Figure 5

Positional scores: detecting periodic sites. (a): Positional score as a function of the position of the sites. The analyzed sequence is that of the fifth row of Fig. 3. (b): The x-axis, respectively the y-axis, is given by ${10}^{-{\mathcal{S}}_{po\text{s}}(P)}=p_v(S^{\prime }(P))$ (see Eq. 2) computed at P = 7270, P = 10000 respectively. The analyzed sequence is that of (a). (c): Same plot as in (b) with some additional noise in the position of the sites (the parameters correspond to the last row of Fig. 3). (d): Same plot as in (c) but the x-axis is computed at P = 5300 and the y-axis at P = 8700. (b), (c), (d): the red lines give the bisector f(x) = x. See text for a detailed explanation of the results.