3616 search results for "GIS"

New R package rainfreq: Rainfall Frequency (or Design Storm) Estimates from the US National Weather Service

May 26, 2014
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New R package rainfreq: Rainfall Frequency (or Design Storm) Estimates from the US National Weather Service

Rainfall estimates at desired frequency (e.g., 1% annual chance or 100-year return period) and duration (e.g., 24-hour) are often required in the design of dams and other hydraulic structures, catastrophe risk modeling, environmental planning and manag...

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Vectorized vs Devectorized

May 24, 2014
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This gist from @hadley has been on my mind for some time. This was already a follow up of this post from @johnmyleswhite. The problem was that sugar vectorised code suffered a performance penalty compared to devectorised code. This is particularly troubling me because the whole point of sugar is to have nice syntax without...

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A phylogenetic ordination in one line: magrittr Challenge!

May 23, 2014
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A phylogenetic ordination in one line: magrittr Challenge!

A picture suitable for a fancy pipe enthusiast My good friend Andrew recently posted this gist: It shows how to solve a simple programming exercise know as FizzBuzz in R, but also is clearly showing off his already amazing proficiency in the very new R package magrittr. Those are some piping hot coding skillz (or should...

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Regularization implementation in R : Bais and Variance diagnosis

May 22, 2014
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Regularization implementation in R : Bais and Variance diagnosis

Welcome to this blog post. In previous posts I discussed about the linear regression and logistic regression in detail. We used Andrew NG’s ML class dataset to fit linear regression and logistic regression. We also discussed about step by step implementation in R along with cost function and gradient descent. In this post I will The post Regularization...

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Quick History 2: GLMs, R and large data sets

May 22, 2014
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by Joseph Rickert In last week’s post, I sketched out the history of Generalized Linear Models and their implementations. In this post I’ll attempt to outline how GLM functions evolved in R to handle large data sets. The first function to make it possible to build GLM models with datasets that are too big to fit into memory was...

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Conference agenda for EARL conference (September 15th – 17th)

May 21, 2014
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Mango Solutions are pleased to announce details of the full EARL (Effective Applications of the R Language) Conference agenda. EARL will be held at The Tower Hotel in London on September 15th – 17th and will showcase an impressive list of R experts from a wide range of business sectors; for full agenda details listing the speakers and presentations please visit www.earl-conference.com/Agenda.html...

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Allez les Bleus !

May 20, 2014
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Allez les Bleus !

In almost three weeks, the (FIFA) World Cup will start, in Brazil. I have to admit that I am not a big fan of soccer, so I will not talk to much about it. Actually, I wanted to talk about colors, and variations on some colors. For instance, there are a lot of blues. In order to visualize standard...

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May 30: 5th MilanoR meeting

May 19, 2014
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May 30: 5th MilanoR meeting

(Leggi la pagina in italiano) Dear R users and enthusiasts, MilanoR staff is happy to announce the next MilanoR meeting. The next MilanoR meeting will be on Friday 30 May, at 6 pm. The meeting will take place at: Fiori … Continue reading →

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R jobs (May 19th 2014)

May 19, 2014
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r_jobs

This is the bimonthly R Jobs post (for 2014-05-19), based on the R-bloggers’ sister website: R-users.com. If you are an employer who is looking to hire people from the R community, please visit this link to post a new R job (it’s free, and registration takes less than 10 seconds). If you are a job seekers, please follow the links below to learn more and apply for your job of interest (or visit previous...

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R is short for SSIS

May 18, 2014
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R is Short for SSIS Data scientists often identify a need to join data from different, unlinked servers. One standard tool for accomplishing this is an SSIS package to consolidate the data onto one of the servers. For the analyst who wants to...

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