mosaic v1.1.0


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Project MOSAIC Statistics and Mathematics Teaching Utilities

Data sets and utilities from Project MOSAIC (<>) used to teach mathematics, statistics, computation and modeling. Funded by the NSF, Project MOSAIC is a community of educators working to tie together aspects of quantitative work that students in science, technology, engineering and mathematics will need in their professional lives, but which are usually taught in isolation, if at all.



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Purpose and design

The mosaic package is designed to facilitate the use of R in statistics and calculus instruction by providing a number of functions that (a) make many common tasks fit into a common template, and (b) simplify some tasks that would otherwise be too complicated for beginners.


You install from CRAN using


or from github with


If you want to try out our developmental code (the beta branch), use

devtools::install_github("ProjectMOSAIC/mosaic", ref="beta")

Updates to the master github repository are more frequent than CRAN updates. Our beta branch is where we implement bug fixes most quickly and develop new features. We try to keep it pretty stable, but there may be a few rough edges, missing documentation, etc. while things are in progress.

If you discover a problem with any version of the package, be sure to let us know so that we can address it. Post an issue on github or send email to

Getting Started with mosaic

The package includes several vignettes to help you get started. One of these vignettes (Resources Related to the mosaic package) includes a list of many resources, both within the package and external to it. That's a good place to start.

Getting Help

Need help? Try posting a question on Stack Overflow using the tag r-mosaic.

Project MOSAIC

Project MOSAIC is a community of educators working to develop a new way to introduce mathematics, statistics, computation and modeling to students in colleges and universities.

Our goal: Provide a broader approach to quantitative studies that provides better support for work in science and technology. The focus of the project is to tie together better diverse aspects of quantitative work that students in science, technology, and engineering will need in their professional lives, but which are today usually taught in isolation, if at all.

  • Modeling. The ability to create, manipulate and investigate useful and informative mathematical representations of a real-world situations.
  • Statistics. The analysis of variability that draws on our ability to quantify uncertainty and to draw logical inferences from observations and experiment.
  • Computation. The capacity to think algorithmically, to manage data on large scales, to visualize and interact with models, and to automate tasks for efficiency, accuracy, and reproducibility.
  • Calculus. The traditional mathematical entry point for college and university students and a subject that still has the potential to provide important insights to today's students.

The name MOSAIC reflects the first letters --- M, S, C, C --- of these important components of a quantitative education. Project MOSAIC is motivated by a vision of quantitative education as a mosaic where the basic materials come together to form a complete and compelling picture.

Find out more about Project MOSAIC at [].

