recolor_phylopic function

Recolor a PhyloPic image

Function to recolor and change alpha levels of a PhyloPic image.

recolor_phylopic(
  img,
  alpha = 1,
  color = NULL,
  fill = NULL,
  remove_background = TRUE
)

Arguments

• img: A Picture or png array object, e.g., from using get_phylopic().

• alpha: numeric. A value between 0 and 1, specifying the opacity of the silhouette.

• color: character. Color to make the outline of the silhouette. If NULL, the outline color is not changed.

• fill: character. Color to make the body of the silhouette. If NULL, the body color is not changed.

• remove_background: logical. Should any white background be removed? Only useful if img is a Picture

  object. See details.

Returns

A Picture or png array object (matching the type of img)

Details

Some PhyloPic silhouettes do not have a transparent background. Consequently, when color is used with vectorized versions of these images, the entire image--including the background--is recolored. Setting remove_background to TRUE (the default) will remove any white parts of the image (which should only be the background).

See Also

Other transformations: flip_phylopic(), rotate_phylopic()