Greg's Miscellaneous Functions


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.wald Contrasts and estimable linear functions of model coefficients for lm, glm, lme, and geese objects
aggregate.table Create 2-Way Table of Summary Statistics
Args Formatted Argument List of a Function
balloonplot Plot a graphical matrix where each cell contains a dot whose size reflects the relative magnitude of the corresponding component.
bandplot Plot x-y Points with Locally Smoothed Mean and Standard Deviation
barplot2 Enhanced Bar Plots
bluered Generate a smoothly varying set of colors
boxplot.n Produce a Boxplot Annotated with the Number of Observations
capture Capture printed output of an R expression in a string
ci Compute Confidence Intervals
colorpanel Generate a smoothly varying set of colors
combinations Enumerate the Combinations or Permutations of the Elements of a Vector
combine Combine R Objects With a Column Labeling the Source
contrast.lm Compute and test arbitrary contrasts for regression objects (Depreciated, use 'fit.contrasts' instead.)
CrossTable Cross Tabulation with Tests for Factor Independence
ddirichlet Functions for the Dirichlet Distribution
elem Display Information about Elements in a Given Object
env Display Information about All Loaded Environments
estimable Contrasts and estimable linear functions of model coefficients for lm, glm, lme, and geese objects
even Detect odd/even integers
fast.prcomp Efficient computation of principal components and singular value decompositions.
fast.svd Efficient computation of principal components and singular value decompositions.
fit.contrast Compute and test arbitrary contrasts for regression objects
foldchange Compute fold-change or convert between log-ratio and fold-change.
foldchange2logratio Compute fold-change or convert between log-ratio and fold-change.
glh.test Test a General Linear Hypothesis for a Regression Model
greenred Generate a smoothly varying set of colors
heatmap.2 Draw a Heat Map
hist2d Compute and Plot a 2-Dimensional Histogram
iapply Undocumented functions
interleave Interleave Rows of Data Frames or Matrices
inv.logit Generalized logit and inverse logit function
invalid Test if a value is missing, empty, or contains only NA or NULL values
is.what Run Multiple is.* Tests on a Given Object
keep Remove All Objects, Except Those Specified
ll Display Information about Objects in a Given Environment
logit Generalized logit and inverse logit function
logratio2foldchange Compute fold-change or convert between log-ratio and fold-change.
lowess Scatter Plot Smoothing
make.contrasts Construct a User-Specified Contrast Matrix
matchcols Select columns names matching certain critera
mixedorder Order or Sort strings with embedded numbers so that the numbers are in the correct order
mixedsort Order or Sort strings with embedded numbers so that the numbers are in the correct order
nobs Compute the Number of Non-missing Observations
odd Detect odd/even integers
ooplot Create an OpenOffice style plot
overplot Plot multiple variables on the same region, with appropriate axes
panel.overplot Plot multiple variables on the same region, with appropriate axes
permutations Enumerate the Combinations or Permutations of the Elements of a Vector
permute Randomly Permute the Elements of a Vector
plotCI Plot Error Bars
plotmeans Plot Group Means and Confidence Intervals
print.glh.test Test a General Linear Hypothesis for a Regression Model
qqnorm.aov Makes a half or full normal plot for the effects from an aov model
quantcut Create a Factor Variable Using the Quantiles of a Continuous Variable
rdirichlet Functions for the Dirichlet Distribution
read.xls Read Excel files
redblue Generate a smoothly varying set of colors
redgreen Generate a smoothly varying set of colors
remove.vars Remove or rename variables in a dataframe
rename.vars Remove or rename variables in a dataframe
reorder.factor Reorder the Levels of a Factor
residplot Undocumented functions
rich.colors Rich color palettes
rtPCR Teratogenesis rtPCR data
running Apply a Function Over Adjacent Subsets of a Vector
sinkplot Send textual R output to a graphics device
smartlegend Place a legend in a specified logical ("top","bottom", "left", "right", etc) location on a plot.
space Space points in an x-y plot so they don't overlap.
sprint Capture printed output of an R expression in a string
summary.glh.test Test a General Linear Hypothesis for a Regression Model
textplot Display text information in a graphics plot.
trim Remove leading and trailing spaces from character strings
wapply Compute the Value of a Function Over a Local Region Of An X-Y Plot