3065 search results for "map"

Functional programming in R

Functional programming in R

Functional programming in R This post is based on a talk I gave at the Manchester R User Group on functional programming in R on May 2nd 2013. The original slides can be found here This post is about functional programming, why it is at the heart of the R language and how it can hopefully help you...

Read more »

Social Science Goes R: Weighted Survey Data

April 2, 2014
By

Social Science Goes R: Weighted Survey Data Social Science Goes R: Weighted Survey Data To get this blog started, I'll be rolling out a series of posts relating to the use of survey data in R. Most content comes from the ECPR...

Read more »

Include uncertainty in a financial model

April 1, 2014
By
Include uncertainty in a financial model

Here’s a post that appears on my new website, ragscripts.com. On-line resources for analysts are often either too general to be of practical use or too specialised to be accessible. The aim of ragscripts.com is to remedy this by providing start to finish directions for complex analytical tasks. The site is under construction at the … Continue reading...

Read more »

Calendar charts with googleVis

April 1, 2014
By
Calendar charts with googleVis

My little series of posts about the new googleVis charts continues with calendar charts. Google's calendar charts are still in beta, but they provide already a nice heat map visualisation of calendar year data. The current development version of google...

Read more »

Using iterators for sparse vectors and matrices

March 31, 2014
By
Using iterators for sparse vectors and matrices

Iterating over a sparse vector Consider the following vector: idx1 <- c(2L, 0L, 4L, 0L, 7L) A sparse representation of this vector will tell that at entries 1,3,5 (or at entries 0,2,4 if we are 0-based) we will find the values 2,4,7. Using Eigen via RcppEigen we can obtain the coercion with .sparseView(). We can iterate over all elements (including the zeros) in a sparse vector...

Read more »

Using iterators for sparse vectors and matrices

March 31, 2014
By
Using iterators for sparse vectors and matrices

Iterating over a sparse vector Consider the following vector: idx1 <- c(2L, 0L, 4L, 0L, 7L)A sparse representation of this vector will tell that at entries 1,3,5 (or at entries 0,2,4 if we are 0-based) we will find the values 2,4,7. Using Eigen via RcppEigen we can obtain the coercion with .sparseView(). We can iterate over all elements (including the zeros) in a sparse vector...

Read more »

Bayesian Data Analysis [BDA3 – part #2]

March 30, 2014
By
Bayesian Data Analysis [BDA3 – part #2]

Here is the second part of my review of Gelman et al.’ Bayesian Data Analysis (third edition): “When an iterative simulation algorithm is “tuned” (…) the iterations will not in general converge to the target distribution.” (p.297) Part III covers advanced computation, obviously including MCMC but also model approximations like variational Bayes and expectation propagation

Read more »

Introduction to PortfolioAnalytics

March 29, 2014
By
Introduction to PortfolioAnalytics

PortfolioAnalytics Basics This is a guest post by Ross Bennett. Ross is currently enrolled in the University of Washington Master of Science in Computational Finance & Risk Management program with an expected graduation date of December 2014. He worked on the PortfolioAnalytics...

Read more »

A Simple Introduction to the Graphing Philosophy of ggplot2

March 28, 2014
By
A Simple Introduction to the Graphing Philosophy of ggplot2

Blog post: a very basic introduction to building data plots using ggplot2 in R. #Rstats

Read more »

Why use R? Five reasons.

March 27, 2014
By
Why use R? Five reasons.

In this post I will go through 5 reasons: zero cost, crazy popularity, awesome power, dazzling flexibility, and mind-blowing support. I believe R is the best statistical programming language to learn. As a blogger who has contributed over 150 posts in Stata and over 100 in R I have extensive experience with both a proprietary statistical programming language...

Read more »

Sponsors

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)