Posts Tagged ‘ plotting ’

Maps without map packages

July 1, 2010
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Maps without map packages

LATITUDE + LONGITUDE + OVERPLOTTING FIX = MAPS Decision Science News is always learning stuff from colleague, physicist, mathlete, and all-around computer whiz Jake Hofman. Today, it was a quick and clean way to make nice maps in R without using any map packages: just plot the latitude and longitude of your data points (e.g.

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Modifying basic plots in R

May 4, 2010
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Below is a walk-through of some of the basics of customizing plot in R. These are all based on the graphics package that comes in the base installation of R. Let’s start by making a basic plot in R. In the code snippets below, green text behind a...

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Plotting “time of day” data using ggplot2

April 14, 2010
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Plotting “time of day” data using ggplot2

William asks: How can I make a graph that looks like this, “tweet density” style, showing time intervals? He then helpfully describes his input data: a CSV file with headers “time started, time finished, date”. Here’s a simple CSV file, tasks.csv: task,date,start,end task1,2010-03-05,09:00:00,13:00:00 task2,2010-03-06,10:00:00,15:00:00 task3,2010-03-06,11:00:00,18:00:00 task4,2010-03-07,08:00:00,11:00:00 task5,2010-03-08,14:00:00,17:00:00 task6,2010-03-09,12:00:00,16:00:00 task7,2010-03-10,14:00:00,19:00:00 task8,2010-03-11,09:30:00,13:30:00 Read into R, calculate the

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