Rachel Costa

Rachel Costa

After 10 years working as reporter for several news outlets in Brazil, Rachel started to fell curious about new ways to tell stories – ways using more than words. The idea of working with data visualisation came after seeing “Snow Fall” for the first time (one of the first interactive stories, published by The NY Times). This was the moment in which learning these skills became a plan and Tableau arisen as a great tool to do that (allowing to test formats and colours in a hassle-free way). From her background she brings the obsession with making information accessible for the audience in a clear, effective and beautiful way.

Aside from the Data School, Rachel can be found in coding meetups (fighting against Phyton or JS), yoga classes, taking care of her “pet” (a sourdough called Barackterias), cooking or planning the next trip together with her Portuguese husband.

My to-do list to be put in practice in the New Year

Instead of moping over the past, let’s enjoy the last Friday of the year to build the traditional to-do list for 2017 Our last philosophic post of 2016 is about “if I had to start all over again…”. (The others from this series are My 7 biggest challenges in the Data...

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This is not another article about success

Because success is overrated, I decided to be more realistic and share 9 tips to survive the Data School experience Andy Kriebel gave us a list of philosophical subjects to write about this week. My first one, published yesterday, was a compilation of my thoughts...

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My 7 biggest challenges in the Data School

The most challenging things for a Brazilian journalist lost in the Data School Four days to the next year and here I am in front of a computer thinking about the things I have found most challenging in the Data School. As it is the perfect period of the year to create...

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Alteryx tips: Scraping data from Wikipedia using Wikidata

Wikipedia is full of interesting and structured data, so why not get it to use in a visualisation? In this blog post I go through my first experience scraping Wikipedia This week we have played around ways to use APIs in Alteryx. If you have never heard about APIs or...

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Web editing: Tableau Server vs Tableau Desktop

If you are a user of Tableau Server you possibly noticed that it is possible to either create or edit views and dashboards online. However the functionalities in the server are not exactly the same than in Tableau Desktop. Discover few differences Since the launch of...

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Tableau Tip: Customizing a bar chart to make it a hug

Bar charts don't need to be boring.They can be customised to give a twist in your visualisation, creating a different visual effect Yesterday we played around body measures from the Data School people. It was part of a crazy idea of Iron Viz that Andy had (he...

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Merging data in Tableau: Blend or join your datasets?

Tableau offers different ways to merge your data. Learn the differences between them to choose when to blend or to join your datasets Sometimes you would like to use more than one dataset at the same time to create your dashboard. Tableau allows you to merge different...

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How to create hex tile map in Tableau

Tired of using normal shapes in your maps? Would you like to try new formats that give emphasis to other things that not the shape of the areas? Try this tutorial showing how to create hex tile map in Tableau Hex tile maps are a good option in the cases where it would...

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3 steps to work with regression analysis in Alteryx

In the second part of my mini series about predictive analytics, I will show you the steps to perform regression analysis in Alteryx As promised on my first post about Predictive Analytics (you can find it here), here is the second example I presented during the...

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Tableau: Tips and tricks to build better maps

A quick guide to get rid of countries or states you don’t need in your visualisation, plus an explanation about how to use it to add Alaska (or Hawaii) to your US map We have just finished the #DashboardWeek at the Data School. The idea was to create one dashboard a...

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3 tips to avoid problems while importing CSV files into Alteryx

Are you finding messy data after importing a CSV file into Alteryx? Keep these three tips in mind and avoid disappointments CSVs rock. I really like the format. Possible because during my years working in newsrooms, I ended up in front of PDFs full of data too many...

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Learning Alteryx: The IF function is my new BFF

IF you have no programming/advanced Excel experience and is starting to use Alteryx THEN read this ELSE you can skip this post First time I heard about IF expressions was during a class of introduction to code (OK, I have never been an advanced Excel user, I have to...

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12 basic tools in Alteryx and what each one does

There are more than 100 tools in Alteryx. Check out this list with 12 of Alteryx basic tools that can be used as a start point to play around with the software   If you are starting to learn a new language you would not choose the most difficult novel ever published...

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3 best practices to make your maps more powerful

Maps are a powerful tool in data visualisation but it is important to pay attention to the details when choose to use them in your work   Cartographic representations are one of the oldest ways to visualise data. One of the pioneering works in the world of data...

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3 steps to visualise more than 150 years in a clear way

Our way to say “Hello world” from the new Data School cohort is recreating and explaining a visualisation using Tableau. Using UK data about climate change, I created a “calendar heat map”. Curious about what it is? Check the post! [iframe...

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