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Layout Speed Options - Iteration Factors

Layout speed can be influenced by selecting time limits and iteration bounds for the different layout phases. Optional layout phases can be skipped altogether.

-t <num> | -timelimit <num>
   Sets the time limit to <num> seconds of real time. If the time limit is exceeded, the fastest possible layout mode is switched on. A time limit does not mean that the layout really needs that much time. Layout may be faster because the graph structure is very simple, or it may be slower because even the fastest possible layout already exceeds the time limit. Note: Layout depends on real time, i.e. the demand on computer resources. Thus, a given time limit may result in two identical runs of the program taking different amounts of time.

-f | -fast
   The fastest layout mode is switched on. This is very useful for very large graphs, however there is a trade-off between time and layout quality. The -fast option implies -bmax 2 -cmax 2 -pmax 2.

-fasticons
  Loads the icon files fast. This may reduce drawing quality if not all icon colors are available.

-b <num> | -bmax <num> | -bending <num>
num default: 100
     See graph attribute bmax.

-cmin <num>
num default: 0
  See graph attribute cmin.

-c <num> | -cmax <num> | -crossing <num>
num default: infinite
      See graph attribute cmax.

-pmin <num>
num default: 0
  See graph attribute pmin.

-p <num> | -pmax <num> | -pendulum <num>
num default: 100
      See graph attribute pmax.

-piter <num>
num default: 2
  Number of iterations in the pendulum method resulting in balancing in one direction. The pendulum method can be imagined like this: The nodes on level n are fixed on the ceiling. The pendulum swings <num> times. Then the nodes on level n+1 are fixed on the ceiling, i.e. the pendulum is turned upside down. Now it swings again <num> times. This process of turning is iterated at least the number of times given by the -pmin.

-rmin <num>
num default: 0
  See graph attribute rmin.

-r <num> | -rmax <num> | -rubberband <num>
num default: 100
      See graph attribute rmax.

-smax <num>
num default: 100
  See graph attribute smax.

-nocopt | -nocopt2
   See graph attribute crossing_phase2. If layout calculation is slow it is advisable to skip this phase before trying to reduce the number of iterations for the crossing reduction phase (-cmax option).

-nocoptl | -nocoptloc
   See graph attribute crossing_optimization.

-amax <num>
  See graph attribute amax.


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