I have a data frame, like so: data.frame(director = c("Aaron Blaise,Bob Walker", "Akira Kurosawa", "Alan J. Pakula", "Alan Parker", "Alejandro Amenabar", "Alejandro Gonzalez ...
I want to look at the source code for a function to see how it works. I know I can print a function by typing its name at the prompt: > t function (x) UseMethod("t") <bytecode: 0x2332948> &...
I tried to install a package, using install.packages("foobarbaz") but received the warning Warning message: package 'foobarbaz' is not available (for R version x.y.z) Why doesn't R think that th...
I wish to order a data frame based on different columns, one at a turn. I have a character vector with the relevant column names on which the order should be based: parameter <- c("market_value_LO...
I have a list of many data.frames that I want to merge. The issue here is that each data.frame differs in terms of the number of rows and columns, but they all share the key variables (which I've call...
I am trying to make a bar graph where the largest bar would be nearest to the y axis and the shortest bar would be furthest. So this is kind of like the Table I have Name Position 1 James Go...
From a data frame, is there a easy way to aggregate (i.e. sum) multiple variables simultaneously? Below are some sample data: library(lubridate) days = 365*2 date = seq(as.Date("2000-01-01"), length...
I have very large tables (30 million rows) that I would like to load as a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementati...
I'd like to take data of the form before = data.frame(attr = c(1,30,4,6), type=c('foo_and_bar','foo_and_bar_2')) attr type 1 1 foo_and_bar 2 30 foo_and_bar_2 3 4 foo_and_bar 4 ...
I need to plot a bar chart showing counts and a line chart showing rate all in one chart, I can do both of them separately, but when I put them together, I scale of the first layer (i.e. the geom_bar)...