This package uses S3 classes to help clarify expectations for function arguments and return values.
cpath_pal_luv
A function that:
takes a vector numeric argument x
, each value expected to be
between 0 and 1
returns a matrix with a row for each value of x
,
and three columns: l
, u
, v
Philosophically, this acts just like a continuous-palette function,
except that LUV
values are returned instead of hex-codes.
cpath_rescaler
A function that:
takes a numerical input x
(vector, each value between 0 and 1)
returns a rescaled numerical vector (call it y
),
each member between 0 and 1
There shall be a monotonic relationship between x
and y
.
cpath_surface_hl
A function that:
takes a numeric input lum
(vector, each value between 0 and 100)
returns values for hue (degrees)
pth_mat
A numeric matrix with:
three columns, corresponding to luminance, blue-yellow, green-red.
one row for each color.
an additional class to identify the color space.
subsetting will not drop
dimensions.
Associated classes:
pth_cielab
uses CIELAB space.
pth_cieluv
uses CIELUV space.
pth_cam02ucs
uses CAM02-UCS space.
pth_cam16ucs
uses CAM16-UCS space.
pth_jzazbz100
uses Jzabaz space, scaled to 100.
pth_hex
character
, each with six-digit lower-case hex-code
pth_palette
A function that, for each numeric input (0 <= x <= 1
), returns a color in a
given color space.
Associated classes:
pth_palette_hex
built using hex codes.
pth_palette_path
built using a path in the color space.
pth_hue_surface
A function that:
takes a numeric input lum
(vector, each value between 0 and 100)
returns values for hue (degrees)
-pth_chroma_trajectory
A function that:
takes a numeric input x
(vector, each value between 0 and 1)
returns matrix with as many rows as values for x
,
columns for luminance, chroma