5 Graph Description Language (GDL) - Absint

• tempscheme
Type: integer
Default value: 1
Attribute of: top-level graph
Description:
This attribute only applies to the forcedir layout algorithm.
There are local and global temperature schemes. In global temperature schemes all nodes
have the same temperature.
– 1 (local temperature temp_speed)
Local adaptive temperature scheme with speedup during cooling.
– 2 (local temperature temp_normal)
Local adaptive temperature scheme with no speedup.
– 3 (global temperature temp_linear)
Linear curve.
– 4 (global temperature temp_hyperbolical)
Hyperbolic curve: very fast descent, then a low temperature for an extended period of
time
– 5 (global temperature temp_exponential)
Exponential descending temperature, i. e. a small temperature for an extended period
of time.
– 6 (global temperature temp_logarithmic)
Logarithmic descending, i. e. a small temperature for an extended period of time.
– 7 (global temperature temp_reverse_exponential)
Reverse exponential descending temperature, i. e. a high temperature for an extended
period of time.
– 8 (global temperature temp_reverse_logarithmic)
Reverse logarithmic descent, i. e. a high temperature for an extended period of time.
For details, see p. 115.
• temptreshold
Type: integer
Default value: 3
Attribute of: top-level graph
Description:
This attribute only applies to the forcedir layout algorithm.
Here it is used in the simulated annealing part of the algorithm. It specifies the threshold
value for the global temperature. The algorithm stops if the global temperature drops below
the value specified here.
For details, see p. 115.
• textcolor
Type: black, blue, red, ...
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