From: John Stone (
Date: Mon Jun 19 2006 - 15:55:13 CDT

  Have you emailed John Mongan about the Python error message you're
getting? This might be a bug in IED itself, since it's complaining
about getting an empty string rather than something much more serious.

  John Stone

On Fri, Jun 16, 2006 at 09:40:23AM +0800, Shulin Zhuang wrote:
> Dear all,
> When I use VMD to do interactive essential dynamics(IED:
> I meet with the python library error:
> vmd/lib/vmd/scripts/python/
> value error: empty string for float()
> I use vmd1.84 on IRIX300 and download lib_IRIX6_64.
> The detaild error is indicated in the attached picture.
> I use ptraj to do the PCA of one of my trajectory. For all atom of the
> protein or for CA atom, I successfully get the first 25 eigenvectors and
> projection file that needed for view in VMD(VMD1.8.4) with IED. I do this on
> IRIX300.
> Unfortunately, I could not project the motion mode. I attache a picture, at
> whose bottom, the error message is underlined in red.
> Please give me any suggestions. Great thanks
> Best regards
> Shulin
> --
> Shulin Zhuang
> Chemistry Department
> Zhejiang University PRC

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