Data manipulation with R:
Saved in:
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
New York, NY
Springer
2008
|
| Series: | Use R!
|
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | IX, 152 S. |
| ISBN: | 9780387747309 |
Staff View
MARC
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Record in the Search Index
| _version_ | 1804137613611761664 |
|---|---|
| adam_text | Contents
Preface
........................................................
V
1
Data
in R
................................................. 1
1.1
Modes and Classes
....................................... 1
1.2
Data Storage in
R
....................................... 2
1.3
Testing for Modes and Classes
............................ 7
1.4
Structure of
R
Objects
................................... 7
1.5
Conversion of Objects
.................................... 8
1.6
Missing Values
.......................................... 10
1.7
Working with Missing Values
............................. 10
2
Reading and Writing Data
................................. 13
2.1
Reading Vectors and Matrices
............................. 13
2.2
Data Frames: read
.
table
................................ 15
2.3
Comma- and Tab-Delimited Input Files
.................... 17
2.4
Fixed-Width Input Files
.................................. 17
2.5
Extracting Data from
R
Objects
.......................... 18
2.6
Connections
............................................ 23
2.7
Reading Large Data Files
................................. 25
2.8
Generating Data
........................................ 27
2.8.1
Sequences
........................................ 27
2.8.2
Random Numbers
................................. 29
2.9
Permutations
........................................... 30
2.9.1
Random Permutations
............................. 30
2.9.2
Enumerating All Permutations
...................... 30
2.10
Working with Sequences
.................................. 31
2.11
Spreadsheets
............................................ 33
2.11.1
The
R0DBC
Package on Windows
.................... 33
2.11.2
The gdata Package (All Platforms)
.................. 34
2.12
Saving and Loading
R
Data Objects
....................... 35
2.13
Working with Binary Files
................................ 36
2.14
Writing R Objects to Files in ASCII Format
................ 38
2.14.1
The write Function
............................... 38
2.14.2
The write.table function
......................... 39
2.15
Reading Data from Other Programs
....................... 39
R
and Databases
.......................................... 43
3.1
A Brief Guide to SQL
.................................... 43
3.1.1
Navigation Commands
............................. 43
3.1.2
Basics of SQL
..................................... 44
3.1.3
Aggregation
...................................... 45
3.1.4
Joining Two Databases
............................ 46
3.1.5
Subqueries
....................................... 47
3.1.6
Modifying Database Records
........................ 48
3.2
ODBC
................................................... 49
3.3
Using the RODBC Package
................................. 50
3.4
The DBI Package
........................................ 51
3.5
Accessing a MySQL Database
............................. 51
3.6
Performing Queries
...................................... 52
3.7
Normalized Tables
....................................... 52
3.8
Getting Data into MySQL
................................ 53
3.9
More Complex Aggregations
.............................. 55
Dates
...................................................... 57
4.1
as.Date
................................................ 57
4.2
The chron Package
...................................... 59
4.3
POSIX Classes
.......................................... 60
4.4
Working with Dates
..................................... 63
4.5
Time Intervals
.......................................... 64
4.6
Time Sequences
......................................... 65
Factors
.................................................... 67
5.1
Using Factors
........................................... 67
5.2
Numeric Factors
......................................... 70
5.3
Manipulating Factors
.................................... 70
5.4
Creating Factors from Continuous Variables
................ 72
5.5
Factors Based on Dates and Times
........................ 73
5.6
Interactions
............................................. 74
Subscripting
............................................... 75
6.1
Basics of Subscripting
.................................... 75
6.2
Numeric Subscripts
...................................... 75
6.3
Character Subscripts
..................................... 75
6.4
Logical Subscripts
....................................... 76
6.5
Subscripting Matrices and Arrays
......................... 77
6.6
Specialized Functions for Matrices
......................... 81
Contents
IX
6.7
Lists
................................................... 82
6.8
Subscripting Data Frames
................................ 83
7
Character Manipulation
................................... 87
7.1
Basics of Character Data
................................. 87
7.2
Displaying and Concatenating Character Strings
............ 87
7.3
Working with Parts of Character Values
.................... 89
7.4
Regular Expressions in
R
................................. 90
7.5
Basics of Regular Expressions
............................. 91
7.6
Breaking Apart Character Values
.......................... 93
7.7
Using Regular Expressions in
R
........................... 94
7.8
Substitutions and Tagging
................................ 98
8
Data Aggregation
..........................................101
8.1
table
..................................................101
8.2
Road Map for Aggregation
...............................106
8.3
Mapping a Function to a Vector or List
....................107
8.4
Mapping a function to a matrix or array
...................110
8.5
Mapping a Function Based on Groups
......................113
8.6
The reshape Package
............................>........120
8.7
Loops in
R
.............................................126
9
Reshaping Data
...........................................131
9.1
Modifying Data Frame Variables
..........................131
9.2
Recoding Variables
......................................132
9.3
The
recode
Function
....................................134
9.4
Reshaping Data Frames
..................................135
9.5
The reshape Package
....................................140
9.6
Combining Data Frames
..................................142
9.7
Under the Hood of merge
................................146
Index
..........................................................149
|
| adam_txt |
Contents
Preface
.
