print_ipath_pdf: Write an iPath3 metabolic pathways map to pdf
In betsig/ipath: Plot metabolic pathways with iPath3

Write an iPath3 metabolic pathways map to pdf

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print_ipath_pdf(ipath_data, file_name = NULL, default_width = 2,
  default_color = "#bdbdbd", default_radius = 5,
  textbox_textcol = NULL, textbox_col = NULL)

`ipath_data`	data.frame formatted for sending to ipath
`file_name`	pdf file name to export plot.
`default_width`	Default path/edge width (px) for the non-selected parts of the map.
`default_color`	Hex color value. Non-selected parts of the map will use this color by default.
`default_radius`	Compound radius (px) for the non-selected parts of the map.
`textbox_textcol`	hex value for text (in box) color
`textbox_col`	hex value for box color