2235 search results for "MAP"

Multivariate Data Analysis and Visualization Through Network Mapping

June 27, 2014
By
Multivariate Data Analysis and  Visualization Through Network Mapping

Recently I had the pleasure of speaking about one of my favorite topics, Network Mapping. This is a continuation of a general theme I’ve previously discussed and involves the merger of statistical and multivariate data analysis results with a network. Over the past year I’ve been working on two major tools, DeviumWeb and MetaMapR, which

Read more »

Creating Inset Map with ggplot2

June 14, 2014
By
Creating Inset Map with ggplot2

According to wiki.GIS.com one of the reason for using inset map is to provide a reference for an area for unfamiliar readers.  Inset map is also considered a great asset for cartographers.  Most of the GIS software available in the market hav...

Read more »

Malawi Animated Rainfall Map

June 1, 2014
By
Malawi Animated Rainfall Map

Couple of months ago, Charles Langton Vanya of Malawi contacted me on how to make animated rainfall map  in R. I was very busy that I was not able to respond. Anyway, to Mr. Vanya, here is the code you can play on to produce a similar map as below.

Read more »

Mindoro Digital Elevation Map Updated

May 30, 2014
By
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 ...

Read more »

Using mapply in Rcpp11

May 22, 2014
By

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...

Read more »

Plotting Microtiter Plate Maps

May 1, 2014
By
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 …

Read more »

colormap

April 30, 2014
By
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....

Read more »

A world map of R user activity

April 28, 2014
By
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...

Read more »

MapReduce with R on Hadoop and Amazon EMR

April 25, 2014
By
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 →

Read more »

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

April 13, 2014
By

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

Read more »