There can never be too many examples for transforming data with R. So, here is another example of reshaping a data.frame into a matrix.Here I have a data frame that shows incremental claim payments over time for different loss occurrence (origin) years... [Read more...]

Changing the plotting width in bar-, column- and combo-charts of googleVis works identical and is defined by the bar.groupWidth argument. The dot in the argument means that it has to be split in R into bar="{groupWidth:'10%'}". Example

library(googleVis)<br>cc                       xvar="Country", yvar="Population",<br>                      options=list(seriesType="bars", legend="top",<br>                                   bar="{groupWidth:'10%'}",<br>                                   width=500, height=450),<br>                      chartid="thincolumns")<br>plot(cc)

Your browser doesn't support iframes.Session Info

R version 3.0.1 (2013-05-16)<br>Platform: x86_64-apple-darwin10.8.0 (64-bit)<br><br>locale:<br>[1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8<br><br>attached base packages:<br>[1] stats     graphics  grDevices utils     datasets  methods   base     <br><br>other attached packages:<br>[1] googleVis_0.4.5<br><br>loaded via a namespace (and not attached):<br>[1] RJSONIO_1.0-3 tools_3.0.1

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The ave function in R is one of those little helper function I feel I should be using more. Investigating its source code showed me another twist about R and the "[" function. But first let's look at ave.The top of ave's help page reads:Group Averages Over Level Combinations ... [Read more...]

The guys at Google continue to update and enhance the Chart Tools API. One new recent feature is a pie chart with a hole, or as some call them: donut charts.Thankfully the new functionality is being achieved through new options for the existing pie cha... [Read more...]

Over the weekend googleVis 0.4.4 found its way to CRAN. The function gvisTable gained a new argument formats that allow users to define the formats numbers displayed in tables. Thanks to J. Buros, who contributed the code.ExampleLoadingSession InfoR ve... [Read more...]

Version 0.1.6 of the ChainLadder package has been released and is already available from CRAN.The new version adds the function CLFMdelta. CLFMdelta finds consistent weighting parameters delta for a vector of selected age-to-age chain-ladder factors fo... [Read more...]

I posted about the various googleVis axis options for base charts, such as line, bar and area charts earlier, but I somehow forgot to mention how to set the axes limits.Unfortunately, there are no arguments such as ylim and xlim. Instead, the Google Ch... [Read more...]

The programme and the presentation files of the first R in Insurance conference have been published on GitHub. Front slides of the conference presentations Additionally to the slides many presenters have made their R code available as well: Alexander McNeil shared the examples of the CreditRisk+ model he presented. Lola ... [Read more...]

Despite the hot weather and the beginning of the school holiday season in North Rhine Westphalia the Cologne R user group met yet again for two fascinating talks and beer and schnitzel afterwards.Analysing Twitter data to evaluate the US Dollar / Euro exchange rates Dietmar Janetzko presented ideas to forecast ... [Read more...]

Yesterday the first R in Insurance conference took place at Cass Business School in London. I think the event went really well, but as a member of the organising committee my view is probably skewed. Still, we had a variety of talks, a full house, a gr... [Read more...]

Today Diego and I will give our googleVis tutorial at useR!2013 in Albacete, Spain.googleVis Tutorial at useR! 2013We will cover:Introduction and motivationGoogle Chart ToolsR package googleVisConcepts of googleVisCase studiesgoogleVis on shiny [Read more...]

The useR!2013 conference in Albacete, Spain, will commence next Wednesday, 10 July, and on the day before Diego and I will give a googleVis tutorial. The following Monday, 15 July, the first R in Insurance event will take place at Cass Business School ... [Read more...]

The Google Charts Tools provide two kinds of heat map charts for geographical data, the Flash based Geomap and the HTML5/SVG based Geochart. I prefer the Geochart as it doesn't require Flash, but so far there have been two shortcomings with it: I couldn't add additional tooltip information and ... [Read more...]

Building R packages is not particular hard, but it can be a bit of a daunting endeavour at the beginning, particularly if you are more of a statistician than a computer scientist or programmer. Some concepts may appear foreign or like red tape, yet man... [Read more...]

Following on from last week's post, here are my slides on using googleVis on shiny from the Advanced R workshop at Lancaster University, 21 May 2013. googleVis on shiny Again, I wrote my slides in RMarkdown and I used slidify to create the HTML5 presentation. Unfortunately you may have to reload the ... [Read more...]

Last week I was invited to give an introduction to googleVis at Lancaster University. This time I decided to use the R package slidify for my talk. Slidify, like knitr, is built on Markdown and makes it very easy to create beautiful HTML5 presentations... [Read more...]

Over the last year I worked with two colleagues of mine on the subject of inflation and claims inflation in particular. I didn't expect it to be such a challenging topic, but we ended up with more questions than answers. The key question and biggest ch... [Read more...]

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Often I like to reduce the alpha value (level of transparency) of colours to identify patterns of over-plotting when displaying lots of data points with R. So, here is a tiny function that allows me to add an alpha value to a given vector of colours, e.g. a RColorBrewer ... [Read more...]