Category Archives: Visualizing Data

Analyse der DFG Fachkollegienwahl 2015 — Teil I

Die Deutsche Forschungsgemeinschaft (DFG) ist die europaweit größte Forschungsförderungsorganisation mit einem Jahresetat von aktuell etwa 3 Milliarden Euro (2016). Die Aufgabe der DFG besteht in der Auswahl und Finanzierung wissenschaftlicher Forschungsvorhaben an Hochschulen und Forschungsinstituten. Laut DFG werden eingereichte Förderanträge … Continue reading

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How to draw a CONSORT flow diagram using R and GraphViz

Intro The acronym CONSORT stands for “Consolidated Standards of Reporting Trials”. The CONSORT statement is published by the CONSORT group and gives recommendations aiming to improve the quality of reports of randomized clinical trials. Besides a 25 item checklist, the … Continue reading

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How to install and use the hexSticker package

Intro A couple of days ago, the hexSticker package was published on CRAN. The package provides some functions to plot hexagon stickers that may be used to promote R packages. As described on GitHub, the stickers can be plotted either … Continue reading

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How to plot a companion planting guide using ggplot2

Intro Recently my girl-friend asked me whether I could do some data project being useful for our family rather than just for myself. A couple of years ago – after our first son was born – we decided to rent … Continue reading

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How to scrape, import and visualize Telegram chats

Intro Telegram is a cloud-based and cross-platform instant messaging service. Unlike WhatsApp, Telegram clients exist not only for mobile devices but also for desktop operating systems. In addition, there is also a web based client. In this blog post I … Continue reading

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How to plot animated maps with gganimate

Intro Leipzig is the largest city in the federal state of Saxony, Germany. Since about 2009, Leipzig is one of the fastest growing German cities. Between 2006 and 2016, the population has grown from about 506.000 to 580.000 inhabitants.The largest … Continue reading

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How to add a background image to ggplot2 graphs

When producing so called infographics, it is rather common to use images rather than a mere grid as background. In this blog post, I will show how to use a background image with ggplot2. Packages required The following code will … Continue reading

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