Articles by Amit

Setting up twitter streamR Service on an Ubuntu server

November 7, 2017 | Amit

I am working on a super-secret project for which I am harvesting a highly confidential source of data: twitter ? The idea is to gather a small amount of twitter data, but for a long time… maybe a year. I tried to use the package TwitteR, but it can only  grab ...
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Pop quiz! What is this chart saying?

November 8, 2016 | Amit

I have been reading more and more about how people can’t interpret charts… which kinda never occurred to me, if I’m gonna be very honest.  Anyway, it kind of made me think of actually testing people informally, to see for myself. So I’ve been doing just that: ... [Read more...]

Heart-shaped wordcloud, celebrating Colombia peace treaty

September 26, 2016 | Amit

This is a lightening quick post just providing the script to draw a heart-shaped wordcloud, using the awesome wordcloud2 package. See the resulting image here:   Apparently, the original code allows you to fit a wordcloud to any shape, even custom shapes, but I didn’t find that functionality pushed out ... [Read more...]

I’m leading the Accra R-User Meetups!

May 24, 2016 | Amit

I am not sure how, but I found Data Science Africa, whose mission it is to promote data science in Africa. For now, they are limited to organizing and running meetups across Africa, mostly focused on R, although there are higher albeit more ambitious targets. Anyway, since I’m in ... [Read more...]

Make dashboard Tiles/Notecards in R

February 25, 2016 | Amit

Dashboard Tiles/Notecards are a great way to visualize just one number, and make it big and pretty. They can emphasize results in an easily digestible and colourful format. I was surprised that there was no way to create tiles offline (there is however a very good online version in ...
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KPI dashboard in R with animated icons

February 12, 2016 | Amit

So Key Performance Indicators (KPIs) are all the rage in the dashboarding community… well everywhere really. The premise is simple… check a list of measurements against targets and show how they compare using some kind of visualization. I haven’t yet seen, however, a version that can utilize animated icons ...
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R Tagosphere!

January 31, 2016 | Amit

This post explores the inter-relationships of StackOverflow Tags for R-related questions. So I grabbed all the questions tagged with “r”, took the other tags in each question and made some network charts that show how often each tag is seen with the other tags. The point is to see the ...
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Sentiment analysis on my girlfriend’s text messages

September 11, 2015 | Amit

When I told my friends that I wanted to give my girlfriend an infographic of us (centered around a sentimental analysis of our texts) as a gift for our first anniversary, most of them told me that was a terrible idea. Yeah… well… CHALLENGE ACCEPTED!! Without further ado, this is …
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Irrigated Crop Calendar Vizualisation

July 2, 2015 | Amit

Visualizations made for FAO AQUASTAT: After individual Irrigated Crop Calendars for all countries were combined, it allowed for some interesting analysis of global irrigation. These included “The Big Picture” (at two levels of resolution), as well as viewing irrigation by region and by crop. All explanations and visualizations on: http://...
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Simplified renewable water resources, visualized

July 1, 2015 | Amit

A visualization prepared for FAO AQUASTAT: In an interest to simplify the information about renewable water resources in all countries in the world, we prepared simplified visualizations of water flows through a country. Please navigate to the AQUASTAT Water Resources page and use the “Figures” dropdown to see the flow ...
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The Reddit effect…

May 1, 2015 | Amit

So I had a happy little blog… no one really paid attention, but I didn’t much care because I was happy. And then I posted one of my visualizations to reddit. This is what happened: (None of the log analyzers I found would make a plot like this so ...
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Irrigation area treemaps

March 4, 2015 | Amit

These visualizations were performed for FAO AQUASTAT. These treemap charts allow for hierarchical organization of information of different types. In the image above, for example, the irrigation areas for each country are represented as the big boxes, within which the technology utilization is displayed in different colors. This allows users …
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Transboundary surface water flow

March 4, 2015 | Amit

A visualization generated for AQUASTAT of FAO. Two types of charts were prepared: Sankey and Network. The Sankey plots allow for an ‘automatic sorting’ of countries based on who is the water tower and who is the water source. This visualization is useful to demonstrate where a country falls on ...
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Chord progressions of 5 000 songs!

March 1, 2015 | Amit

The database contains analyses of over 5000 songs*. These analyses are uploaded by users and allow for all these songs to be analyzed in bulk, as well as individually. One of these ‘all song’ analyses enables users to gather chord progressions on ALL songs (see the analysis file to …
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