Publications by Laura Ellis
Predictive Analytics Tutorial: Part 1
Tutorial 1: Define the Problem and Set UpTutorial 2: Exploratory Data Analysis (EDA)Tutorial 3: TransformTutorial 4: Model, Assess and ImplementSteps to Predictive Analytics ModellingAs you may have seen from my previous blog, predictive analytics is on the move to mainstream adoption. This exciting change means that we are tr...
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Predictive Analytics Tutorial: Part 4
Back – Predictive Analytics Tutorial: Part 3 Tutorial 1: Define the Problem and Set UpTutorial 2: Exploratory Data Analysis (EDA)Tutorial 3: TransformTutorial 4: Model, Assess and ImplementWelcome Back!Great job, you’ve made it to part 4 of this 4-part tutorial series on predictive analytics! The goal of this tutorial is ...
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Happy Holidays Data Lovers!
Warmest seasons greetings to all of my fellow data nerds!Like myself, I know that a lot of you love pretty visualizations. So, this Christmas I am giving the small gift of a new R package to explore. I will be providing a more in-depth example in the next few weeks. In the meantime, below is a teaser. Run this code in any R environment, in...
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Analysis on Google’s Best Apps of 2017 List
As we are fast approaching the end of the year, “Best of 2017” lists are being released. I had a look at Google’s “Best Apps of 2017” list and I like their arrangement of picking the top 5 apps by categories such as “Best Social”, “Most Innovative” etc. However, I found myself wishing I could dive deeper. I wanted to exam...
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Data Day Texas 2018 in Review
As the hubbub from Data Day Texas winds down, I thought I would take some time to share a few thoughts on the conference. Being a relatively new Austinite (imported from Canada), this is only my second Data Day. And while I’m still getting a feel for the typical Data Day vibe, there was a noticeable shift this year to to support new member...
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R Package Install Troubleshooting
One of the reasons why I love R is that I feel like I’m constantly finding out about cool new packages through an ever-growing community of users and teachers. To understand the current state of R packages on CRAN, I ran some code provided by Gergely Daróczi on Github . As of today there have been almost 14,000 R packages published on CRAN...
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Graphing My Feelings
I am so pumped to show off a cool new tool which I learned about through Mara Averick’s Twitter feed. This is a tool called coordinator, created by Aliza Aufrichtig and allows us to convert SVG graphics to data co-ordinates!! Do you know what this means? We can now use our data skills to create even more fun graphs! I’m talking next ...
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Time Based Heatmaps in R
Recently I’ve been very into the idea of time-based heatmaps as an easy way of understanding relative aggregates by date and time. I think it’s important to view behavior by time as the numbers are often very different when looking across time intervals such as year, month, day of the week, hour etc. For example, US consumers shopping pat...
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Map Plots Created With R And Ggmap
In my previous tutorial we created heatmaps of Seattle 911 call volume by various time periods and groupings. The analysis was based on a dataset which provides Seattle 911 call metadata. It’s available as part of the data.gov open data project. The results were really neat, but it got me thinking – we have latitude and longitude wi...
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Summertime Fun: R Graphs with LaCroixColoR, Magick Animations + More!
Now that we are back from the Memorial day long weekend, does anyone else feel like we’ve kicked off summer? I know that summer doesn’t begin officially until June 21, but I am already in the spirit. It might seem strange to “be in the spirit” since I’m living in Austin, Texas and we get temperatures up to 95-99 degrees Fahrenheit (...
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