Figure 3

Dependance of the measured signal w.r.t. probe array location. (a, b) The image shows for each probe the log₂ signal difference w.r.t to the median array (after quantile-quantile normalization), mapped to the location of the probe on the array. The value of MM-probes (which are located next to their corresponding PM probe) are set to the residual of their corresponding PM probe. (c, d) These images give an overview of the global array effect over all arrays. Each array is represented by a column, which is obtained by taking for each row in that array the median of values as shown in (a, b). For a description of the datasets see the Methods section.