that this scale works with 

scale_name  The name of the scale 
palette  A palette function that when called with a numeric vector with values between 0 and 1 returns the corresponding values in the range the scale maps to. 
name  The name of the scale. Used as the axis or legend title. If

breaks  One of:

minor_breaks  One of:

labels  One of:

limits  One of:

rescaler  Used by diverging and n colour gradients
(i.e. 
oob  Function that handles limits outside of the scale limits
(out of bounds). The default replaces out of bounds values with 
expand  Vector of range expansion constants used to add some
padding around the data, to ensure that they are placed some distance
away from the axes. Use the convenience function 
na.value  Missing values will be replaced with this value. 
trans  Either the name of a transformation object, or the object itself. Builtin transformations include "asn", "atanh", "boxcox", "date", "exp", "hms", "identity", "log", "log10", "log1p", "log2", "logit", "modulus", "probability", "probit", "pseudo_log", "reciprocal", "reverse", "sqrt" and "time". A transformation object bundles together a transform, its inverse,
and methods for generating breaks and labels. Transformation objects
are defined in the scales package, and are called 
guide  A function used to create a guide or its name. See

position  The position of the axis. "left" or "right" for vertical scales, "top" or "bottom" for horizontal scales 
super  The super class to use for the constructed scale 