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Questions tagged r

1149 questions · page 14 of 23

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28
votes
5
answers

Creating arbitrary panes in ggplot2

r ggplot2
asked 2011-11-03T10:58:32.340
25
votes
4
answers

Adding a column of means by group to original data

r dataframe
asked 2011-11-02T05:03:30.920
386
votes
16
answers

Extracting the last n characters from a string in R

r string substring
asked 2011-11-01T08:11:19.490
11
votes
1
answers

Splitting a data.table with the by-operator: functions that return numeric values and/or NAs fail

r data.table
asked 2011-10-31T23:01:36.820
8
votes
2
answers

Why does loading cached objects increase the memory consumption drastically when computing them will not?

performance r caching memory
asked 2011-10-31T16:26:52.480
14
votes
3
answers

non-joins with data.tables

r data.table
asked 2011-10-27T18:39:39.470
10
votes
2
answers

Do I need to reshape this wide data to effectively use ggplot2?

r ggplot2
asked 2011-10-27T00:49:00.270
8
votes
4
answers

tapply on matrices of data and indices

r
asked 2011-10-26T21:40:28.133
14
votes
1
answers

How does setTimeLimit work in R?

r timer
asked 2011-10-26T13:44:21.443
8
votes
2
answers

Adding all elements of two lists

r
asked 2011-10-26T13:31:19.480
57
votes
1
answers

Interpolate product attributes

r
asked 2011-10-26T04:50:41.690
66
votes
4
answers

Rearrange dataframe to a table, the opposite of "melt"

r dataframe reshape
asked 2011-10-19T20:37:40.740
9
votes
4
answers

How to get a numbered list renumbering when a value changes

r dataframe
asked 2011-10-18T19:25:09.670
28
votes
2
answers

How to not display number as exponent?

r
asked 2011-10-18T15:45:53.343
9
votes
3
answers

How to convert row names of table into a vector

r
asked 2011-10-18T00:18:37.360
8
votes
2
answers

Data type error with scan

r
asked 2011-10-17T17:36:44.897
103
votes
6
answers

unique() for more than one variable

r unique
asked 2011-10-17T07:45:00.430
60
votes
8
answers

Seeing if data is normally distributed in R

r normal-distribution
asked 2011-10-16T01:35:33.130
14
votes
6
answers

Clear startup screen in R / RStudio

r rstudio
asked 2011-10-14T17:55:11.447
12
votes
5
answers

rworldmap package countrylist

r rworldmap
asked 2011-10-14T11:00:14.083
72
votes
2
answers

Merge data frames based on rownames in R

r merge dataframe
asked 2011-10-12T11:46:31.327
69
votes
2
answers

How R formats POSIXct with fractional seconds

r posixct
asked 2011-10-11T12:29:23.547
246
votes
8
answers

Remove NA values from a vector

r na r-faq
asked 2011-10-09T22:08:07.370
8
votes
2
answers

Approximate lookup in R

r lookup
asked 2011-10-09T12:38:24.867
10
votes
3
answers

Why does mapply not return date-objects?

r
asked 2011-10-08T18:17:49.417
11
votes
3
answers

Creating a 3D histogram with R

r histogram
asked 2011-10-07T07:34:38.113
42
votes
1
answers

Execute two commands sequentially on one line in R?

r syntax command
asked 2011-10-05T14:41:48.267
11
votes
2
answers

Is it possible to update a lattice panel in R?

r plot lattice
asked 2011-10-04T14:47:23.183
18
votes
2
answers

R ggplot2 plotting hourly data

r ggplot2
asked 2011-10-03T14:57:13.500
13
votes
1
answers

How do I replace the string exactly using gsub()

r nlp
asked 2011-10-02T15:11:53.707
46
votes
7
answers

Getting a row from a data frame as a vector in R

r
asked 2011-09-30T19:58:48.137
10
votes
3
answers

Generating a time series with a specific start and end date

r date time range
asked 2011-09-29T09:53:38.577
30
votes
6
answers

Calculating cumulative sum for each row

r
asked 2011-09-26T03:25:46.793
51
votes
1
answers

One function to detect NaN, NA, Inf, -Inf, etc.?

r nan na r-faq
asked 2011-09-22T16:30:03.003
93
votes
4
answers

Elegant indexing up to end of vector/matrix

r matrix dataframe indexing
asked 2011-09-21T13:33:21.953
20
votes
1
answers

How to access the help/documentation .rd source files in R?

r rd
asked 2011-09-21T06:53:38.990
15
votes
4
answers

Draw a chronological timeline with ggplot2

r ggplot2 visualization
asked 2011-09-20T21:56:01.100
40
votes
6
answers

How to step through an R script from the beginning?

debugging r
asked 2011-09-20T13:59:08.117
11
votes
4
answers

Subtly different behaviour between with() and attach() in R?

r
asked 2011-09-20T13:24:11.060
43
votes
5
answers

Can you make R print more detailed error messages?

r error-handling
asked 2011-09-20T12:56:33.350
14
votes
4
answers

Convert (print) a file to PDF - using R? (in windows)

html r pdf
asked 2011-09-20T07:55:19.917
26
votes
6
answers

Python or awk/sed for cleaning data

python r awk sed data-cleaning
asked 2011-09-20T03:13:41.483
37
votes
2
answers

geom_point() and geom_line() for multiple datasets on same graph in ggplot2

r ggplot2
asked 2011-09-19T19:08:26.800
67
votes
12
answers

Count number of rows per group and add result to original data frame

r count aggregate r-faq
asked 2011-09-16T21:33:04.617
12
votes
3
answers

How can I visualize hierarchical data?

r graph visualization hierarchical-data ggplot2
asked 2011-09-16T06:12:43.250
30
votes
5
answers

Disable/suppress tcltk popup for CRAN mirror selection in R

r user-interface popup x11 cran
asked 2011-09-15T11:59:39.463
23
votes
1
answers

How to query axis limits in R?

r plot
asked 2011-09-15T09:21:30.267
12
votes
2
answers

Export UTF-8 BOM to .csv in R

r utf-8 byte-order-mark export-to-csv
asked 2011-09-13T13:02:08.260
49
votes
5
answers

How to apply function over each matrix element's indices

r function dictionary matrix apply
asked 2011-09-12T23:58:12.113
10
votes
4
answers

How can I read multiple files from multiple directories into R for processing?

r batch-file
asked 2011-09-11T05:34:58.830
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