cor.lag                 Lag/Lead Correlation
cor.spearman            Spearman rank correlation
cv.annu.fv              Calculate future value of annuity
cv.annu.pv              Calculate present value of annuity
cv.axp                  Create logarithm with a random base
cv.bondprice            Calculate the plain vanilla bond price
cv.diff                 Calculating the difference of a time series
cv.drawdown             Largest draw down of returns
cv.lag                  Create a lag variable
cv.lead                 Create a lead variable
cv.logs                 Create logarithm with a random base
cv.pctcng               Calculating rate of return of a vector
cv.powers               Create nth power variable
df.sortcol              Sort a data frame by a column
df.stack                Stack data frame by one classifier
ds.corm                 Correlation matrix
ds.kurt                 Calculating kurtosis for numeric data.
ds.mode                 Calculating mode for numeric data
ds.skew                 Calculating skewness for numeric data
ds.summ                 Descriptive statistics of a data frame
pl.2ts                  Time series plot for two variables
pl.3smoothtxt           Scatter smooth plot with text overlay
pl.3txt                 Scatter plot with text overlay
pl.coplot               Scatter plot of x and y divided by z
pl.hist                 Plot histograms for a data frame
pl.histgg               Plot histograms for a data frame with ggplot2
pl.hs                   Plot histograms and scatter plots for a data
                        frame
pl.hsd                  Plot histogram with density line for a data
                        frame
pl.multiplot            Multiple plot function for ggplot2 objects
pl.s                    Plot scatter plots for a data frame
pl.sm                   Plot scatter smooth plots for a data frame
pl.ts                   Plot time series plots for a data frame
pl.tss                  Time series plot with multiple variables
reg.adj.r.squared       Adjusted R-squared for lm.fit
reg.aic                 AIC for lm.fit
reg.bic                 BIC for lm.fit
reg.dof                 Degree of freedom for lim.fit
reg.dw                  Durbin-Watson Test
reg.linreg              Linear regression processor
reg.model               Linear model generator
reg.r.squared           R-squared for lm.fit
reg.std.err             Standard error for lim.fit
tr.log                  Sigmoid function
tr.logtb                Logistic function
tr.nd                   Normal density function
tr.unli                 Unit normal loss integral
xd.avt                  Download data from Alpha Vantage
xd.fred                 Download data from Federal Reserve Bank of St.
                        Louis
