<div dir="ltr">Hi developers,<div> The doxygen docs are a little ambiguous on gmx_fft_2d_real(), and the source doesn't offer much clarification because we're wrapping external libraries. Given a real-to-complex 2D FFT on a grid of size x by y, is the output a complex grid of size x by y also? There are comments about in-place FFT (which I'm not doing) taking a 5*4 real array and writing a 5*2 complex array.</div><div><br></div><div>(The context of this is trying to compute power spectra for an analysis routine.)</div><div><br></div><div>Thanks,</div><div>--Peter<br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><br>----------------------------------------------------------------------<br>Peter Kasson, MD, PhD<br>Associate Professor<br>Departments of Molecular Physiology and Biological Physics<br>and of Biomedical Engineering<br>University of Virginia<br></div></div></div></div></div></div></div></div>