./math/graphopt, Optimize graph layouts

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Branch: CURRENT, Version: 0.4.1nb5, Package name: graphopt-0.4.1nb5, Maintainer: pkgsrc-users

In contrast to Graphviz and other graph optimizers, graphopt does
not use a heuristic approach to layout optimization. Instead, it
uses basic principles of physics to iteratively determine optimal
layout. Each node is given mass and an electric charge, and each
edge is represented as a spring. Node mass, electric charge,
optimal spring length, and the spring constant are tweakable in
the gui in realtime.

For most graphs, this is all that is needed - hit 'go' and the
graph organizes itself much as the analagous real-life system would
if constrained to two dimensions. For more complex graphs, some
fiddling with the physical parameters at different stages of
optimization usually does the trick.

To accomodate very large graphs, an additional mechanism called
layering was added. When a graph is loaded, nodes are assigned to
layers based on their relative positions. During optimization,
you can choose to hide any number of layers. Any nodes assigned
to a layer lower than the selected layer are not only hidden, but
neither their electric charges nor the forces of the springs attached
to them are figured into the forces acting on the visible nodes.
In effect, those nodes cease to exist, and a smaller graph is
allowed to lay itself out without being constrained by an excessive
number of nodes.


Required to run:
[x11/gtk]

Required to build:
[pkgtools/x11-links] [pkgtools/cwrappers]

Master sites:

Filesize: 75.793 KB

Version history: (Expand)

CVS history: (Expand)


   2023-08-02 21:21:59 by Nia Alarie | Files touched by this commit (69) 
Log message:
*: Mark packages that were originally identified as requiring
C++03 due to failing to build with a C++14 default compiler
with FORCE_CXX_STD instead of USE_LANGUAGES.
   2021-10-26 12:56:13 by Nia Alarie | Files touched by this commit (458) 
Log message:
math: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes
   2021-10-07 16:28:36 by Nia Alarie | Files touched by this commit (458) 
Log message:
math: Remove SHA1 hashes for distfiles
   2018-07-18 02:06:25 by Joerg Sonnenberger | Files touched by this commit (168) 
Log message:
Mark packages that require C++03 (or the GNU variants) if they fail with
C++14 default language.
   2018-01-01 23:30:04 by Roland Illig | Files touched by this commit (537) 
Log message:
Sort PLIST files.

Unsorted entries in PLIST files have generated a pkglint warning for at
least 12 years. Somewhat more recently, pkglint has learned to sort
PLIST files automatically. Since pkglint 5.4.23, the sorting is only
done in obvious, simple cases. These have been applied by running:

  pkglint -Cnone,PLIST -Wnone,plist-sort -r -F
   2017-08-16 22:21:18 by Thomas Klausner | Files touched by this commit (180) 
Log message:
Follow some http redirects.
   2015-11-04 00:33:46 by Alistair G. Crooks | Files touched by this commit (262) 
Log message:
Add SHA512 digests for distfiles for math category

Problems found locating distfiles:
	Package dfftpack: missing distfile dfftpack-20001209.tar.gz
	Package eispack: missing distfile eispack-20001130.tar.gz
	Package fftpack: missing distfile fftpack-20001130.tar.gz
	Package linpack: missing distfile linpack-20010510.tar.gz
	Package minpack: missing distfile minpack-20001130.tar.gz
	Package odepack: missing distfile odepack-20001130.tar.gz
	Package py-networkx: missing distfile networkx-1.10.tar.gz
	Package py-sympy: missing distfile sympy-0.7.6.1.tar.gz
	Package quadpack: missing distfile quadpack-20001130.tar.gz

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.
   2012-09-12 01:04:36 by Aleksej Saushev | Files touched by this commit (180) 
Log message:
"user-destdir" is default these days