Functions in mosaic

Name Description
MAD All pairs mean and sum of absolute differences
MAD_ All pairs mean and sum of absolute differences
TukeyHSD.lm Additional interfaces to TukeyHSD
adapt_seq Adaptively generate sequences in an interval
mean_ Aggregating functions
maggregate Aggregate for mosaic
CIsim Compute confidence intervals from (multiple) simulated data sets
FunctionsFromData Create function from data
Broyden Multi-Dimensional Root Finding
CIAdata Return a dataset based on the CIA World Factbook
aggregatingFunction2 2-ary aggregating functions
as.xtabs Convert objects to xtabs format
ashplot Average Shifted Histograms
bargraph Create bar graphs from raw data
cor_test.formula Alternative formula interface for cor.test
columns return a vector of row or column indices
compareMean Compare means between 2 groups
diffmean Difference in means and proportions
do Do Things Repeatedly
cross Factor cross products
docFile Return the path to a documentation file in a package
dotPlot Dotplots
fitSpline Fit splines to data
fortify.summary.lm Extract data from R objects
ladd Add to Lattice Plots
xyz2latlon Convert back and forth between latitude/longitude and XYZ-space
makeColorscheme Create a color generating function from a vector of colors
findZerosMult Find the zeros of a function of two or more variables
fitModel Fit a nonlinear least squares model
getVarFormula Extract data from a data frame using a formula interface
googleMap Display a point on earth on a Google Map
aggregatingFunction1 1-ary Aggregating functions
aggregatingFunction1or2 1- or 2-ary aggregating functions
cull_for_do Cull objects used with do()
binom.test Exact Tests for Proportions
cdist Central portion of a distribution
deg2rad Convert between degrees and radians
deltaMethod deltaMethod has moved to a separate package
ediff Lagged Differences with equal length
fav_stats Some favorite statistical summaries
findZeros Find zeros of functions
inspect Inspect objects
confint.htest Extract summary statistics
dpqrdist Distribution wrapper
fetchData Defunct functions now in the fetch package
derivedVariable Create new variables from logicals
dfapply apply-type function for data frames
expandFun Expand the left-hand side of a formula
factorize Conditionally convert vectors to factors
mUSMap Make a US map with ggplot2
mWorldMap Make a world map with ggplot2
panel.levelcontourplot Lattice plot that draws a filled contour plot
panel.lmbands show confidence and preciction bands on plots
makeMap Make a map with ggplot2
print.msummary.lm Modified summaries
n_missing counting missing elements
mid midpoints along a sequence
mm Defunct modeling function
.is.formula Check if formula
chisq Extract Chi-squared statistic
fortify.hclust mosaic tools for clustering
compareProportion Compare proportions between 2 groups
confint Confidence interval methods for output of resampling
evalFormula Evaluate a formula
evalSubFormula Evaluate a part of a formula
freqpoly Turn histograms into frequency polygons
mosaic-package mosaic: the Project MOSAIC package
pdist Illustrated probability calculations from distributions
perctable Cross tabulation displayed as percents or proportions
qdist Illustrated quantile calculations from distributions
r.squared Extract r-squared value
plotFun Plotting mathematical expressions
plotModel Plot a regression model
prop Compute proportions, percents, or counts for a single level
prop.test Exact and Approximate Tests for Proportions
freqpolygon Frequency Polygons
gwm Groupwise Models (Defunct)
inferArgs Infer arguments
linear.algebra Functions for teaching linear algebra.
logical2factor Turn logicals into factors; leave other things alone
is.wholenumber Check for whole number values
joinFrames Join data frames
logit Logit and inverse logit functions
mPlot Interactive plotting
mosaic.options Setting options for mosaic package functions
rfun Generate a natural-looking function
rgeo-internals rgeo internal functions
set.rseed Set seed in parallel compatible way
sp2df Transforms a shapefile into a dataframe
ntiles Create vector based on roughly equally sized groups
orrr Odds Ratio and Relative Risk for 2 x 2 Contingency Tables
plotPoints Scatter plot of points
qdata The Data Distribution
reexports Objects exported from other packages
relm Resample a Linear Model
panel.plotFun Panel function for plotting functions
panel.plotFun1 Panel function for plotting functions
qdata_v The Data Distribution
project Projections
rlatlon Sample longitude and latitude on a sphere
rspin Simulate spinning a spinnner
theme.mosaic Lattice Theme
t_test Student's t-Test
update_ci Update confidence interval
value Extract value from an object
rsquared Extract r-squared value
rstudio_is_available Check whether RStudio is in use
standardName Standardization of Geographic Names
statTally Tally test statistics
xpnorm Augmented versions of pnorm and qnorm
rescale Rescale
rflip Tossing Coins
surround Format strings for pretty output
swap Swap values among columns of a data frame
zscore Compute z-scores
xqqmath Augmented version of qqmath
mplot Generic plotting
plotCumfreq Cumulative frequency plots
plotDist Plots of Discrete and Continuous Distributions
rand Random Regressors
read.file Read data files
repeater-class Repeater objects
resample More Random Samples
tally Tabulate categorical data
theme_map ggplot2 theme for maps
xchisq.test Augmented Chi-squared test
xhistogram Augmented histograms
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Vignettes of mosaic

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Last month downloads


Type Package
Date 2017-08-25
VignetteBuilder knitr
License GPL (>= 2)
LazyLoad yes
LazyData yes
NeedsCompilation no
Packaged 2017-08-26 13:54:28 UTC; rpruim
Repository CRAN
Date/Publication 2017-08-26 17:25:12 UTC

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