segclassexam

[cyanpku]

Hi Carsten,

Thank you very much for explaining how the segment refine3D works!

Another issue of spring that confused me:

The "power spectrum resolution cutoff" option seems to rescale the pixel size for measuring the helix width and helical normal. I keep the pixel size in A the same as 3.24A. If I set the cutoff at 0.05, the hlx width reads 46A, and if I change the cutoff to 0.1, the hlx width goes up to 105A. Both of which are not the true width sine it should be something around 220 A. 

When I use resolution cutoff higher than 0.1 (0.11), there's attribute error:

AttributeError: 'SegClassExam' object has no attribute 'pixelsize'

Would you please help me sort it out so that I can have a accurate reading of the hlx width?

Thank you very much!

Jing

[cyanpku]

Oops, just found out it's a bug fixed in the newer version of spring. I'll go update!