sign
The default value for sign is "positive" and it analyzes only data greater than zero.
There are also the options "negative" and "both" that will analyze only negative values or both positive and negative values of the data,
respectively. For large datasets with both positive and negative numbers,
it is usually recommended to perform a separate analysis for each group,
for the incentives to manipulate the numbers are usually different.
discrete
Most real data - like population numbers or accounting data - are discrete, so
the default is TRUE. This paramater sets rounding to the differences of the ordered data to avoid floating point number
errors in the second order distribution, that usually occurs when data is discrete
and the ordered numbers are very close to each other. If your data is continuous
(like a simulated lognormal) you should run with discrete = FALSE.