1400 search results for "Excel"

Resampling data in Hadoop with RHadoop

February 27, 2013
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On Revolution Analytics partner Cloudera's blog, Uri Laserson has posted an excellent guide to resampling from a large data set in Hadoop. Resampling is an important step in fitting ensemble models (including random forests and other bagging techniques), and Uri provides a step-by-step guide to implementing resampling methods using RHadoop. He provides the complete map-reduce code in the R...

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Exporting nice plots in R

February 25, 2013
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Exporting nice plots in R

It's not always easy getting the right size. The image is CC by Kristina Gill. A vital part of statistics is producing nice plots, an area where R is outstanding. The graphical ablility of R...

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Top 6 reasons you need to be using RStudio

February 25, 2013
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Top 6 reasons you need to be using RStudio

Rstudio provides you with tools to make your work more productive.New to R? -  check out these resources for getting staRted. RStudio is an awesome tool that can help you do your work better and faster.  In technical terms...

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Reproducible research with R, Knitr, Pandoc and Word

February 25, 2013
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Add references and a style sheet Below I briefly outline why Pandoc is an essential part of my research workflow, and demonstrate how to seamlessly integrate it with a bibliographic system and code written in R to produce high quality word or pdf documents. I also...

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the BUGS Book [guest post]

February 24, 2013
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the BUGS Book [guest post]

(My colleague Jean-Louis Fouley, now at I3M, Montpellier, kindly agreed to write a review on the BUGS book for CHANCE. Here is the review, en avant-première! Watch out, it is fairly long and exhaustive! References will be available in the published version. The additions of book covers with BUGS in the title and of the corresponding

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Workflow w/ reports package

February 24, 2013
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Workflow w/ reports package

NOTE: THIS IS NOW A PACKAGE SEE THIS LINK FOR DETAILS Let me start with a video for people who just want to see what I’m demo-ing first: I’ve been interested in speeding up workflow lately and spending a lot … Continue reading →

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from OTU table to HEATMAP!

February 23, 2013
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from OTU table to HEATMAP!

In this tutorial you will learn: what is a heatmap how to create a clean, highly customizable heatmap using heatmap.2 in the gplots package in R how to remove samples with poor output (not very many sequences) how to rearrange your samples by a metadata category how to make a color coded bar above the heatmap

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Why does IFELSE logic work differently on what appear to be the same values?

February 22, 2013
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 Embarrassingly I'm stumped on this...I have a program in R for looking at grade distributions in my class. I found something weird recently with my 'ifelse' processing. I noticed that my program seemed to be over counting Cs and under counting...

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±∞

February 21, 2013
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±∞

The Cauchy distribution (?dcauchy in R) nails a flashlight over the number line and swings it at a constant speed from 9 o’clock down to 6 o’clock over to 3 o’clock. (Or the other direction, from 3→6→9.) Then counts Read more »

Quandl: A Wikipedia for Time Series Data

February 20, 2013
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This guest post is by Tammer Kamel, Founder of Quandl Finding and formatting numerical data for analysis in R or Excel or indeed any application is a pain that all real world data analysts know all too well. In aggregate I have probably spent weeks of my life trying to find data on the web. And several more weeks...

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