We added "--highlight" to provide this functionality. This is an
"operation", and is used as follows:

import pybel

mol = pybel.readstring("smi", "CC(=O)Cl")
highlighter = pybel._operations["highlight"]
highlighter.Do(mol.OBMol, "C(=O) green")
mol.write("svg", "tmp.svg", opt={"u":None, "C":None}, overwrite=True)

This is equivalent to:
     obabel -:"CC(=O)Cl" -O tmp.svg -xC -xu --highlight "C(=O) green"

On 8 July 2013 09:43, david.lagorce <david.lago...@univ-paris-diderot.fr> wrote:
> Thanks Geoff...
> but I still have problem...I tried in svg and png and I have this message:
> ==============================
> *** Open Babel Warning  in PNG Format
>   Embedding in InChI format.
> Use the -xO (uppercase O) option for a different format
> ==============================
> *** Open Babel Warning  in InChI code
>   DB00573 :Omitted undefined stereo
>
>
>
> any idea ?
>
> Thank you
>
>
>
>
> --
> View this message in context: 
> http://forums.openbabel.org/highlight-substructures-with-pybel-tp4656468p4656473.html
> Sent from the openbabel-devel mailing list archive at Nabble.com.
>
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