Graph SVG

Graphic/layout definition file have the extension gr.

• include: file
  This file usually holds object definitions, but there is no
  limitation.
• title:
• layout: pattern
  • Objects are identified by single letters.
    Each occurence of an object is assigned a number (s1, s2, ...). This is how objects are referenced later.
  • Sub-objects "s" are placed inside another object "m" using the syntax:
    m(sss)
  • Objects are stacked on top of other objects using the slash /.
    mmm/sss
• name: letter-number long_name
  Assign a longer name to an object. We can use the short or long name to reference an object.
• fontsize: size
  Default font size is 20.
• def: letter shape title width height fillcolor strokecolor
  • shape may be either user defined, or one
    of rect, circle, ellipse, filler.
  • User defined shape ends with the suffix .s and correspond
    to a file name. See below for user defined shapes.
  • Title can't have spaces
• spacing: horizontal_spacing vertical_spacing
  Control the spacing between objects.
  Default horizontal spacing is 10.
  Default vertical spacing is 20.
• to: object1 object2 [ options ]
  • a=0 arc level
  • b=0 Put an arrow at both ends of the line (b=1)
  • w=2 line width
  • dash= dash pattern like 5,5. Pass as stroke-array argument. See the SVG documentation for details.
  • c=black line color
  • t=text
  • h=-1 hide this line at this step
  • fhandle= tells where to connect the line on the source object.
  • thandle= tells where to connect the line on the target object.
    Default handles are left, tleft, bleft, right, tright, bright, top and bottom.
• re: object1 object2 [ options ]
  Works like to:, but there is no arrow at the end of the line.
• show: object [ objects ... ]
  Show an object.
• hide: object [ objects ... ]
  Hide an object.
• showt: object
  Show the name of an object.
• hidet: object
  Hides the name of an object.
• step: step-number

User defined shapes

• You can insert math expression between two dollar sign. You are provided with predefined variable you can use to express dimensions and positions. The variables are
  • x: X coordinate of the object
  • y: Y coordinate of the object
  • w: Width of the object
  • h: Height of the object
• Line starting with handle: define a handle used to connect lines. You specify the name of the handle, followed by x,y coordinates (using $math_expression$) and an anchor for text (either empty or middle).