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FOR BI PROS Tableau
Tableau Extensions Addons Introduction: Synchronized Scrollbars
December 2, 2019
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At this year’s Tableau Conference, I tried to stay on the safe side and show mostly Tableau supported solutions: visualizations on real-time data, Jupyer Notebook like experiences and so on. I had only one exception, my “Tableau Extensions Add-ons” microframework that allowed me to show use cases like synchronized scrolling of dashboard elements, getting and validating […]
FOR BI PROS Tableau
Tableau External Services API: Adding Haskell Expressions as Calculations
November 20, 2019
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We all have our own Tableau Conference habits.  Mine is to participate in the first-day hackathon, build something super cool that nobody understands and in the end win nothing. Tableau 2019 was no exception. Earlier this year, our team won the NYC Tableau Hackathon —  and I had almost nothing to do with it.  My […]
FOR BI PROS Tableau
Scaling out Tableau Extracts – Building a distributed, multi-node MPP Hyper Cluster
August 11, 2019
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Tableau Hyper Database (“Extract”) is a great engine; it’s one of the reasons people obsessed with Tableau analytics. However, being a single node database server, it has its limits (performance and data size) – that we are going to break in this blog post. With adding multi-node capacity, partitioning and distributed query processing Hyper will […]
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Python Experiments in Tableau 1. – Add live currency conversion to Tableau Dashboards using TabPy
January 9, 2018
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In a new series of blog posts, what I creatively named as “Python Experiments in Tableau”, I will share a few projects that we are doing in-house to play with Python and Tableau. In the first example we will do something special with the “External Services” functionality: add live data from web services to implement up […]
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HOWTO: Tableau Server Linux in Docker Container
November 2, 2017
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We are all excited about the great news that Tableau will release its Server version on Linux. Even if I’ve been testing the linux build for a while now, since this feature is currently in Beta I can start sharing tips and tricks that will make others’ (yours perhaps) lives easier. The first is an […]
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Tableau Filestore Consistency Checker – How Repository Maps to Filestore
August 17, 2017
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Somewhere around the end of July I was invited to show some magic from our consultancy portfolio in the Server Admin User Group’s virtual meetup. I choose (no, actually Mark choose) two topics: the first was automated query banding (practically server side search and replace to programmatically fill initial sqls for workbooks and data sources) while […]
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Pushing the Limits of Tableau Server – Practical Lessons from a Zen Master
June 6, 2017
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  Today I had the honour to present at the Tableau On Tour London conference. The main focus was the “web data connector trick” that allows one to implement reusable server plugins, explained here in details. You can find my slides and source codes below:
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Tableau Performance: Why Embedded Data Source is Faster than Published
April 16, 2017
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It started with one of my colleague who managed a Tableau case from our end. His client was constantly dissatisfied: her workbooks were significantly faster with embedded data sources compared to published ones. Even if we told her that this is normal, this is the way how life works, so better accept it and let […]
FOR ANALYSTS FOR BI PROS FOR EVERYONE LEARN Tableau
Auto refresh a Tableau Dashboard without Embedding
March 21, 2017
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I was casually sitting at my desk writing my first ever blog entry here when Tamás Földi walked past my desk. He asked me how much I know about Tableau and JavaScript, because he has a cool idea which he didn’t really manage to find the time to implement yet. He quickly briefed me into […]
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Spotfire’s hidden Developer Tools menu
March 13, 2017
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 Starting from version 7.5 Spotfire is using Chromium Embedded Framework as a display engine which comes with the well-known Chrome-style Developer Tools. Why is this so great you might ask? There are a couple of good tricks you can do with this one. Guest blog post by Norbert Ledenyi

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