Blog – Harvey Lieberman

Porting to Quarto

Quarto

Porting the site from Hugo to Quarto

gt Extensions

R

Adding Additional Functionality to the gt Package

New Year Fun with Quarto

Quarto

A New Year’s balloon pop updated using Quarto.

Testing for a Float in a Vector

R

How to check if a floating point is in a Vector

Building Dynamic Nested Loops in R

R

Building Dynamic Nested Loops in R - an exercise in recursion to retain a nested structure

Selectable Groups in Plotly

R

Shiny

How to build a series of selectable groups in Plotly

Fun With R6 Classes

R

child R6 classes that update a parent

Resizable bslib Cards

R

Shiny

bslib dashboards with resizable cards

Toggling Error Bars in Plotly

R

Shiny

adding buttons to turn error bars on and off

Passing and R6 Class to Quarto

R

Quarto

How to pass an R6 class to Quarto as a parameter

Building a Quarto Extension

Quarto

First attempt at building a Quarto extension

Adding to a sortable bucketlist

R

Shiny

Dynamically updating a sortable bucketlist upon adding a new element

Serverless shiny app embedded in a Quarto Website

R

Shiny

Quarto

Serverless shiny app embedded in a Quarto Website

Internal labels in textInput box

R

Shiny

Moving a shiny textInput label to inside the textbox

Shiny Frameworks 04 - Importing Data

R

Shiny

Shiny Framework

Shiny Frameworks 04 - Importing Data

Shiny Frameworks 03 - A Simple Interpreter

R

Shiny

Shiny Framework

Shiny Frameworks 03 - A Simple Interpreter

Shiny Frameworks 02 - Instructions and Parsing

R

Shiny

Shiny Framework

Opinion

Shiny Frameworks 02 - Instructions and Parsing

Shiny Frameworks 01 - Introduction

R

Shiny

Shiny Framework

Opinion

Shiny Frameworks 01 - Introduction

Ordering Pre-selected Items in selectizeInput

R

Shiny

Maintaining the order of pre-selected items in selectizeInput

plumber API as a package

R

Plumber

RSConnect

Building a plumber API as an R package

Running SAS in Quarto. Part 2

Quarto

Python

Running SAS in Quarto. Part 2

Running SAS in Quarto. Part 1

Quarto

Python

Running SAS in Quarto. Part 1

Adding and Retrieving metadata in RMarkdown Documents

R

RMarkdown

Include abitrary metadata in RMarkdown documents

Adding Metadata to R Functions

R

Three ways to embed metadata in R functions

knitr::knit_child with Quarto

RMarkdown

Quarto

knitr::knit_child with Quarto

{distill} Comments With Replies

R

Javascript

RSConnect

Including a comments (plus replies) section in {distill} pages

{distill} Comments

R

Javascript

RSConnect

Including a comments section in {distill} pages

Shiny hot reload

R

Shiny

Hot reload when working with a parameter file

Shiny dynamic tabs

R

Shiny

Extend and reduce tab count in shiny app

Embedding {learnr} in {distill}

R

How to share a {learnr} lesson within a {distill} website page

Multiwindow App - RStudio Connect and pins

R

Shiny

Javascript

RSConnect

Building a multiwindow shiny app running on RStudio Connect with pins

Connecting shiny modules through R6

R

Shiny

Shiny Modules

Using an R6 class to share data between multiple shiny modules

{distill} Contact Form

R

Javascript

RSConnect

Including a contact form on a {distill} site

Multiwindow App

R

Shiny

Javascript

Building a multiwindow shiny app

Using tidyselect in your own package

R

Using tidyselect in your own package

Implementing magrittr

R

Using the magrittr pipe in your own package

Passing a Mixture of Reactive and Non-Reactives to a Shiny Module

R

Shiny

Shiny Modules

Passing a Mixture of Reactive and Non-Reactives to a Shiny Module

Shiny Reactivity

R

Shiny

Shiny Modules

List of Reactives vs Reactive List

Beer Trip Around the World

R

Traveling Salesman Problem between breweries

Emailing under Windows using R

R

Using vbs scripting to email from R

A Switch to Hugo

Opinion

From Jekyll to Hugo

Checking internal consistency of CAS numbers

R

Chemistry

Checking internal consistency of CAS numbers

CAS from pdf

R

Chemistry

Extracting CAS numbers from a PDF

Towards Lab IoT Part Two

Python

IoT

Moving towards IoT in a lab (part two - python test)

