Learn R Programming

⚠️There's a newer version (4.4.2) of this package.Take me there.

lessR (version 3.5.5)

Less Code, More Results

Description

Each function accomplishes the work of several or more standard R functions. For example, two function calls, Read() and CountAll(), read the data and generate summary statistics for all variables in the data frame, plus histograms and bar charts as appropriate. Other functions provide for descriptive statistics, a comprehensive regression analysis, analysis of variance and t-test, plotting, bar chart, histogram, box plot, density curves, calibrated power curve, reading multiple data formats with the same function call, variable labels, color themes, and a built-in help system. A confirmatory factor analysis of multiple indicator measurement models is available, as are pedagogical routines for data simulation such as for the Central Limit Theorem. Compatible with 'RStudio' and 'knitr' including generation of R markdown instructions for interpretative output.

Copy Link

Version

Install

install.packages('lessR')

Monthly Downloads

3,521

Version

3.5.5

License

GPL (>= 2)

Maintainer

David W Gerbing

Last Published

February 9th, 2017

Functions in lessR (3.5.5)

Correlation

Correlation Analysis
corEFA

Exploratory Factor Analysis and Multiple Indicator Measurement Model
BarChart

Bar Chart for One or Two Variables
corProp

Proportionality Coefficients from Correlations
corReorder

Reorder Variables in a Correlation Matrix
BoxPlot

Boxplot
corCFA

Confirmatory Factor Analysis of a Multiple Indicator Measurement Model
ANOVA

Analysis of Variance
corReflect

Reflect Specified Variables in a Correlation Matrix
corRead

Read Specified Correlation Matrix
dataEmployee

Data: Employees
dataJackets

Data: Motorcycle Type and Thickness of Jacket
corScree

Eigenvalue Plot of a Correlation Matrix
dataReading

Data: Reading Ability
CountAll

CountAll Descriptive Analysis of all Variables in the Data Frame
Density

Density Curves from Data plus Histogram
dataMach4

Data: Machiavellianism
dataLearn

Data: Distributed vs Massed Practice
dataCars93

Data: Cars93
dataBodyMeas

Data: Body Measurements
label

Assign Variable Labels [Supersceded by VariableLabels]
Histogram

Histogram
LineChart

Line Chart such as a Run Chart or Time-Series Chart
Merge

Merge Two Data Frames Horizontally or Vertically
details

Display Contents of a Data File and Optional Variable Labels
Nest

Nest the Values of an Integer or Factor Variable
Help

Help System for Statistics by Topic that Suggests Related Functions
PieChart

Pie Chart
Model

Regression Analysis, ANOVA or t-test
Logit

Logit Regression Analysis
Recode

Recode the Values of an Integer or Factor Variable
print.out_all

Display All Text Output from a Saved List Object
print.out_piece

Display a Portion of Output from a Saved List Object
regPlot

regPlot Analysis
showColors

Display All Named R Colors and Corresponding rgb Values
prob.tcut

Plot t-distribution Curve and Specified Cutoffs with Normal Curve
prob.norm

Compute and Plot Normal Curve Probabilities over an Interval
prob.znorm

Plot a Normal Curve with Shaded Intervals by Standard Deviation
Read

Read Contents of a Data File with Optional Variable Labels and Feedback
Regression

Regression Analysis
simCLT

Pedagogical Simulation for the Central Limit Theorem
SummaryStats

Summary Statistics for One or Two Variables
theme

Set the Default Color Theme and Other System Settings
Sort

Sort the Rows of a Data Frame
simMeans

Pedagogical Simulation of Sample Means over Repeated Samples
simCImean

Pedagogical Simulation for the Confidence Interval of the Mean
Subset

Subset the Values of an Integer or Factor Variable
to

Create a Sequence of Numbered Variable Names with a Common Prefix and Width
Transform

Transform the Values of an Integer or Factor Variable
simFlips

Pedagogical Binomial Simulation, Coin flips
values

List the Values of a Variable
xRow

Add the Word Row to Case Labels that Could be Numeric
VariableLabels

Return or Assign a Variable Label
xNum

Text Processing: Convert a Number to a Word
xP

Text Processing: Print Formatted Numbers
xU

Text Processing: Capitalize First Letter of a Word
xAnd

Text Processing: Insert and Into a List
ttestPower

Compute a Power Curve for a One or Two Group t-test
Write

Write the Contents of a Data Frame to an External File
ttest

Generic Method for t-test and Standardized Mean Difference with Enhanced Graphics
xW

Text Processing: Wrap Words to Create New Lines From a Specified Line
Plot

Plot One or Two Continuous and/or Categorical Variables