# Tag Archives: ggplot2

## Drawing a Fish Curve using R and ggplot2

Intro Recently, I wondered whether there is a way to draw a fish shape using a mathematical function. Since I did not find a ready-made R function, I tried to write the function by myself. The equations, I've used for … Continue reading

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## How to order factors by level frequency and level name

Intro Quite frequently, factor variables are ordered by level frequency. However, factor levels having only a few observations are sometimes collapsed into one level usually named “others”. Since this level is usually not of particular interest, it may be a … Continue reading

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## Sample Size Calculation Using R

Preample “Sample Size Calculation Using R” – the title of this blog post – sounds very comprehensive. However, this post only deals with the sample size collection for one particular test (two sample t-test). A collection of functions for basic … Continue reading

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## How to Plot Venn Diagrams Using R, ggplot2 and ggforce

Intro Venn diagrams – named after the English logician and philosopher John Venn – “illustrate the logical relationships between two or more sets of items” with overlapping circles. In this tutorial, I'll show how to plot a three set venn … Continue reading

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## How to plot GPS data using R, ggplot2 and ggmap

Intro A couple of months ago, I bought a mobile GPS navigation device. The device makes it possible to record the routes we travel with our car. Since the routes can by exported as .gpx files, it is rather easy … 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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