Figure 1
From: A new non-linear normalization method for reducing variability in DNA microarray experiments
Signal-distribution comparison and QQ correlation plot. (a) Example array distribution plots (left) from kernel smoothed density estimates versus the log intensity data. The target distribution from v (black) is shown alongside that of an example array. (b) The QQ plot shows the correlation of the quantiles from x to the quantiles of the target v and describes a normalizing curve.