Annie Lyu

Annie Lyu

PhD candidate in Statistics

Iowa State University


I am a PhD candidate in Statistics at Iowa State University. My major professors are Dr. Heike Hofmann and Dr. Emily Berg. I consulted and contributed to several customer-facing R Shiny applications. I enjoy programming, photographing and dessert-making.


  • Data Visualization
  • Statistical Learning
  • Pastry and Photography


  • PhD in Statistics, 2020

    Iowa State University

  • BSc in Statistics, 2015

    Wuhan University



Visualization Analyst Intern


May 2019 – Aug 2019 San Francisco, California
Develop machine learning models and dashboards in the business analytics team.

Graduate Research Assistant - Statistics

Iowa State University

Aug 2015 – Present Ames, Iowa
Develop statistical methodology and visualization tools at the Center of Survey Statistics and Methodology.

Recent Posts

VISCOVER is now featured in the RStudio Shiny Gallery!

I am so happy to share the news that my R Shiny app viscover is now featured in the RStudio Shiny Gallery. 🎉 🎉 🎉 It's categorized into the Public Sector section in the Gallery due to its application to the soil survey data and cropland data layer maintained by the USDA. viscover takes its name from VIsulizing Soil and Crop data and their OVERlay. Although my motivation to develop

Fun blogdown in R to design a personal website

Inspired by David Robinson‘s keynote talk at the RStudio conference 2019 (summary in the following tweet), I decided to write a post about how I use Yihui‘s fantastic R package blogdown to develop my own personal website. When you’ve written the same code 3 times, write a function When you’ve given the same in-person advice 3 times, write a blog post — David Robinson (@drob) November 9, 2017 Well, there are a lot of useful references to check out.

Fun Leaflet in R with NYC Squirrel Census Data

Anabelle introduced the NYC Squirrel Census data to me today. It also comes from the recommended dataset of #TidyTusday. Both of us adore squirrels 😍. The dataset contains variables which can tell when (Date) and where (longitude X and latitude Y) people saw a squirrel of certain age (Age) and fur color (Primary Fur Color) conducting some activities (Running, Climbing, Chasing, Eating, Foraging or Other Activities). Having some experience working with leaflet in R, I find it very interesting to visualize this data set on an interactive map.


个人网站上的第一篇中文博客献给值得纪念的2019年暑假, 响应谢老大的号召,我网故我在。 一个人的七天欧洲之旅 因为参加一个国际会议,我短暂拜访了

Showcase my home-made dessert

🍰 🍰 🍰 dessert


viscover: visualize soil and crop data and their overlay

Designed to interact with USDA-NASS Cropland Data Layer and USDA-NRCS Soil Survey Data. Featured in the RStudio Shiny gallery.

iNtr: an interactive NRI table review tool

Designed to check National Resources Inventory estimates.

ISA On-Farm Trial Summarization Tool

Designed for farmers at the Iowa Soybean Association to explore on-farm trial summaries, access model outputs and perform economic analysis.

Iowa DNR MSIM - SGCN Modeling

Designed to interact with the predictive occupancy map for endangered wild species monitored by the Iowa Department of Natural Resources.

Systematic Sampling Example

An example for STAT421 (Survey Statistics) Lab05.

Recent & Upcoming Talks

Create a personal website with Blogdown like what we did

A personal website is an incomparable platform for building your online profile and showcasing your amazing work (research or other …

Empirical Bayes small area prediction under a zero-inflated lognormal model with correlated random effects

Many variables of interest in agricultural or economical surveys have skewed distributions and can be contaminated with a …

Applications of R Shiny to Explore, Evaluate and Improve Total Survey Quality

Maintaining and assessing total survey quality on a large scale and complex survey such as the National Resource Inventory (NRI) often …

Progress Report: Visualization of Sheet and Rill Erosion on US Cropland

National Resource Inventory (NRI) is a longitudinal survey which monitors national resources on non-federal US land. It provides annual …

Empirical Bayes Small Area Prediction of Sheet and Rill Erosion Using a Zero-Inflated Lognormal Model

In the Conservation Effects Assessment Project (CEAP), some of the variables are skewed right and have zeros. We proposed an empirical …


  • 1215 Snedecor Hall, Ames, IA 50011