quick-r: data types
Post on 09-Nov-2015
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Data Input
Data types
Importing Data
Keyboard Input
Database Input
Exporting Data
Viewing Data
Variable Labels
Value Labels
Missing Data
Date Values
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Data TypesR has a wide variety of data types including scalars, vectors (numerical, character, logical), matrices,
data frames, and lists.
Vectors
a
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Home
The R Interface
Data Input
Data Management
Basic Statistics
Advanced Statistics
Basic Graphs
Advanced Graphs
Blog
ArraysArrays are similar to matrices but can have more than two dimensions. See help(array) for details.
Data FramesA data frame is more general than a matrix, in that different columns can have different modes
(numeric, character, factor, etc.). This is similar to SAS and SPSS datasets.
d
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summary(gender)
An ordered factor is used to represent an ordinal variable.
# variable rating coded as "large", "medium", "small'
rating
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