V
1
Data
in R
. 1
1.1
Modes and Classes
. 1
1.2
Data Storage in
R
. 2
1.3
Testing for Modes and Classes
. 7
1.4
Structure of
R
Objects
. 7
1.5
Conversion of Objects
. 8
1.6
Missing Values
. 10
1.7
Working with Missing Values
. 10
2
Reading and Writing Data
. 13
2.1
Reading Vectors and Matrices
. 13
2.2
Data Frames: read
.
table
. 15
2.3
Comma- and Tab-Delimited Input Files
. 17
2.4
Fixed-Width Input Files
. 17
2.5
Extracting Data from
R
Objects
. 18
2.6
Connections
. 23
2.7
Reading Large Data Files
. 25
2.8
Generating Data
. 27
2.8.1
Sequences
. 27
2.8.2
Random Numbers
. 29
2.9
Permutations
. 30
2.9.1
Random Permutations
. 30
2.9.2
Enumerating All Permutations
. 30
2.10
Working with Sequences
. 31
2.11
Spreadsheets
. 33
2.11.1
The
R0DBC
Package on Windows
. 33
2.11.2
The gdata Package (All Platforms)
. 34
2.12
Saving and Loading
R
Data Objects
. 35
2.13
Working with Binary Files
. 36
2.14
Writing R Objects to Files in ASCII Format
. 38
2.14.1
The write Function
. 38
2.14.2
The write.table function
. 39
2.15
Reading Data from Other Programs
. 39
R
and Databases
. 43
3.1
A Brief Guide to SQL
. 43
3.1.1
Navigation Commands
. 43
3.1.2
Basics of SQL
. 44
3.1.3
Aggregation
. 45
3.1.4
Joining Two Databases
. 46
3.1.5
Subqueries
. 47
3.1.6
Modifying Database Records
. 48
3.2
ODBC
. 49
3.3
Using the RODBC Package
. 50
3.4
The DBI Package
. 51
3.5
Accessing a MySQL Database
. 51
3.6
Performing Queries
. 52
3.7
Normalized Tables
. 52
3.8
Getting Data into MySQL
. 53
3.9
More Complex Aggregations
. 55
Dates
. 57
4.1
as.Date
. 57
4.2
The chron Package
. 59
4.3
POSIX Classes
. 60
4.4
Working with Dates
. 63
4.5
Time Intervals
. 64
4.6
Time Sequences
. 65
Factors
. 67
5.1
Using Factors
. 67
5.2
Numeric Factors
. 70
5.3
Manipulating Factors
. 70
5.4
Creating Factors from Continuous Variables
. 72
5.5
Factors Based on Dates and Times
. 73
5.6
Interactions
. 74
Subscripting
. 75
6.1
Basics of Subscripting
. 75
6.2
Numeric Subscripts
. 75
6.3
Character Subscripts
. 75
6.4
Logical Subscripts
. 76
6.5
Subscripting Matrices and Arrays
. 77
6.6
Specialized Functions for Matrices
. 81
Contents
IX
6.7
Lists
. 82
6.8
Subscripting Data Frames
. 83
7
Character Manipulation
. 87
7.1
Basics of Character Data
. 87
7.2
Displaying and Concatenating Character Strings
. 87
7.3
Working with Parts of Character Values
. 89
7.4
Regular Expressions in
R
. 90
7.5
Basics of Regular Expressions
. 91
7.6
Breaking Apart Character Values
. 93
7.7
Using Regular Expressions in
R
. 94
7.8
Substitutions and Tagging
. 98
8
Data Aggregation
.101
8.1
table
.101
8.2
Road Map for Aggregation
.106
8.3
Mapping a Function to a Vector or List
.107
8.4
Mapping a function to a matrix or array
.110
8.5
Mapping a Function Based on Groups
.113
8.6
The reshape Package
.>.120
8.7
Loops in
R
.126
9
Reshaping Data
.131
9.1
Modifying Data Frame Variables
.131
9.2
Recoding Variables
.132
9.3
The
recode
Function
.134
9.4
Reshaping Data Frames
