4809 search results for "git"

From SVG to probability distributions [with R package]

August 25, 2013
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From SVG to probability distributions [with R package]

Hey, To illustrate generally complex probability density functions on continuous spaces, researchers always use the same examples, for instance mixtures of Gaussian distributions or a banana shaped distribution defined on with density function: If we draw a sample from this distribution using MCMC we obtain a plot like this one: Clearly it doesn’t really look

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Using R in Used Car Search

August 24, 2013
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Using R in Used Car Search

Recently I was looking to buy a used car. I was using the Edmunds website to estimate the true market value of a used car. It has a nice click through interface where it guides you to input make, model, … Continue reading →

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Quantifying uncertainty around R-squared for generalized linear mixed models

August 22, 2013
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Quantifying uncertainty around R-squared for generalized linear mixed models

People love $R^2$. As such, when Nakagawa and Schielzeth published an article in the journal Methods in Ecology and Evolution earlier this year, ecologists (amid increasing use of generalized linear mixed models (GLMMs)) rejoiced. Now there’s an R function that automates $R^2$ calculations for GLMMs fit with the lme4 package. $R^2$ is usually reported as a...

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Date Formats in R

August 22, 2013
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Importing DatesDates can be imported from character, numeric, POSIXlt, and POSIXct formats using the as.Date function from the base package.If your data were exported from Excel, they will possibly be in numeric format. Otherwise, they will m...

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What are the hottest areas for CS Research? (Based on Google Research 2013)

August 21, 2013
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What are the hottest areas for CS Research? (Based on Google Research 2013)

What are some of the hottest areas of research in Computer Science at the moment (August 2013)? And at which universities is this research being carried out?The answers are subjective by definition, but looking at the numbers behind the Google Research...

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Doodling in R!

August 21, 2013
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Doodling in R!

# I am working on creating some functions that will be capable of creating shapes and plots that look hand drawn. # I have made some progress in this goal. # In that process I have also discovered that I can make some doodles that look hand d...

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Groan – my first R package

August 20, 2013
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Groan – my first R package

Being one of two R experts at my current job I figured I should be familiar with package development. Frankly, I've been procrastinating on this topic since I started using R in 2007 - I was doing just fine with source() and the section of the R manua...

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The financial meltdown, to a trance beat

August 20, 2013
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The financial meltdown, to a trance beat

With the FMS Symphony by csv soundsystem you can listen to the Global Financial Crisis as you watch interest rates plunge while the Treasury floods the market with emergency funds. The source data for the chart and music comes from daily emails (like this one) sent by the US Treasury summarizing the cash spending and borrowing of the Federal...

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Time-series forecasting: Bike Accidents

August 20, 2013
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Time-series forecasting: Bike Accidents

About a year ago I posted this video visualization of all the reported accidents involving bicycles in Montreal between 2006 and 2010. In the process I also calculated and plotted the accident rate using a monthly moving average. The results followed a pattern that was for the most part to be expected. The rate shoots up

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Electronic lab notebook

August 20, 2013
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Electronic lab notebook

I was interested to read C. Titus Brown‘s recent post, “Is version control an electronic lab notebook?” I think version control is really important, and I think all computational scientists should have something equivalent to a lab notebook. But I think of version control as serving needs orthogonal to those served by a lab notebook.

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