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Frowns
ChemoInformatics System
 
Documentation
  Tutorial
    Hello World
    Find Duplicates
    Transforms
    MOL File
    MoleculeDock
    GraphViz Depict
    Smarts
    Fingerprint
    Cycles

Downloads
  Sourceforge

Applications
  SaltFinder
  Simple Salt Stripper

E-mail
  Brian Kelley

Exits
  vflib
  Python

  GraphViz


Required Versions
  Python 2.2
  vflib
   


Frowns is a chemoinformatics toolkit geared toward rapid development of chemistry related algorithms.  It is written in almost 100% Python with a small portion written in C++.

Frowns is loosely based on the PyDaylight API that Andrew Dalke wrote to wrap the daylight C API.  In some cases programs written using PyDaylight will also work under Frowns with a few minor changes.  A good overview of PyDaylight is available at here.

A good place to look at what Smarts and Smiles are is at the daylight web site located at http://www.daylight.com/

Frowns Features
  • Smiles parser
  • Smarts substructure searching
  • SD file parser with SD field manipulations
  • Depiction for SD files with coordinates
  • Molecule Fingerprint generation
  • Several forms of Ring Detection available
  • Simple aromaticity perception
  • Everything's a graph (i.e. can form canonical strings from incomplete pieces of a molecule)
  • Full source code
  • Really bad depiction of arbitray molecules! (requires AT&T's GraphViz)