2175 search results for "Map"

Mindoro Digital Elevation Map Updated

May 30, 2014
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Mindoro Digital Elevation Map Updated

Almost 2 years ago, I made a post on creating digital elevation map using R. For that post, I used the basic R plotting function to create the map. Recently, I started learning to use ggplot2 package for visualizing data. Today, I created the same map ...

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Using mapply in Rcpp11

May 22, 2014
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mapply is a well known (or perhaps not) function in R. mapply applies a function to extracts from one or more vectors. For example in R: > mapply( function(x,y, z) x + y + z, 1:4, 4:1, 2) # 7 7 7 7 Notice how the last argument is recycled as...

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Plotting Microtiter Plate Maps

May 1, 2014
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Plotting Microtiter Plate Maps

I recently wrote about my workflow for Analyzing Microbial Growth with R. Perhaps the most important part of that process is the plate map, which describes the different experimental variables and where they occur. In the example case, the plate map described which strain was growing and in which environment …

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colormap

April 30, 2014
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colormap

Introduction Over the past month or so I have been trying different ways of handling GMT-style colormaps in Oce. I think my present solution is on the right track, but I am posting here to get more eyes on the problem. Note that the function called Colormap() here will be called colormap() if I decided to incorporate it into Oce....

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A world map of R user activity

April 28, 2014
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A world map of R user activity

R easily has more than two million users around the world, but where is R activity the most concentrated? That's the question that the team of R users at Rapporter seeks to answer, by combining data about locations of R Foundation members, package authors, package downloaders, and user group members into a single, country-wide "R usage score". Those R...

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MapReduce with R on Hadoop and Amazon EMR

April 25, 2014
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MapReduce with R on Hadoop and Amazon EMR

You all know why MapReduce is fancy – so let’s just jump right in. I like researching data and I like to see results fast – does that mean I enjoy the process of setting up a Hadoop cluster? No, … Continue reading →

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Finally, an easy way to fix the horizontal lines in ggplot2 maps

April 13, 2014
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ggplot2 tries to make it super easy to add country or state borders to your map, and for the most part it works great as long as you include the entire map region in your plot (all the states or the entire world map for example). A long standing issue with the ggplot2 borders() function

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WrightMap 1.1 Ancillary Antelope Released

April 12, 2014
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WrightMap 1.1 Ancillary Antelope Released

The new version of WrightMap (Ancillary Antelope) is now available on CRAN. Remember that you can visit the package tutorials on our website. This new version includes: - New function to create fit graphs like the example below. - Parameter conversion: Function for calculating Thurstonian thresholds from Master’s deltas. - New examples. - Added axis range controls. - Made histogram...

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Heatmap of Toronto Traffic Signals using RGoogleMaps

April 12, 2014
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Heatmap of Toronto Traffic Signals using RGoogleMaps

A little while back there was an article in blogTO about how a reddit user had used data from Toronto's Open Data initiative to produce a rather cool-looking map of all the locations of all the traffic signals here in the city.It's neat because as the author on blogTO notes, it is recognizable as Toronto...

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Mapping academic collaborations in Evolutionary Biology

Mapping academic collaborations in Evolutionary Biology

Mapping academic collaborations in Evolutionary Biology This post is a repubication of a visualisation I did in 2011 for my (now defunct) datajujitsu.co.uk blog. It was a naive first attempt at web-scraping from an academic publishers website. It was done before I was aware of the problems surrounding access to, and text-mining of, online academic content hosted by...

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