<div dir="ltr"><div> Dear Dominik Gresch,<div><br></div><div>Greetings of the Day!!</div><div><br></div>I am interested in calculating the 
topological invariant Z2  for a 2D material using
 the Z2 pack. I have already run the scf, nscf calculations using first 
principles code Quantum Espresso and further, ran calculations using <a href="http://pw2wan.in" target="_blank">pw2wan.in</a> and .win files in Wannier90 code. So, I have output files .eig and .mmn.</div><div>I tried using and editing the code given at  "<a href="https://z2pack.greschd.ch/en/latest/examples/fp/espresso.html" target="_blank">https://z2pack.greschd.ch/en/latest/examples/fp/espresso.html</a>". I dont want to run z2cmd mentioned in line "<br><pre><span>system</span> <span>=</span> <span>z2pack</span><span>.</span><span>fp</span><span>.</span><span>System</span><span>(</span>
    <span>input_files</span><span>=</span><span>input_files</span><span>,</span>
    <span>kpt_fct</span><span>=</span><span>[</span><span>z2pack</span><span>.</span><span>fp</span><span>.</span><span>kpoint</span><span>.</span><span>qe</span><span>,</span> <span>z2pack</span><span>.</span><span>fp</span><span>.</span><span>kpoint</span><span>.</span><span>wannier90</span><span>],</span>
    <span>kpt_path</span><span>=</span><span>[</span><span>"<a href="http://bi.nscf.in" target="_blank">bi.nscf.in</a>"</span><span>,</span> <span>"bi.win"</span><span>],</span>
    <span>command</span><span>=</span><span>z2cmd</span><span>,</span>
    <span>executable</span><span>=</span><span>'/bin/bash'</span><span>,</span>
    <span>mmn_path</span><span>=</span><span>'bi.mmn'</span>
<span>)"<span style="font-family:arial,sans-serif"><font size="2"><br>Instead, I want to use the output files from wannier90 and</font> directly, use them to calculate WCC and topological invariants.</span> <span style="font-family:arial,sans-serif">Can you please guide and help me out in editing the code accordingly.<br><br></span></span></pre><pre><span style="font-family:arial,sans-serif"><span>Waiting for your reply.<br><br></span></span></pre><pre><span style="font-family:arial,sans-serif"><span>Thanking you,<br></span></span></pre><pre><span style="font-family:arial,sans-serif"><span>Parrydeep Kaur Sachdeva <br></span></span></pre><pre><span style="font-family:arial,sans-serif"><span>Research Scholar<br></span></span></pre><pre><span style="font-family:arial,sans-serif"><span>Institute of Nano Science and Technology<br></span></span></pre><pre><span><span style="font-family:arial,sans-serif">Mohali, India</span></span></pre></div></div>