Monthly Archives: July 2012

A gWidgets GUI for climate data

July 9, 2012
By
A gWidgets GUI for climate data

If you haven’t worked with the gWidgets package it’s worth some time exploring it which is what I’ve been doing for a little paleo project I’ve been working on. After struggling with the few demos and tutorials I could find I went ahead and bought the book: Programming Graphical User Interfaces in R. Luckily the

Read more »

introduction to R: learning by doing (part 1)

July 9, 2012
By
introduction to R: learning by doing (part 1)

Geography is often about statistics as it is the basis for fast exchange of information: providing a mean and standard deviation to the audience is often much easier then showing raw data: Learning a script language for this purpose can be a hard-ass work. But I think it is more often a need of practice.

Read more »

Fumblings with Ranked Likert Scale Data in R

July 9, 2012
By
Fumblings with Ranked Likert Scale Data in R

The code is horrible and the visualisations quite possibly misleading, but I’m dead tired and there are a couple of tricks in the following R code that I want to remember, so here’s a contrived bit of fumbling with some data of the form: enjoyCompany tooMuchFamily 1 strongly agree strongly disagree 2 strongly agree strongly

Read more »

A Napa Valley wine tasting map, made with R and ggmap

July 9, 2012
By
A Napa Valley wine tasting map, made with R and ggmap

R has had a maps package available since the very early days. It's great for simple geographic maps, but the political boundaries can be out of date. For more detailed maps, you can also download shape files and use the sp package to draw borders directly. But for accurate and attractive maps of countries, roads and satellite imagery, nothing...

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 »

Example 9.37: (Mis)behavior of binomial confidence intervals

July 9, 2012
By
Example 9.37: (Mis)behavior of binomial confidence intervals

While traditional statistics courses teach students to calculate intervals and test for binomial proportions using a normal or t approximation, this method does not always work well. Agresti and Coull ("Approximate is better than "exact' for interval estimation of binomial proportions". The American Statistician, 1998; 52:119-126) demonstrated this and reintroduced an...

Read more »

Trend and Spatial Pattern of Poverty in the Philippines

July 9, 2012
By
Trend and Spatial Pattern of Poverty in the Philippines

In a teaching demo that I have conducted, I discussed on how R can be used to analyze trends and spatial pattern of poverty incidence in the Philippines. Playing on the data I got from the National Statistical Coordination Board below is what I got.&...

Read more »

leaf area measuring — R package “EBImage”

July 9, 2012
By
leaf area measuring — R package “EBImage”

Besides microscopic images in our routine, common photos are frequently taken to measure quantitative plant features, such as leaf area, root length, branch numbers, etc. Scientific software is available for manual processing. For example, to measure the root length, one need to use the … Continue reading →

Read more »

Network Visualization of Key Driver Analysis

July 8, 2012
By
Network Visualization of Key Driver Analysis

Whatever happened to those evaluations that your airline asked you to complete after taking a flight? They ask you for a number of ratings about buying your ticket, attributes of the plane, the service you received, and if you were satisfied, if you wo...

Read more »

Bubble Plots (ggplot2)

July 8, 2012
By
Bubble Plots (ggplot2)

1 Introduction Rarely have I seen a three dimension graph including time, value, and volatility. It is essenti

Read more »

Sponsors

Mango solutions



RStudio homepage



Zero Inflated Models and Generalized Linear Mixed Models with R

Dommino data lab

Quantide: statistical consulting and training



http://www.eoda.de





ODSC

ODSC

CRC R books series





Six Sigma Online Training





Contact us if you wish to help support R-bloggers, and place your banner here.

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)