- image
magick image object returned by image_read() or image_graph()
- color
a valid color string such as
"navyblue" or "#000080". Use "none" for transparency.
- point
a geometry_point string indicating the starting point of the flood-fill
- fuzz
relative color distance (value between 0 and 100) to be considered similar
in the filling algorithm
- refcolor
if set, fuzz color distance will be measured against this color,
not the color of the starting point. Any color (within fuzz color distance of
the given refcolor), connected to starting point will be replaced with the color.
If the pixel at the starting point does not itself match the given refcolor
(according to fuzz) then no action will be taken.
- text
character vector of length equal to 'image' or length 1
- gravity
string with
gravity
value from gravity_types.
- location
geometry string with location relative to gravity
- degrees
rotates text around center point
- size
font-size in pixels
- font
string with font family such as "sans", "mono", "serif",
"Times", "Helvetica", "Trebuchet", "Georgia", "Palatino" or "Comic Sans".
See magick_fonts() for what is available.
- style
value of style_types for example "italic"
- weight
thickness of the font, 400 is normal and 700 is bold, see magick_fonts().
- kerning
increases or decreases whitespace between letters
- decoration
value of decoration_types for example "underline"
- strokecolor
a color string
adds a stroke (border around the text)
- strokewidth
set the strokewidth of the border around the text
- boxcolor
a color string
for background color that annotation text is rendered on.