One of the first functions a new R user learns how to use is the lm() command, which involves stating the model formula.lm(y~x1+x2, data=mydata)After a while, this just becomes a natural way to say "I want a regression of y on x1 and x2 using mydata." ...
Blog Archives
Automatically Save Your Plots to a Folder
Suppose you're working on a problem that involves a loop for calculations. At each iteration inside the loop, you want to construct a plot. Not only do you want to see the plot, but you would like to save each plot for a presentation, report or paper...
Automatically Save Your Plots to a Folder
Suppose you're working on a problem that involves a loop for calculations. At each iteration inside the loop, you want to construct a plot. Not only do you want to see the plot, but you would like to save each plot for a presentation, report or paper...
R Bloggers
I recently found a great resource for R in the blogosphere, the R Bloggers Blog Aggregator. Basically, the site aggregates posts from a bunch of blogs about R (like this one!) into a giant feed of uses for R. If you are interested in learning more ab...
R Bloggers
I recently found a great resource for R in the blogosphere, the R Bloggers Blog Aggregator. Basically, the site aggregates posts from a bunch of blogs about R (like this one!) into a giant feed of uses for R. If you are interested in learning more ab...
Merging Data Video Tutorial
Here's a video tutorial where I walk through some code that does what the previous post describes.The FRED data is used extensively for macroeconomics. You might these data useful for joining in graph fights in the blogosphere.
Merging Data Video Tutorial
Here's a video tutorial where I walk through some code that does what the previous post describes.The FRED data is used extensively for macroeconomics. You might these data useful for joining in graph fights in the blogosphere.
Merging Multiple Data Files into One Data Frame
We often encounter situations where we have data in multiple files, at different frequencies and on different subsets of observations, but we would like to match them to one another as completely and systematically as possible. In R, the merge() comma...
Merging Multiple Data Files into One Data Frame
We often encounter situations where we have data in multiple files, at different frequencies and on different subsets of observations, but we would like to match them to one another as completely and systematically as possible. In R, the merge() comma...
Dates in R and the First Day of the Month
I spent some time this morning learning about how R thinks about dates in R. I found this website to be a useful guide.Imagine that your data are dates in a standard format and you want a vector o...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
