In forensic handwriting applications practitioners are interested in matching a document with an unknown author with a particular person’s writing style. In order for this to be done computationally it is necessary to first process the documents and try to isolate information in the messy documents. Starting with just blobs of ink, we will isolate important characteristics and start to make steps towards having something usable for performing analyses. This talk will introduce a Shiny app that shows off some of the handwriting processing, and will delve into the Rcpp code that makes it go.
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In this talk, I will show you how to create a professional academic homepage (or blog) from scratch using the R package ‘blogdown’. I will first introduce some basic concepts of web construction and some essential tools (‘rmarkdown’ and ‘git/github’) that will be used in building websites with ‘blogdown’. Then I will illustrate how to build a website step by step. By the end of the meeting, you are expected to have your own homepage created!
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Calendars are broadly used in society to display temporal information, and events. This paper describes a new R package with functionality to organize and display temporal data, collected on sub-daily resolution, into a calendar layout. The function frame_calendar uses linear algebra on the date variable to restructure data into a format lending itself to calendar layouts. The user can apply the grammar of graphics to create plots inside each calendar cell, and thus the displays synchronize neatly with ggplot2 graphics.
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At the turn of the 19th century, there seemed to have been a sudden interest in the United States in visualizing census data. There are some pretty amazing plots from this time in “The Statistical Atlas of the United States” and in the collection “African American Photographs Assembled for 1900 Paris Exposition” by W.E.B. Du Bois. In this talk, I’ll walk through the process of recreating a small sample of these visualizations using the NHGIS data finder and modern statistical computing tools.
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title: “Truthiness: Going with your gut” author: Susan VanderPlas date: ‘2019-02-15’ slug: truthiness categories: [] tags: [] —
Graphics are incredibly useful information conduits, but what effects do extraneous graphics have on someone’s ability to evaluate factual statements? In this talk, I’ll discuss the “truthiness effect” and talk about what pictures and charts have to do with Stephen Colbert and science communication. I’ll discuss results from two cognitive psychology studies detailing the truthiness effect and some initial data from a study I’m conducting to explore whether this effect extends to statistical charts and graphics.
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