Sentiment of Security Now! over time

 Posted on May 29, 2018  |  7 minutes (1332 words)

If you believe some people, everything is getting worse1. More so in infosec. For the past few years I listened to many many hours of podcasts, many hours where spent on the weekly show Security Now!. The hosts Steven Gibson and Leo Laporte have been talking about security related news every week over 13 years. Although the content has changed over time, there used to be more explanations but the majority of time is now filled with news, we could use the sentiment in the episodes to see if ‘everything is getting worse’. [Read More]
sentiment  security-now  tutorial  tidytext  tidyverse  dplyr  ggplot2  intermediate  widyr 

Where to live in the Netherlands based on temperature XKCD style

 Posted on November 20, 2017  |  5 minutes (1037 words)

After seeing a plot of best places to live in Spain and the USA based on the weather, I had to chime in and do the same thing for the Netherlands. The idea is simple, determine where you want to live based on your temperature preferences. First the end result: How to read this plot? In this xkcd comic we see that the topleft of the the graph represents “if you hate cold and hate heat”, if you go down from the topleft to the bottom left the winters get colder and ending in “if you love cold and hate heat”. [Read More]
XKCD  weather  humidex  dplyr  ggplot2  readr  Netherlands 

Plotting a map with ggplot2, color by tile

 Posted on January 6, 2017  |  11 minutes (2274 words)

Introduction Last week I was playing with creating maps using R and GGPLOT2. As I was learning I realized information about creating maps in ggplot is scattered over the internet. So here I combine all that knowledge. So if something is absolutely wrong/ ridiculous / stupid / slightly off or not clear, contact me or open an issue on the github page. When you search for plotting examples you will often encounter the packages maps and mapdata. [Read More]
ggplot2  intermediate  tutorial  maps  sp 

From spss to R, part 4

 Posted on April 4, 2016  |  15 minutes (3074 words)

This is the second part of working with ggplot. We will combine the packages dplyr and ggplot to improve our workflow. When you make a visualisation you often experiment with different versions of your plot. Our workflow will be dynamic, in stead of saving every version of the plot you created, we will recreate the plot untill it looks the way you want it. In the previous lesson we worked with some build in datasets. [Read More]
beginner  dplyr  ggplot2  spps-to-r  tutorial 

From spss to R, part 3

 Posted on March 2, 2016  |  9 minutes (1716 words)

In this post we will start with a build-in dataset and some basic ggplot graphics. In the next post we will combine dplyr and ggplot to do awesome stuff with the Dutch University student counts from the previous lessons. We will work with the build-in dataset mtcars. There are many datasets in r library(help = "datasets") but in many examples online you will see the iris and mtcars examples. Find more information about the dataset with ? [Read More]
beginner  ggplot2  spps-to-r  mtcars  chickwts  tutorial 

From spss to R, part 1

 Posted on February 20, 2016  |  7 minutes (1326 words)

Introduction This whole blog is devoted to R and clean coding in R. But what if you want to start with R? There are millions of websites devoted to learning R. just look at the number of hits on a certain search machine. Most of these hits start with the basics and slowly work your way up to more advanced examples. There is often one reason to start with R: you want to achieve something that doesn’t work in other programs. [Read More]
beginner  ggplot2  spps-to-r  tutorial