3058 search results for "map"

F1 Doing the Data Visualisation Competition Thing With Tata?

July 2, 2014
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F1 Doing the Data Visualisation Competition Thing With Tata?

Sort of via @jottevanger, it seems that Tata Communications announces the first challenge in the F1® Connectivity Innovation Prize to extract and present new information from Formula One Management’s live data feeds. (The F1 site has a post Tata launches F1® Connectivity Innovation Prize dated “10 Jun 2014″? What’s that about then?) Tata Communications are

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Rmetrics Workshop on R in Finance and Insurance, Paris 2014

June 28, 2014
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Rmetrics Workshop on R in Finance and Insurance, Paris 2014

Here are the slides of the talk that I gave yesterday with Prof. Frédéric Planchet at the 8th Rmetrics workshop in Insurance and Finance :   http://www.ressources-actuarielles.net/C1256F13006585B2/0/39B54166464089AFC12572B0003D88C2/$FILE/Rmetrics.pdf?OpenElement   The R codes can found here : For ESG http://www.ressources-actuarielles.net/EXT/ISFA/fp-isfa.nsf/34a14c286dfb0903c1256ffd00502d73/a5e99e9abf5d3674c125772f00600f6c/$FILE/examplesESG.R For ESGtoolkit … Continue reading →

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Include promo/activity effect into the prediction (extended ARIMA model with R)

Include promo/activity effect into the prediction (extended ARIMA model with R)

I want to consider an approach of forecasting I really like and frequently use. It allows to include the promo campaigns (or another activities and other variables as well) effect into the prediction of total amount. I will use a fictitious example and data in this post, but it works really good with my real data.  So, you can... Read More »

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Tailoring univariate probability distributions

June 26, 2014
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Tailoring univariate probability distributions

This post shows how to build a custom univariate distribution in R from scratch, so that you end up with the essential functions: a probability density function, cumulative distribution function, quantile function and random number generator. In the beginning all you need is an equation of the probability density function, … Continue reading →

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rlist: a new package for working with list objects in R

June 25, 2014
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In recent years, non-relational data have attracted more and more attentions. Roughly speaking, all datasets that are hard to put into a rectangular table with rows and columns are non-relational datasets. The following data is a very simple non-relational dataset in JSON format. The dataset contains some information of three programmers, each of whom has a name, an age, some...

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Cleaning up oversized github repositories for R and beyond

June 25, 2014
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Cleaning up oversized github repositories for R and beyond

The version control system Git is an amazing piece of software for tracking every change that you make to a project and saving its entire history. It is incredibly useful, for users of R and other programming languages, leading it shoot from 0 market share in 2005 (when it was first released) to market domination in one short decade. However, Git can cause confusion....

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Generating and visualising multivariate random numbers in R

June 24, 2014
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Generating and visualising multivariate random numbers in R

This post will present the wonderful pairs.panels function of the psych package that I discovered recently to visualise multivariate random numbers.Here is a little example with a Gaussian copula and normal and log-normal marginal distributions. I use pairs.panels to illustrate the steps along the way.I start with standardised multivariate normal random numbers:library(psych)library(MASS)Sig ...

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Performing ANOVA Test in R: Results and Interpretation

June 23, 2014
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Performing ANOVA Test in R: Results and Interpretation

When testing an hypothesis with a categorical explanatory variable and a quantitative response variable, the tool normally used in statistics is Analysis of Variances, also called ANOVA.In this post I am performing an ANOVA test using the R programming language, to a...

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Gulf Stream centre detection

June 22, 2014
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Gulf Stream centre detection

Introduction Definitions of Gulf Stream location sometimes centre on thermal signature, but it might make sense to work with dynamic height instead. This is illustrated here, using a model for , with the distance along the transect. The idea is to select , the halfway point in the function, where the slope is maximum...

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Contest: Prizes for Best R User Groups Plotting Code

June 19, 2014
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by Joseph Rickert For the past year or so we have been plotting the location of R user groups around the world using code (Download RUGS) adapted from a solution that Sandy Muspratt originally posted on Stack Overflow. In last week’s post, we made a modest improvement to our presentation by including a map of Europe. However, R users...

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