2447 search results for "GIS"

Choosing colour palettes. Part I: Introduction

May 29, 2012
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Choosing colour palettes. Part I: Introduction

In this series of three posts, we’ll look at colours in R graphics produced with ggplot2: what are the available choices of colour schemes, and how to choose a colour palette most suitable for a particular graphic?In kindergarten, choosing a co...

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Example 9.33: Multiple imputation, rounding, and bias

May 29, 2012
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Example 9.33: Multiple imputation, rounding, and bias

Nick has a paper in the American Statistician warning about bias in multiple imputation arising from rounding data imputed under a normal assumption. One example where you might run afoul of this is if the data are truly dichotomous or count variables, but you model it as normal (either because your software is unable to model dichotomous...

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Interactive HTML presentation with R, googleVis, knitr, pandoc and slidy

May 29, 2012
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Interactive HTML presentation with R, googleVis, knitr, pandoc and slidy

Tonight I will give a talk at the Cambridge R user group about googleVis. Following my good experience with knitr and RStudio to create interactive reports, I thought that I should try to create the slides in the same way as well. Christopher Gandrud's...

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Industrial Statistics Seminars

May 28, 2012
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Andrea Spanò, founder and partner at Quantide, held two seminars about Industrial Statistics at the University of Bergamo. Process Capability Analysis and Gage R&R were topics of seminars. Registered Milano R net users can download presentations from this page.

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ICES and NAFO statistical areas viewed in Google Earth

May 28, 2012
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ICES and NAFO statistical areas viewed in Google Earth

On the ICES Spatial Facility webpage one can obtain a view of the ICES statistical areas. Now since the projection used is more than a bit misleading I was wandering how these statistical areas would look like in Google Earth. Thankfully the ...

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Again on polar/star/pie charts

May 28, 2012
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Again on polar/star/pie charts

Haven't had much time to devote to new visualisations, mostly because work and baby have taken the precedence.But I just wanted to take a few minutes to share the latest version of the script I showed last time.It now saves to a pdf file, but that's no...

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Updating to R 2.15, warnings in R and an updated function list for Serious Stats

May 27, 2012
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Updating to R 2.15, warnings in R and an updated function list for Serious Stats

Whilst writing the book  the latest version of R changed several times. Although I started on an earlier version, the bulk of the book was written with 2.11 and it was finished under R 2.12. The final version of the R scripts were therefore run and checked using R 2.12 and, in the main, the most recent

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Trend Following Factors from Hsieh and Fung

May 25, 2012
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Trend Following Factors from Hsieh and Fung

The beauty of R and academic replication is that on the Friday before Memorial Day weekend I can read an academic paper and do some analysis all before breakfast.  In this case, the paper is Hsieh, David A. and Fung, William, The Risk in Hedge F...

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Quick dprint Experiment

May 24, 2012
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Quick dprint Experiment

As a quick dprint experiment, I thought I would try to do a quarterly return table that might potentially fit in knitR Performance Report 3 (really with knitr) and dprint.  Although I do not think I will use it in the final report, I do think it i...

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knitR Performance Report 3 (really with knitr) and dprint

May 23, 2012
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knitR Performance Report 3 (really with knitr) and dprint

please see knitr Performance Report–Attempt 3, knitr Performance Report-Attempt 2 and knitr Performance Report-Attempt 1 alstated’s asked a very good question in his comment on knitr Performance Report–Attempt 3, and I’m not sure I could have a...

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