Monthly Archives: March 2011

Day #13 more plots, colors and loess smoothing

March 29, 2011
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Yesterday I tried to insert some more R code into knime. scatterplot smoothed density library("geneplotter")  ## from BioConductor require("RColorBrewer") ## from CRAN x1  <- matrix(rnorm(1e4), ncol=2) x2  <- matrix(rnorm(1e4, mean=3, sd=1.5...

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Day #14 another R-course

March 29, 2011
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So today I’m going to follow another R-course which is supposed to tell me more about Flowcytometry in R. I’ll keep you up to date

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merge with solaR

merge with solaR

The version 0.22 of solaR includes a new method, mergesolaR. It is designed to merge daily time series of several solaR objects. For example, we can obtain the daily irradiation of the whole set of meteorological stations of Madrid (Spain) and use this information to calculate the productivity of a grid connected PV system. It

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Example 8.32: The HistData package, sunflower plots, and getting data from R into SAS

March 29, 2011
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Example 8.32: The HistData package, sunflower plots, and getting data from R into SAS

This entry is mainly a promotion of the fascinating HistData R package. The package, compiled by the psychologist, statistician, and graphics innovator Michael Friendly, contains a number of small data sets of historical interest. These include data ...

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Machine Learning Ex3 – Multivariate Linear Regression

March 29, 2011
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Machine Learning Ex3 – Multivariate Linear Regression

Part 1. Finding alpha. The first question to resolve in Exercise 3 is to pick a good learning rate alpha. This require making an initial selection, running gradient descent and observing the cost function. Read More: 221 Words Totally

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Two R functions for working with DNA alignments

March 28, 2011
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Recently I wrote a couple of small functions as a result of work done by myself and others in my lab group. The first is a function that determines what sites in a sequence alignment are ambiguous (i.e. not A, G, C or T). require(ape)data(woodmouse)is.ambig    x    bases    ambig    ambig > 0}is.ambig(woodmouse)This function utilises the bit-level coding scheme that...

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Reminder: useR! 2011 abstracts, earlybird registration deadline April 1

March 28, 2011
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If you're planning to attend the worldwide R user conference useR! 2011, don't forget that April 1 (this Friday) is the deadline for submitting abstracts for contributed talks and posters. Early-bird discounts for attendee registrations expire on Friday as well. (Revolution Analytics is a proud sponsor of useR! 2011, and chief scientist Lee Edlefsen is one of the keynote...

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Time series

March 28, 2011
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Time series

(This post got published on The Statistics Forum yesterday.) The short book review section of the International Statistical Review sent me Raquel Prado’s and Mike West’s book, Time Series (Modeling, Computation, and Inference) to review. The current post is not about this specific book, but rather on why I am unsatisfied with the textbooks in

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Using R and snow on Ohio Supercomputer Center’s Glenn cluster

March 28, 2011
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Over the last several days, I have had the “pleasure” of getting parallel processing with R running on the the Ohio Supercomputer Center’s (OSC) Glenn cluster. I am working on a project that uses GenMatch from Sekhon’s Matching, which uses … Continue reading →

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Day #12 5 ways to visualize plots in knime

March 28, 2011
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Today I’m checking which plot function works fastest, I did this via this blogpost. https://www.r-bloggers.com/five-ways-to-visualize-your-pairwise-comparisons/ But I’m not doing this in an Rgui, but in Knime. I read in an example ACS file, ...

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