bib                     Create a bib file for R packages, including the
                        citations of user-defined packages.
dfplot                  Plot a dataframe, multiple ys against one x
dfplot2                 Plot a dataframe, one y against multiple xs
errorbar                add error bars to a scatterplot.
list2ascii              Save a list into an ASCII file. in: a list.
                        out: a file.
lmdf                    calculate linear regression between every two
                        columns in a data frame. in: a dataframes. out:
                        a dataframe showing the linear regression.
mf_skewness             Calculate the skewness of a distribution
name                    Enhancement of names()
packr                   Create a package
plotblank               plot a blank figure
plotcolorbar            A reminder for color bars. More palettes can be
                        found in 'colormap', 'RColorBrewer', and
                        'dichromat' packages.
plotcolors              A reminder for colors
plothist                Plot a user-customized hist
plotlm                  plot a linear regression figure and return a
                        list of parameters.
plotlty                 A reminder for lty
plotpairs               plot pair-wise correlations. in: a dataframe.
                        out: a figure.
plotpairs2              plot pair-wise correlations with p value. in: a
                        dataframe. out: a figure.
plotpch                 A reminder for pch
plotpkg                 plot daily download counts of packages
plottype                A reminder for type
readdir                 Read multiple tables into a list.
rpkg                    Create a new R package demo folder
rplc                    Replace strings in a file
se                      standard error
tapply2                 a friendly version of tapply for a column in a
                        dataframe
tapplydf                a friendly version of tapply for dataframes
tapplydfv               a friendly version of tapply
writefile               save csv file with asking if the file already
                        exists.
