A Compendium Of R Errors

Kevin Feasel

2017-11-15

R

Sumendar Karupakala has a bunch of errors you might find in R, as well as their explanations and fixes:

#pull out the animals which are dogs
animaldata[animaldata$Animal.Type == “Dog” ] # throuws an error
Error in `[.data.frame`(animaldata, animaldata$Animal.Type == “Dog”): undefined columns selected
Traceback:
1. animaldata[animaldata$Animal.Type == “Dog”]
2. `[.data.frame`(animaldata, animaldata$Animal.Type == “Dog”)
3. stop(“undefined columns selected”)
In [8]:
#fixed error
animaldata[animaldata$Animal.Type == “Dog”, ] # missedout comma with in the bracket

Some of it is basic syntax; others are a bit nastier.

Related Posts

Probabilities And Poker

Steve Miller has a notebook on 5-card draw probabilities: The population of 5 card draw hands, consisting of 52 choose 5 or 2598960 elements, is pretty straightforward both mathematically and statistically. So of course ever the geek, I just had to attempt to show her how probability and statistics converge. In addition to explaining the […]

Read More

Principal Component Analysis With Stack Overflow Data

Julia Silge explains Principal Component Analysis and shows us an example using Stack Overflow data: We have tidy data, both because that’s what I get when querying our databases and because it is useful for exploratory data analysis when preparing for a machine learning algorithm like PCA. To implement PCA, we need a matrix, and […]

Read More

Categories

November 2017
MTWTFSS
« Oct Dec »
 12345
6789101112
13141516171819
20212223242526
27282930