Estimate rate and shape parameters for the gamma distribution used to simulate gene expression means.
splatEstMean(norm.counts, params)
| norm.counts | library size normalised counts matrix. |
|---|---|
| params | SplatParams object to store estimated values in. |
SplatParams object with estimated values.
Parameters for the gamma distribution are estimated by fitting the mean
normalised counts using fitdist. The 'maximum
goodness-of-fit estimation' method is used to minimise the Cramer-von Mises
distance. This can fail in some situations, in which case the 'method of
moments estimation' method is used instead. Prior to fitting the means are
winsorized by setting the top and bottom 10 percent of values to the 10th
and 90th percentiles.