export.topTable: Export a topTable, or a list of top tables to an excel file....
In drmjc/microarrays: A collection of microarray and genomic helper code.

Description Usage Arguments Author(s)

The first worksheet will be the summary, and subsequent worksheets are for each top table supplied. Additional benefits:
- Limits the number of significant figures to digits correctly for the P and q values
- includes a Pcount column
- includes gene information which uses the ID column and rownames of annot object
- includes a few columns of coefficients, for eg if the group-means parameterisation is used, then the values of the coefficients (ie the value for each 'group') may be appropriate to export.

  export.topTable(tt, file, annot = NULL, fixFC = TRUE,
    Pcount = NULL, coefficients = NULL, fit = NULL,
    digits = 4, summary = TRUE, drop.Bstat = TRUE,
    adj.Pval.colname = "FDR", ...)

`tt`	a topTable data.frame
`file`	the output file name
`annot`	the probe-level annotation object. rownames should be set to the probe ID, so tt$ID can match them
`fixFC`	fix the logFC to produce an absFC and direction columns
`Pcount`	an optional vector of Pcounts (ie how many times each probe was detected as present). Should be named so that tt$ID can match the probes
`coefficients`	an optional data.frame, of coefficients from the lmFit. You can use this arg to add custom columns to the topTable. eg the AvgExpr
`fit`	the lmFit object. Used to obtain the Standard error of each probe. using fit$stdev.unscaled * fit$sigma
`digits`	how many digits to round to?
`summary`	insert a worksheet into the excel workbook which contains a summary of the toptable
`drop.Bstat`	logical. If TRUE then the "B" column is not exported.
`adj.Pval.colname`	rather than "adj.P.Val", you can rename to column to "FDR", or "q", or similar.
`...`	additional arguments passed to write.xls