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