.135
9.5
The reshape Package
.140
9.6
Combining Data Frames
.142
9.7
Under the Hood of merge
.146
Index
.149 |
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| author | Spector, Phil 1951- |
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| classification_tum | DAT 368f |
| ctrlnum | (OCoLC)254709653 (DE-599)DNB986702412 |
| dewey-full | 510 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 510 - Mathematics |
| dewey-raw | 510 |
| dewey-search | 510 |
| dewey-sort | 3510 |
| dewey-tens | 510 - Mathematics |
| discipline | Informatik Soziologie Mathematik Wirtschaftswissenschaften |
| discipline_str_mv | Informatik Soziologie Mathematik Wirtschaftswissenschaften |
| format | Book |
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| id | DE-604.BV023290515 |
| illustrated | Not Illustrated |
| index_date | 2024-07-02T20:43:05Z |
| indexdate | 2024-07-09T21:15:05Z |
| institution | BVB |
| isbn | 9780387747309 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-016475136 |
| oclc_num | 254709653 |
| open_access_boolean | |
| owner | DE-N2 DE-91G DE-BY-TUM DE-703 DE-945 DE-384 DE-739 DE-355 DE-BY-UBR DE-11 DE-824 DE-188 DE-20 DE-B768 |
| owner_facet | DE-N2 DE-91G DE-BY-TUM DE-703 DE-945 DE-384 DE-739 DE-355 DE-BY-UBR DE-11 DE-824 DE-188 DE-20 DE-B768 |
| physical | IX, 152 S. |
| publishDate | 2008 |
| publishDateSearch | 2008 |
| publishDateSort | 2008 |
| publisher | Springer |
| record_format | marc |
| series2 | Use R! |
| spelling | Spector, Phil 1951- Verfasser (DE-588)138479925 aut Data manipulation with R Phil Spector New York, NY Springer 2008 IX, 152 S. txt rdacontent n rdamedia nc rdacarrier Use R! Datenanalyse (DE-588)4123037-1 gnd rswk-swf R Programm (DE-588)4705956-4 gnd rswk-swf R Programm (DE-588)4705956-4 s DE-604 Datenanalyse (DE-588)4123037-1 s DE-188 Erscheint auch als Online-Ausgabe 978-0-387-74731-6 Digitalisierung UB Passau application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=016475136&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Spector, Phil 1951- Data manipulation with R Datenanalyse (DE-588)4123037-1 gnd R Programm (DE-588)4705956-4 gnd |
| subject_GND | (DE-588)4123037-1 (DE-588)4705956-4 |
| title | Data manipulation with R |
| title_auth | Data manipulation with R |
| title_exact_search | Data manipulation with R |
| title_exact_search_txtP | Data manipulation with R |
| title_full | Data manipulation with R Phil Spector |
| title_fullStr | Data manipulation with R Phil Spector |
| title_full_unstemmed | Data manipulation with R Phil Spector |
| title_short | Data manipulation with R |
| title_sort | data manipulation with r |
| topic | Datenanalyse (DE-588)4123037-1 gnd R Programm (DE-588)4705956-4 gnd |
| topic_facet | Datenanalyse R Programm |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=016475136&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT spectorphil datamanipulationwithr |