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Computer Science

R Programming

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R Programming

Practice 95 skills across this outline.

Recommended next
Working Directory & Paths
Getting Started and Tooling · R Environment and Project Setup
Long-form lesson
Weighting distribution
25 categories
Functions and Program Structure · Modularity and Scripting
8%
Algorithms and Complexity
8%
Debugging and Testing · Testing Basics
8%
Control Flow · Loops
8%
Input and Output
8%
Getting Started and Tooling · Version Control Basics
6%

Skills

The comprehensive taxonomy of r programming — drill into a card to work its skills.

Getting Started and Tooling · R Environment and Project Setup

5 core skills3% total weight
0/5 completed
5 skills to mastery
1
Working Directory & PathsRecommended
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Installing & Loading PackagesAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Running R CodeAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
R MarkdownAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
5
RStudio BasicsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Getting Started and Tooling · Version Control Basics

3 core skills6% total weight
0/3 completed
3 skills to mastery
1
Resolving Merge ConflictsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Using .gitignoreAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Git CommitsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

Functions and Program Structure · Defining and Calling Functions

5 core skills0% total weight
0/5 completed
5 skills to mastery
1
Function DocumentationAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Default & Named ArgumentsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Scoping & EnvironmentsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
Vectorized FunctionsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
5
Defining FunctionsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Functions and Program Structure · Modularity and Scripting

4 core skills8% total weight
0/4 completed
4 skills to mastery
1
Package StructureAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
Code OrganizationAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Avoiding Global StateAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
source()Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Software Craft and Communication · Readability and Style

4 core skills4% total weight
0/4 completed
4 skills to mastery
1
Naming & FormattingAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
RefactoringAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Readable PipelinesAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
Style ConventionsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

Software Craft and Communication · Problem Decomposition and Explanation

3 core skills4% total weight
0/3 completed
3 skills to mastery
1
Communicating LimitationsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
Explaining Analysis StepsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Stating AssumptionsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

Algorithms and Complexity

3 core skills8% total weight
0/3 completed
3 skills to mastery
1
Vectorization PerformanceAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
apply-Family FunctionsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Performance PitfallsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Data Structures in R · Lists and Matrices

4 core skills0% total weight
0/4 completed
4 skills to mastery
1
apply/lapply/sapplyAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Converting Data StructuresAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
MatricesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
ListsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Data Structures in R · Data Frames and Tibbles

4 core skills3% total weight
0/4 completed
4 skills to mastery
1
Subsetting Data FramesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
FactorsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
TibblesAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
Data FramesAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

Data Structures in R · Vectors and Indexing

4 core skills5% total weight
0/4 completed
4 skills to mastery
1
Vector IndexingAvailable
15 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
Handling NA ValuesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
which() & Logical SubsettingAvailable
8 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
Creating VectorsAvailable
15 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

Syntax and Core Types · Operators and Expressions

5 core skills5% total weight
0/5 completed
5 skills to mastery
1
Comparison & Logical OperatorsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
%in% OperatorAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Arithmetic Operators & PrecedenceAvailable
12 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
Vectorized vs. Short-Circuit OperatorsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
5
ifelse()Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Syntax and Core Types · Atomic Types and Coercion

4 core skills0% total weight
0/4 completed
4 skills to mastery
1
Type ConversionAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
NA, NaN & InfAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Type CoercionAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
R Data TypesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Syntax and Core Types · Variables and Assignment

4 core skills4% total weight
0/4 completed
4 skills to mastery
1
Variable Assignment (<- vs. =)Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Naming ConventionsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Immutability vs. ReassignmentAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
Vectorized OperationsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

R-Specific Topics (Statistical Computing) · Simulation and Randomness

3 core skills3% total weight
0/3 completed
3 skills to mastery
1
set.seed() for ReproducibilityAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Random SamplingAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Simulation & VariabilityAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

R-Specific Topics (Statistical Computing) · Modeling and Formula Syntax

4 core skills5% total weight
0/4 completed
4 skills to mastery
1
Formula SyntaxAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
Logistic Regression (glm)Available
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Linear Models (lm)Available
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
Extracting Model OutputsAvailable
8 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

R-Specific Topics (Data Workflows) · Data Manipulation with dplyr

5 core skills3% total weight
0/5 completed
5 skills to mastery
1
filter()Available
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
mutate() & RecodingAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Joining Data FramesAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
select() & rename()Available
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
5
group_by() & summarize()Available
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

R-Specific Topics (Data Workflows) · Data Visualization with ggplot3

4 core skills3% total weight
0/4 completed
4 skills to mastery
1
Building ggplotsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
Customizing ggplotAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
FacetingAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
Creating Common PlotsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

R-Specific Topics (Data Workflows) · Reshaping with tidyr

3 core skills2% total weight
0/3 completed
3 skills to mastery
1
separate() & unite()Available
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
Handling Missing Values in ReshapingAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
pivot_longer() & pivot_wider()Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Text and Dates · Strings and Text Processing

3 core skills5% total weight
0/3 completed
3 skills to mastery
1
Basic String FunctionsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Cleaning Text DataAvailable
9 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Regular ExpressionsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

Text and Dates · Dates and Times

3 core skills3% total weight
0/3 completed
3 skills to mastery
1
Parsing Dates & Time ZonesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
lubridate FunctionsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Date/POSIXct ObjectsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Debugging and Testing · Debugging Workflow

4 core skills0% total weight
0/4 completed
4 skills to mastery
1
browser() & debug()Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Errors, Warnings & MessagesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
print() & str()Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
traceback()Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Debugging and Testing · Testing Basics

3 core skills8% total weight
0/3 completed
3 skills to mastery
1
testthatAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
2
stopifnot() & AssertionsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Testing with Edge CasesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Control Flow · Conditionals

3 core skills0% total weight
0/3 completed
3 skills to mastery
1
If/Else & Else-If ChainsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
switch()Available
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
Nested ConditionalsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

Control Flow · Loops

4 core skills8% total weight
0/4 completed
4 skills to mastery
1
next & breakAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
While LoopsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
3
For LoopsAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
4
Vectorization vs. LoopsAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems

Input and Output

4 core skills8% total weight
0/4 completed
4 skills to mastery
1
RDS FilesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet
2
Writing CSV FilesAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
3
Reading Excel FilesAvailable
10 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems
4
Reading CSV FilesAvailable
0 questions 0 flashcards Lesson available
Long-form lessonSlide-style lessonFlashcards — not available yetPractice problems — not available yet

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