Calculates various call statistics per chromosome.
The estimators implemented here are based solely on the segmentation results, which is very fast. In the original proposal by Fridlyand et al. , the authors estimates the parameters by converting segment-level calls back to locus-level calls and there do the calculations. The difference between the two approaches should be minor, particularly for large density arrays.
Returns a CxK
data.frame, where C is the number of regions that
meet the criteria setup by argument
and (K-4)/2 is the number of call types.
The first column is the chromosome index, the second and the third
are the first and last position, and the fourth the length
(=last-first+1) of the chromosome.
The following columns contains call summaries per chromosome.
For each chromosome and call type, the total length of such calls
on that chromosome is reported together how large of a fraction
of the chromosome such calls occupy.
 Fridlyand et al. Breast tumor copy number aberration
phenotypes and genomic instability, BMC Cancer, 2006.
For more information see
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