datreant.data make_filepath?

[Oliver Beckstein]

I inherited some old MDSynthesis scripts which contain "data.make_filepath":


fig.savefig(sim.data.make_filepath('Structure.MembraneMovement_AA/{}'.format(chain), sim.name + '_timeserieshist.pdf'))

MDS 0.6.1 throws an error AttributeError: 'Data' object has no attribute 'make_filepath' – what should I use instead?


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Oliver Beckstein, DPhil * oliver.b...@asu.edu
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[David Dotson]

Oliver,

You can use the now more-general behavior of the Sim itself to build desired filepaths. In this case, to achieve the same result I would do:

fig.savefig(sim['Structure.MembraneMovement_AA/{}/'.format(chain)][sim.name + '_timeserieshist.pdf'].abspath)

Basically, you can build any filepath as a Tree or Leaf object using a Sim's `__getitem__` behavior, and calling abspath on one of these objects gives the absolute path to it, whether or not the path points to an existing directory or file, respectively.

Does that help?

David 

[Oliver Beckstein]

> On 2 Aug, 2016, at 15:31, David Dotson <dot...@gmail.com> wrote:
>
> You can use the now more-general behavior of the Sim itself to build desired filepaths. In this case, to achieve the same result I would do:
>
> fig.savefig(sim['Structure.MembraneMovement_AA/{}/'.format(chain)][sim.name + '_timeserieshist.pdf'].abspath)
>
> Basically, you can build any filepath as a Tree or Leaf object using a Sim's `__getitem__` behavior, and calling abspath on one of these objects gives the absolute path to it, whether or not the path points to an existing directory or file, respectively.
>
> Does that help?

Yes, thanks, but I still needed to make sure that the directory exists:

datapath = 'domains/centerofmass/{}/'.format(chain)
sim[datapath].path.mkdir(exist_ok=True)
fig.savefig(sim[datapath][sim.name + '_timeserieshist.pdf'].abspath)

Is there a more concise way?

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Oliver Beckstein * orbe...@gmx.net
skype: orbeckst * orbe...@gmail.com