777 search results for "maps"

Creating 2011 Census Output Area Change Maps Using R

December 13, 2012
By
Creating 2011 Census Output Area Change Maps Using R

The 2001 Census used a different set of Output Areas (OA) than the current 2011 boundaries; reflecting changes in the spatial distribution of the underlying population. For example, if an area has become more heavily populated since 2001, it makes sense that a previous OA might be split into multiple new segments. The ONS have provided both...

Read more »

US State Maps using map_data()

December 11, 2012
By
US State Maps using map_data()

Today’s short post will show how to make a simple map using map_data(). Let’s assume you have data in a CSV file that may look like this: Notice the lower case state names; they will make merging the data much easier. The variable of inte...

Read more »

Comparing regions: maps, cartograms and tree maps

December 11, 2012
By
Comparing regions: maps, cartograms and tree maps

Last week I attended a seminar where a talk was given about the economic opportunities in the SAAAME (South-America, Asia, Africa and Middle East) regions. Of course a map was shown with those regions highlighted. The map was not that disimilar to the one below. library(RColorBrewer)library(rworldmap)data(countryExData)par(mai=c(0,0,0.2,0),xaxs="i",yaxs="i")mapByRegion( countryExData, ...

Read more »

Dot-density maps with spsample()

December 7, 2012
By
Dot-density maps with spsample()

Today’s example is a little odd, in that the code isn’t pretty and the example isn’t really something you’d actually produce in real life — but if you’ll overlook those oddities, you’ll find that the spsample(...

Read more »

Timeline Maps with googleVis & Twitter Bootstrap Carousel (& updated Slidify)

November 14, 2012
By

I've wanted to create timeline maps with interactive googleVis Geomaps for a while. These would be a nice way to quickly show the spatial distribution of some data over time. It turns out that it's pretty easy to do with a plugin for Twitter Bootstra...

Read more »

Use GBIF and googleVis to Make Maps with Species Occurrence Data

September 24, 2012
By
Use GBIF and googleVis to Make Maps with Species Occurrence Data

This is a short follow up on THIS posting.. I will briefly show how to use the dismo- and the googeVis package to plot species occurrences on an interactive Google map, like the one below (HERE is the R-script)MapID2ce4348e653

2012-5 Voronoi Treemaps in R

September 19, 2012
By

A Voronoi Treemap is a visualisation tool for displaying data with a hierarchical structure.  This article describes an open source implementation of Voronoi Treemaps in the R language and environment for statistical computing and graphics.  The article includes example usage … Continue reading →

Read more »

R: Isarithmic Maps of Election Data (1/2)

September 12, 2012
By
R: Isarithmic Maps of Election Data (1/2)

In this tutorial I will show

Read more »

ggplot2 maps with insets

August 22, 2012
By
ggplot2 maps with insets

Here's a quick demo of creating a map with an inset within it using ggplot. The inset is achieved using the gridExtra package. Install libraries, set directory, read file setwd("/Users/ScottMac/Dropbox/CANPOLIN_networks_ms/data") # change ...

Read more »

Map biodiversity records with rgbif, maps and ggplot2 packages in R

July 9, 2012
By
Map biodiversity records with rgbif, maps and ggplot2 packages in R

Global Biodiversity Information Facility or GBIF is an international consortium working towards making Biodiversity information available through single portal to everyone.  GBIF with its partners are working towards mobilizing data, developing data and metadata standards, developing distributed database system and making the data accessible through APIs. At this point this largest single window data source covering wide spectrum of taxa and

Read more »