Hi Rahul,

In what format do you have the coordinates? I have a program that translates between various periodic formats (fdf, VASP, CASTEP, Quantum Espresso) that I could send you. Some viewers (I use gdis) can save structures as fdf. And then there's ASE, which can read and write in a plethora of formats (but you need to now a bit of Python).

Cheers,

  Herbert

On 05/09/2019 07:54, RAHUL SURESH wrote:
Hi

On a basic question- I am computing large-scale density functional theory (DFT) calculations. The system has 700 atoms approx. Is there any particular software to generate coordinates for siesta input to be included in %block atomiccoordinatesandatomicspecies?

Or in case if I am reading the input from a file, say "coordinate.data", should the coordinates be terminated with atomic species number?

Thank you
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/Regards,/
/Rahul**/

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Herbert Fruchtl
Senior Scientific Computing Officer
School of Chemistry, School of Mathematics and Statistics
University of St Andrews
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