String Calculation Visualisation of Images

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String Calculation Visualisation of Images

Post by woffermans » Thu Jan 10, 2019 9:12 am

Dear ABINIT friends,

There is a nice tutorial about a STRING calculation ... tring.html

Unfortunately, the tutorial does not mention how to visualise the images and even better the evolution of the ``string of images`` during the optimisation. This is a big deficit to my opinion.

If I run a STRING calculation, several *_IMG* files are generated, for example It is not clear how to extract the ion positions out of this file.

Can someone give me a hint on how to achieve the visualisation of the generated images?

Even better, can the tutorial be updated with this information? A link to another source would already be sufficient.

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Joined: Thu Apr 25, 2019 10:44 am

Re: String Calculation Visualisation of Images

Post by ketong » Wed May 08, 2019 3:31 am

Hi woffermanns,

I think you can use VESTA/OVITO/VMD to visualize the string calculations. If you want to use them, you need to convert the * to supported format by them. At this time, Abipy is your friend. You can get detailed information from

VESTA can visualize every image conveniently. It supports poscar and xsf format. (Note: the file name must be POSCAR or .xsf, because VESTA identifies the format according to the name.) The detailed information can be seen from
OVITO and VMD also support POSCAR format. In addition, they can create a movie using these image files. Please see these websites to get more information:,

I hope this information is useful to you.

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