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![[Figure 8]](wa5151fig8mag.jpg)
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Figure 8
Determining periodicity in a histogram. (a) A sample histogram of projection coordinates with strong periodicity from a diffraction pattern in a mesh scan. The orange line represents a smooth average (see Fig. 7 ![[link]](../../../../../../logos/arrows/d_arr.gif){kind=small} ). (b) A sample histogram of projection coordinates without periodicity (within the Nyquist frequency) from a diffraction pattern in a mesh scan. The orange line represents a smooth average. (c) The Fourier spectrum of a normalized histogram from (a); the peak corresponding to the frequency of ∼370 Å is visible, as well as the doubling peak at ∼740 Å, which are outliers to the distribution. (d) The Fourier spectrum of a normalized histogram from (b); no distinct outliers are present in the distribution and the histogram is considered to be without any periodic pattern. |
![[Figure 8]](wa5151fig8.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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