Blog Archives

Plotting GPX tracks with Shiny and Leaflet

August 5, 2016
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Plotting GPX tracks with Shiny and Leaflet

Lately, I got the chance to play around with Shiny and Leaflet a lot - and it is really fun! So I decided to catch up on an old post of mine and build a Shiny application where you can upload your own GPX files and plot them directly in the browser.Of course,...

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Visualisation of Likert scale results

July 31, 2016
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Visualisation of Likert scale results

I wrote a function to visualise results of Likert scale items. Please find the function below the post. Here is an example plot:The function is called 'plot.likert' and takes the following arguments:- vec: The vector with the raw results- possible.values: A vector with all the possible values. This is sometimes...

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Troubles with cell labels in mosaic plots… and how to solve them.

July 29, 2016
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Troubles with cell labels in mosaic plots… and how to solve them.

Today I want to write about a solution to a quite specific problem. Suppose, you want to label cells in your 'vcd' package mosaic plots in a custom way. For example, we might want to use cell labels which indicate "too much" or "too few" cases (given your expected values). Such labels might be "+" and "-" (and maybe...

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Just plot this…

April 25, 2016
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png("goodbye.png", height = 625, width = 500)par(col = "purple")plot(1, 1, xlim = c(0,800), ylim = c(0,1600), type = "n", bty = "n", xaxt = "n", yaxt = "n", xlab = "", ylab = "")symbols(x = 400, y = 1200, circles = 400, add = T, lwd = 40)lines(x = c(40...

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Do basic R operations much faster in bash [Slightly off-topic]

January 25, 2016
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R is great, and you can do a LOT OF stuff with it.However, sometimes you want to do really basic stuff with huge or a lot of files. At work, I have to do that a lot because I am mostly dealing with language data that often needs some pre-processing.Mos...

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Stop fiddling around with copied paths in Windows R

December 23, 2015
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I work with R on both Mac OS and Windows. On Windows, you get the option to copy the path of a file or folder by holding Shift while right-clicking on the file or folder. As useful as this feature is, it copies paths to your clipboard in Windows format...

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Time series analysis with R: Testing stuff with NetAtmo data

December 21, 2015
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Time series analysis with R: Testing stuff with NetAtmo data

I've got a NetAtmo weather station. One can download the measurements from its web interface as a CSV file. I wanted to give time series analysis with the extraction of seasonal components ('decomposition') a try, so I thought it would be a good opportunity to use the temperature measurements of my weather station. The data is available.To...

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Changing the font of R base graphic plots.

August 24, 2015
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Changing the font of R base graphic plots.

Want to change the font used in your R plots? I got a quite simple solution that works on Mac OS.You need the function 'quartzFonts'. With this function, you can define additional font families to use in your R base graphic plots. The default font fami...

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Mapping the world with tweets

February 16, 2015
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Mapping the world with tweets

A few days ago, I collected 30 minutes of tweets all around the world. I used the twitteR and streamR packages for this. The nice thing about those tweets is that they have geo-information associated with them. Not all of them, of course, but more than enough.Let's see, what happens if we plot all the...

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Mapping the world with tweets (including a GIF without cats and a Shiny App).

February 16, 2015
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Mapping the world with tweets (including a GIF without cats and a Shiny App).

A few days ago, I collected 30 minutes of tweets all around the world. I used the twitteR and streamR packages for this. The nice thing about those tweets is that they have geo-information associated with them. Not all of them, of course, but more than...

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