Re: [Rdkit-discuss] (no subject)

[Greg L. <gre...@gm...>]

On Sat, Jul 28, 2012 at 12:10 PM, Gianluca Sforna <gi...@gm...> wrote:
> On Sat, Jul 28, 2012 at 7:51 AM, Huw Jones <huw...@gm...> wrote:
>> My question is am I using the wrong PIL or an outdated PIL (I did update the
>> PIL installed on my MacOS however that did not resolve the issue) or
>> something. The hack I used to fix the issue with no structures being
>> generated was not ideal after all?
>>
>> Many thanks for any suggestions you might have about this.
>
> To make a depiction the code tries to use three canvas backends:
> cairo, aggdraw, sping, in that order. The poor quality is because you
> ended up with the last one.

That's exactly it.

I have had problems installing cairo correctly on the Mac, so I think
the easiest solution is to install aggdraw on your mac:

- Download a distribution here:
https://bitbucket.org/2degrees/aggdraw-64bits/downloads/aggdraw-1.1-64bits.tar.gz
- extract the tarball somewhere
- edit setup.py and set FREETYPE_ROOT to "/usr/X11"
- set CFLAGS by runnig: export CFLAGS="-arch x86_64 -fpermissive"
- build the package: python setup.py build
- install the package: python setup.py install

after you do this, the rdkit rendering should automatically use
aggdraw and the quality should be a lot higher.

I hope this helps,
-greg