Here’s the updated code with explanations: Step 1: Data Preparation # Read in data df <- read.csv("data.csv") # Split into searches and visits searches <- df %>% filter(Action == "search") %>% select(-Checkin) visits <- df %>% filter(Action == "visit") %>% select(-Action) Step 2: Join Data and Create Variables # Do a left join and create variable of interest searchesAndVisits <- searches %>% left_join(visits, by = "ID", suffix = c("_search", "_visit")) %>% mutate( # Check if checkin is at least 30 seconds condition = (Checkin >= 30) & !

The error message indicates that the lm function from a custom package or personal function is overriding the base lm function. This can be resolved by either restarting R session, removing all packages and functions with the name “lm” (using rm(list = ls())), or explicitly calling the base lm function using base::lm. Here’s an example of how to resolve the issue: # Create a sample data frame data <- data.frame(Sales = rnorm(10), Discount = rnorm(10)) # Custom lm function lm_func <- function(x) { return(0) } # Call the custom lm function, expecting an error lm_func(data$Sales ~ data$Discount, data = data) # Explicitly call the base lm function to avoid the conflict gt <- base::lm(Sales ~ Discount, data = data) Alternatively, you can remove all packages and functions with the name “lm” using rm(list = ls()):

Understanding Navigation Bar Customization in iOS When working with navigation bars in iOS, one common task is customizing their appearance by changing the left bar button item. In this article, we’ll explore a specific scenario where setting the leftBarButtonItem property hides the back arrow button and discuss how to overcome this limitation. Setting Navigation Bar Left Button Items In iOS, navigation controllers provide a convenient way to manage the navigation flow between views.

Assigning Priority Scores Based on Location in a Pandas DataFrame In this article, we will explore how to assign priority scores based on location in a pandas DataFrame. We will cover the problem statement, provide a generic approach using dictionaries and regular expressions, and discuss the code implementation. Problem Statement The problem is as follows: we have a DataFrame with two columns, “Business” and “Location”. The “Location” column can contain multiple locations separated by commas.

Creating a Multindex in Python with Pandas DataFrame In this article, we’ll explore how to append a multindex to an existing pandas DataFrame. We’ll delve into the world of multi-indices and see how they can be used to organize data in a structured manner. Understanding Multi-Indices A multi-index is a way to label rows in a DataFrame that allows for multiple levels of indexing. This can be useful when dealing with data that has multiple variables or dimensions that need to be indexed separately.

Using ggtext to Plot Factor Levels with Superscript Text The ggtext package in R provides a set of functions for customizing text elements in ggplot2 plots. One of the useful features of ggtext is its ability to format text in various ways, including superscript. In this article, we will explore how to use the element_markdown() function from the ggtext package to plot factor levels containing text with superscripts. Introduction In data visualization, labels and annotations are essential for communicating information effectively.

Calculating Work Week based on Next Sunday Logic Introduction As a technical blogger, I’m often asked to tackle tricky problems related to date calculations. One such problem that caught my attention recently was calculating the work week based on the next Sunday logic. In this article, we’ll explore how to achieve this using Microsoft SQL Server 2016 (SP2-CU11). Understanding the Problem The question asks us to calculate the work week starting from the Sunday of the year in which January 1st falls.

Understanding the Problem and Requirements When building an iOS application that requires a secure connection to a server, understanding how to handle RSA public keys is crucial. In this scenario, you’re using the RSA algorithm to create a pair of private and public keys, with the intention of storing the public key within your application on the device. The question arises: where should this public key be stored in the iOS application?

Understanding the Basics of R Programming Language Introduction to R and DataFrames The R programming language is a popular choice for data analysis, visualization, and machine learning tasks. It provides an extensive range of libraries and packages that simplify various tasks, making it an ideal tool for researchers, scientists, and data analysts. In this blog post, we will delve into the world of R programming, focusing on how to print variables with trailing newlines in R.

Understanding Out-of-Bag (OOB) Error in Random Forest Models Introduction Random forest models are a type of ensemble learning method that combines multiple decision trees to improve the accuracy and robustness of predictions. One key concept in evaluating random forest performance is the out-of-bag (OOB) error, which measures the difference between predictions made on unseen data and actual values. In this article, we will delve into the world of OOB errors, explore how to calculate them for random forest models using R, and discuss their significance in model selection.