Calculate Excel Range

xlrange = xlcalcrange(h,refCell,r,c,m,n)returns the full target range, xlrange in Excel A1 notation to cover an m-by-n array, starting from an offset of r rows & c columns from the starting cell, refCell.

Any workbook\worksheet prefix is removed from refcell, as are any absolute '$' markers prior to range calculation.
i.e.
refcell = 'C:\directorypath\[filename.xlsm]worksheet1'!$P$6:$AC$91

becomes:

refcell = P6:AC91

refcell can also be an Excel named range, but requires the Excel workbook to be open via an actxserver COM object, and a handle to the object, h, passed as a function argument. h is ignored if refcell is not a named range.

Note: this file makes use of 2 functions: dec2base27.m & base27dec.m that were sourced from inside of Mathwork's function, xlswrite.m

Please let me know of any bugs