BasicTrans.R

## A collection of 6 self-defined functions                                 ##
## 1. co() - transform variable with carry-over rate                        ##
## 2. pc() - transform variable with power curve rate                       ##
## 3. sc() - transform variable with s curve rates                          ##
## 4. meth.c.p() - find out best parameters for transforming with co()+pc() ##
## 5. meth.c.s() - find out best parameters for transforming with co()+sc() ##
## 6. cp.vs.cs() - compare the 2 methodology (4 & 5) and offer the best     ##
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