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## Robbin Vernooij

Collecting, processing and making sense out of data have been at the centre point of Robbin’s interest ever since starting university in his home country, the Netherlands. Pursuing a joint-PhD in chemotherapeutics at Monash (AUS) & Warwick (UK), big data sets came in daily, for breakfast, lunch and dinner. Keen to translate and present complex data sets for everyone to understand is one of the things he enjoys doing most.

Being exposed to Alteryx and Tableau opened up a whole new world of streamlined data processing, which was often missing at during his previous roles. The Data School will be an amazing new challenge in order to continue to fast-track his experience in big data science.

Apart from data, Robbin has a passion for rugby, as a previous player/team manager/coach and nowadays; supporter, as well as motorbikes.

## How to Create a Blended Dual Axis in Tableau

A quick walkthrough on how to create combine a blended axis into a dual axis in Tableau. Last week I came across a #WorkoutWednesday Challenge from 2017 (week 35), which required me to combine a Blended axis with a dual axis, allowing you to visualise three measures...

## Tableau Modulo operator and its use in dividing your sheet into multiple grids

A brief intro to the Modulo operator and how it can help you split up your sheet into small multiple grids (trellis) without loosing your rank order. Today at the data school, we worked through old #WorkoutWednesday exercises to further enhance our Tableau skills. I...

## Principal Component Analysis, an Alteryx Example and a Penguin

A quick introduction into principal component analysis (PCA) and a small data set example. More and more data is being collected in various types of disciplines (science, engineering, marketing, environment, politics,etc). Extracting correlations or trends from these...

## Tableau: a quick way to Sort by a Measure with multiple Dimensions in your View

A quick Tableau tip on how to sort to a measure, without your the Dimensions in your view splitting up your numbers. Tableau allows you to sort your Dimensions to a Measure in your view, like the example below. However, what if you quickly want to check the overall...

## Editing Multiple Aliases in Tableau by Blending

A quick tip on how to edit multiple aliases in Tableau by blending in an external data table. There might be times when aliases are used in data sets to clean up the data set, for example, in Survey data the questions might be replaced by a number (Q1, Q2, etc) to get...

## User Filters in Tableau Server – Part 2

This is Part 2 of the user filter blog on using an external table with usernames and groups to create user filters based on calculated fields. Please refer to Part 1 written by Laura Scavino for a quick introduction on adding user filters by creating username sets. A...

## Custom Pin Drop Location Symbols in Tableau fixed on Long-Lat

A quick tip on how to create custom pin drop location symbols actually pointing at the longitude and latitude in Tableau. Custom shapes are a great way to improve your visualisations in Tableau, one of which are pin location symbols to point at a postcode or location...

## Dynamic Reference bands and colouring based on standard deviation in Tableau

A step-by-step guide on how to make dynamic reference bands and colouring based on your window average. Reference bands and references lines can be useful for spotting outliers in your data over time, and making them dynamic to adapt to your time filter and 1, 2 or 3...

## Quick and easy copy pasting parts of your data in Alteryx

A quick tip on how to copy paste parts of your data set in Alteryx with or without headers into a text file input. Thanks Ben Moss for sharing this great tip with DS8! By highlighting parts of your data in the results pane of Alteryx (before or after any tool in your...

## One RegEx tool to extract all Months and their abbreviations in Alteryx

A quick way to extract month names or abbreviations using a single Regular Expression (RegEx) string. Regular Expressions are used to identify patterns in text strings in order to extract, replace, delete and/or match these strings. Alteryx has a build-in RegEx tool,...