The final topic in Filtering addresses when and when not to use user filters and how it can slow down your visualization: "Don’t be lazy with user filters. Security by user filters can impact performance on Tableau Server as the server cannot share connections and query...
Keeping track of the growing number and types of database products is a full-time chore. This week I spent a few days in Vail, Colorado at the Pacific Crest Global Technology Forum. This is the 17th year that Pacific Crest Securities has sponsored the event—bringing...
I’ve been aware of Juice since before my days as a consultant. Around 2007, I found Juice Analytics because they were serving-up some very useful blog posts on data visualization before it was a household word. In particular, I loved an Excel add-on they had called the Chart...
Somehow, I didn’t actually meet Anya in person until the conference in Washington, D.C., a few years ago. I knew of her and her work with Tableau well before then. Her personality in her blog posts is consistent with her personality in person. She is...
We’ll continue on with the next item in the Filtering category: "Replace quick filters showing 'Only Relevant Values' and high count of quick filters with dashboard filter actions. They will cascade as your user interacts, and they perform faster." Cascading filters? Sounds exciting! I Got 99 Problems … As we...
The next guideline in our list of Filtering tips is: "Keep range quick filters simple. The more complex the range, the slower the query." Sound exciting? Let’s go! Quick Filter Overview Quick filters are a quick and easy way to add interactivity to your visualization or your dashboard, either...
The next item in our Filtering checklist is: "Avoid quick filters or actions that drive context filters. These require reloading the context table and should be avoided wherever possible." There’s a lot to digest there, so let’s get started. What Is a Context Filter? The filters that you add...
The next item in our Filtering checklist is: "Avoid high-cardinality quick filters (multi-select or drop-down lists). High-cardinality quick filters are slow to load and render." Let’s jump right in and see how high cardinality in your quick filters can negatively impact performance. What is Cardinality? In SQL, the cardinality...
One of my biggest fears when going on a long bike ride is running out of fuel and bonking (a.k.a hitting a wall). It’s a horrible feeling. Your legs feel like jelly, and it seems as if one more rotation of the pedals is impossible....
Every day, we are flooded with data visualizations. Whether it’s a bar chart in a newspaper, an infographic you see online or a pie chart you see in a quarterly earnings report, people are turning numbers into pictures all around us. For those of us...
Speed counts, people! Today’s report consumers expect their dashboards to run as fast as a web page. Now that high speed internet is the standard in business, that’s a lot to compete with. This is why it is essential to optimize each and every dashboard...
In some of my recent posts, I’ve talked (and visualized) about some of the reasons why I love the Tableau community. My first post about the topic was a “thank you” to the Tableau community in general while my second post analyzed community member stats. Continuing...
I met Mike through Twitter some time in 2009. Mike was active in the Tableau community, connecting people from all over the world and answering questions on the Tableau Forums. I did a gig in Ohio in the spring and decided to detour to Cincinnati...
I met Behfar for the first time around 2005. At the time, I was the CFO/CIO for a mid-sized global manufacturing and distribution business. We has just finished divesting our parent company, and most of my team and I had to find technology partners that...
When I build Tableau workbooks, I like to create quick table calculations (such as percent of total) and save those as a calculated field in the Data pane. That way, I don’t have to create that table calculation again if I want to use it...
If you’ve spent any time using Alteryx by now, you probably have a directory full of useful modules. One of the greatest features about Alteryx is that once you have created and tested a module, you can turn that module into a macro or an...
I met Gregory Lewandowski (aka @lewandog) at the second Tableau Customer Conference. He was wearing this gangster/jazzy fedora, and when I asked him were he got it his answer was that he “knew a guy.” Gregory comes from big-company technology. He works at Cisco and knows...
I haven't had a ton of time to really dig into the new features of Tableau 9, but I did want to start playing with the new Level of Detail (LOD) calculations to see what they could do. The result is simple yet entertaining. The...
PART 2 In part one we familiarised with Tableau's automatic Trend Line, information provided and inferences possible. Now I want to focus on the fun part: how to calculate the trend line ourselves using Tableau-R integration as well as two applied examples "How much above/below ?" and "What if"....
So let’s fast forward the early bits. Degree in Mathematics and Computer Science, worked for Fidelity Investments as an out of uni job blah blah. Then things started to get a lot more interesting. I started a fledgling engineering business which quickly warped and twisted its...
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