Towards Lab IoT Part One

IoT

Moving towards IoT in a lab (part one - installing and command-line testing)

Star Checkbutton

R

Shiny

Icon star as a checkbox in a shiny app

Extracting data from LCMS PDF

R

Chemistry

Extracting data from Agilent LCMS PDF

Setting up Shiny Apps - An Opinionated View

R

Shiny

How I like to set up shiny apps on a single server

visNetwork Continuous Colors

R

Building a visNetwork graph with a continuous color-coded fill

Alerts in Chrome and IE

R

Shiny

Javascript

Displaying Browser-Dependent alerts in Shiny Apps

Formattable - color data according to RSD

R

How to color a formattable table using data from another source. This is useful in coloring a table of averages according to RSD

Stopping a crashed RStudio Server Instance

R

Finding and Stopping a Crashed Linux RStudio Server Instance

Shiny app startup options

R

Shiny

Startup a shiny app with options in interactive or server mode

Mimic Button Press with Enter Key

R

Shiny

Javascript

Minic a button press with the Enter key

Restarting a Shiny App

R

Shiny

Forcing a shiny app restart

Datatable Callback in Shiny Module

R

Shiny

Shiny Modules

Datatable Callback in Shiny Module

cron, python and slack - a beautiful combination

Python

Tracking Fantasy Football injuries using cron, python and slack

Using CSS Variables with Shiny

R

Shiny

Javascript

How to change a CSS variable in a shiny app

Interrupting a background process: asynchronous shiny

R

Shiny

How to Interrupt a long-running background process in Shiny

R 3.5.0 Package Update

R

Working with user and system libraries in R

Using Redmine with RStudio

R

Integrating Redmine in RStudio

Code instead of Spreadsheet

Opinion

Why can’t we break the Spreadsheet mold in Science?

Plotly Error Bar Hack

R

Shiny

Hack to fix error bar issue when using plotly

Fancy Headers in Automated Reports

R

RMarkdown

Creating a fancy header in an automated markdown report

KEGG and neo4j

Neo4j

Importing the KEGG database into neo4j

SQL Server

R

Connecting to a SQL Server database

parallel dplyr

R

Multidplyr - A parallel version of dplyr

Shiny Background Process

R

Shiny

Running a background process under Shiny

queryBuilder

R

Shiny

An htmlwidget for jQuery QueryBuilder

RStudio Connect and Databases

R

RSConnect

Accessing a shared space from RStudio Connect

ChemSymWords

R

Chemistry

Building words using chemical symbols

Rapid ANOVA p-value Calculation

R

Fast calculation of multiple p-values

Datatable Embedded Tables

R

Javascript

Embedding subtables in datatables

In The Cloud

Opinion

I’m now totally cloud-based

Split-Apply-Combine

R

A complex split-apply-combine procedure run three different ways

Monitoring Fantasy Football Transfers

R

Let me know when there’s an update to the Fantasy Premierleague Player List

Managing Users

R

Shiny

Managing users in a Shiny App

Fantasy football

R

Optimizing a fantasy football team

Sortable Tables

R

Shiny

Javascript

Sorting rows in a datatable

R-Notebooks Collapse Button

R

Adding an open/collapse button to an R Notebook

Scraping for Dishwashers

R

Scraping Home Depot to gather dishwasher information (using rvest)

Why blog? Why now?

Opinion

Why am I starting to blog now?