Publications by Joey Campbell
loopsvfuncs61_demo
suppressPackageStartupMessages(library("tidyverse")) package 㤼㸱tidyverse㤼㸲 was built under R version 3.6.3 suppressPackageStartupMessages(library("stringr")) #The package microbenchmark is used for timing code. suppressPackageStartupMessages(library("microbenchmark")) package 㤼㸱microbenchmark㤼㸲 was built under R version 3.6.3 1...
5388 sym R (2405 sym/22 pcs)
formulas_model_fam66_demo
suppressPackageStartupMessages(library("tidyverse")) package 㤼㸱tidyverse㤼㸲 was built under R version 3.6.3 suppressPackageStartupMessages(library("modelr")) package 㤼㸱modelr㤼㸲 was built under R version 3.6.3 1. What happens if you repeat the analysis of sim2 using a model without an intercept. What happens to the model equation? ...
13308 sym R (2985 sym/28 pcs) 2 img
flights68_demo
suppressPackageStartupMessages(library("tidyverse")) suppressPackageStartupMessages(library("modelr")) suppressPackageStartupMessages(library("lubridate")) suppressPackageStartupMessages(library("broom")) suppressPackageStartupMessages(library("nycflights13")) suppressPackageStartupMessages(library("splines")) This code is copied from the bo...
20972 sym R (10642 sym/23 pcs) 12 img
creating_list_columns69_demo
suppressPackageStartupMessages(library("modelr")) package 㤼㸱modelr㤼㸲 was built under R version 3.6.3 suppressPackageStartupMessages(library("tidyverse")) package 㤼㸱tidyverse㤼㸲 was built under R version 3.6.3 suppressPackageStartupMessages(library("gapminder")) package 㤼㸱gapminder㤼㸲 was built under R version 3.6.3 1. List ...
4030 sym R (1869 sym/25 pcs)
simplifying_listcols70_demo
1. Why might the lengths() function be useful for creating atomic vector columns from list-columns? The lengths() function returns the lengths of each element in a list. It could be useful for testing whether all elements in a list-column are the same length. You could get the maximum length to determine how many atomic vector columns to create. ...
2000 sym
label74_demo
suppressPackageStartupMessages(library("tidyverse")) package 㤼㸱tidyverse㤼㸲 was built under R version 3.6.3 suppressPackageStartupMessages(library("modelr")) package 㤼㸱modelr㤼㸲 was built under R version 3.6.3 suppressPackageStartupMessages(library("lubridate")) 1. Create one plot on the fuel economy data with customized title, sub...
5948 sym R (1693 sym/9 pcs) 4 img
Leaflet
Introduction Leaflet is one of the most popular open-source JavaScript libraries for interactive maps. It’s used by websites ranging from The New York Times and The Washington Post to GitHub and Flickr, as well as GIS specialists like OpenStreetMap, Mapbox, and CartoDB. The Leaflet R package makes it easy to integrate and control Leaflet maps ...
3574 sym R (3856 sym/14 pcs)
Principle Comonents Analysis R Lab
In this lab, we perform PCA on the USArrests data set, which is part of the base R package. The rows of the data set contain the 50 states, in alphabetical order. states=row.names(USArrests )#create states vector as names in USArrests data states #look at it [1] "Alabama" "Alaska" "Arizona" "Arkansas" "California" ...
12267 sym R (3219 sym/31 pcs) 4 img
R Lab: Logistic Regression
The Stock Market Data We will begin by examining some numerical and graphical summaries of the Smarket data, which is part of the ISLR library. This data set consists of percentage returns for the S&P 500 stock index over 1, 250 days, from the beginning of 2001 until the end of 2005. For each date, we have recorded the percentage returns for each...
24447 sym R (5208 sym/45 pcs) 2 img
ISLR Chapter 9 ITSEM HW
In this assignment, we explore the support vector machine (SVM), an approach for classification that was developed in the computer science community in the 1990s and that has grown in popularity since then. SVMs have been shown to perform well in a variety of settings, and are often considered one of the best “out of the box” classifiers Pro...
25801 sym R (9358 sym/94 pcs) 21 img