Spectral Analysis on Time-Course Expression Data: Detecting Periodic Genes Using a Real-Valued Iterative Adaptive Approach

Figure 2

(a) A time-course periodic signal with frequency =0.2 sampled by the bio-like sampling strategy; 16 time points are assigned to the interval (0,8], and 8 time points are assigned to the interval (8,16]. (b) The periodogram derived using RIAA. The maximum value (peak) in the periodogram locates at frequency =0.195.

(a)

(b)