| 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. |