Inspect CFT Results

To clarify if the analysis is done correctly or to determine the parameters, you may sometimes want to inspect the results of the CFT. This can be done by the spectra inspector widget.

GUI: Analysis > Open spectra inspector or Ctrl+K → Ctrl+V

In this window, you can see the local- and global-CFT power spectra of the existing splines, and the estimated peak positions (red markers) if available. By clicking the "Load spline" button, you can set other splines in the tomogram for inspection.

After clicking "Upsample spectrum" to enable the upsampling mode, you can upsample the local power spectrum interactively by clicking the canvas.

If the spline is not well fitted to the image, the peaks of the local power spectrum are blurred, especially in the x (angular) direction.

Note

This widget is also used to measure the lattice parameters of unknown structures. See here for more information.