Blog Archives

anytime – dates in R

November 8, 2018
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I just saw an announcement on R Bloggers about the anytime package. It looks to be a very handy package to convert dates in pretty much any format to Date or POSIX classes, without the need to define the format – it’s guessed by an underlying C++ library. It certainly seems to be flexible… putting

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Estimating Pi

October 16, 2018
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I came across this post which gives a method to estimate Pi by using a circle, it’s circumscribed square and (lots of) random points within said square. Booth used Stata to estimate Pi, but here’s some R code to do the same thing… x

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“Where to bird” geostats in R

August 15, 2018
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“Where to bird” geostats in R

I just came across a nice little post on acquiring and visualizing geodata in R using the Max Planck Institute of Ornithology as an example. It’s by the rOpenSci guys. Some useful code in there by the look of it… ? Worth a look…

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Coloured output in the R console

July 12, 2018
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Coloured output in the R console

Just a little fun today… the R console isn’t the most interesting of things… text is typically either black or red (assuming default settings in RStudio). There’s a package though called crayon which allows one to change the style of text in terms of colour, background and some font-type settings. It could be an interesting

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rOpenSci’s drake package

July 10, 2018
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rOpenSci’s drake package

If you don’t know rOpenSci, then I recommend checking them out. They write a lot of really good packages for R. A relatively new seems to be drake. I’ve not played with it yet, but it looks to be very useful at giving indications about which parts of an analysis are subject to changes, and

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Rough looking figures from R

July 4, 2018
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A recent blog post regarding data visualization had some barplots I liked the look of (aesthetically…for research purposes, they wouldn’t be suitable). They look as if they’ve be coloured in with a pencil, rather than having solid blocks of colour… I wondered whether it’s possible with R, and indeed it is. There’s a github project

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Beeswarms instead of histograms

June 28, 2018
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Beeswarms instead of histograms

Histograms are good, density plots are also good. Violin and bean plots too. Recently I had someone ask for a plot where you could see each individual point along a continuum, give the points specific colours based on a second variable (similar to the figure), which deviates somewhat from the typical density type plots. Apparently,

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Merging spatial buffers in R

June 11, 2018
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Merging spatial buffers in R

I’m sure there’s a better way out there, but I struggled to find a way to dissolve polygons that touched/overlapped each other (the special case being buffers). For example,  using the osmdata package, we can download the polygons representing hospital buildings in Bern, Switzerland. library(osmdata) library(rgdal) ; library(maptools) ; library(rgeos) q0

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Intersecting points and overlapping polygons

May 27, 2018
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I’ve been doing some spatial stuff of late and the next little step will involve intersecting points with possibly many overlapping polygons. The sp package has a function called over which returns the polygons that points intersects with. The catch though, is that it only returns the last (highest numerical value) polygon a point overlaps

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Tips for great graphics

May 26, 2018
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Tips for great graphics

R is a great program for generating top-notch graphics. But to get the best out of it, you need to put in a little more work. Here are a few tips for adapting your R graphics to make them look a little better. 1) Dont use the “File/Save as…/” menu. If you set up your

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