dplyr: Add group aggregates directly to long data frame
7274
Calculate group mean (or other summary stats) and assign to original data
102482
Transpose a data frame
30529
lme4 upgrade produces error message even after grouping variables within the data frame
61000
Easier way to plot the cumulative frequency distribution in ggplot?
109912
PostgreSQL: Generate a series of dates for each group in a table
90890
How do you add a long list of rasters together in Python?
102653
percentage count by group using dplyr
6158
How to resample in R without repeating permutations?
27240
How to mix pairs of rows without JOIN (in a temporary table)?
37373
Reshape three column data frame to matrix ("long" to "wide" format)
33487
R aggregate data in one column based on 2 other columns
71686
Combine a list of data frames into one data frame by row
151542
How does one reorder columns in a data frame?
89743
Split data.frame based on levels of a factor into new data.frames
90603
Dealing with timestamps in R
21016
How to initialize empty data frame (lot of columns at the same time) in R
72432
data.frame without ruining column names