1879 search results for "tutorial"

Making random draws from an arbitrarily defined pdf

July 23, 2014
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Making random draws from an arbitrarily defined pdf

I recently found myself in need of a function to sample randomly from an arbitrarily defined probability density function. An excellent post by Quantitations shows how to accomplish this using some of Rs fairly sophisticated functional approximation to...

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Rcpp11 t-shirt sightseeing

July 22, 2014
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Rcpp11 t-shirt sightseeing

While we wait for CRAN to process the release of Rcpp11 3.1.1, here are some news about the Rcpp11 t-shirt. With more than 40 attendees, the Rcpp11 tutorial was a success. I managed to distribute almost all t-shirts I printed for the occasions. I onl...

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UseR 2014, days 3-4

July 21, 2014
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UseR 2014, days 3-4

Three weeks ago, I’d commented on the first two days of the UseR 2014 conference. I’m finally back to talk about the second half. Dirk Eddelbuettel on Rcpp Dirk Eddelbuettel gave a keynote on Rcpp . The goal of Rcpp is to have “the speed of C++ with the ease and clarity of R.” He

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How to update and backup a MySQL database under version control and all within Rstudio

July 21, 2014
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How to update and backup a MySQL database under version control and all within Rstudio

I am trying to have better workflows to ensure data quality and two important things for me are first, scripting as much as posible the data manipulation process, and second, backing up the database we use under version control (e.g. … Continue reading →

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Consistent naming conventions in R

July 15, 2014
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Consistent naming conventions in R

Naming conventions in R are famously anarchic, with no clear winner and multiple conventions in use simultaneously in the same package. This has been written about before, in a lucid article in the R Journal, a detailed exploration of names in R source code hosted on CRAN and general discussion on stackoverflow. Basically, there are 5 naming...

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R Notes: vectors

July 12, 2014
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  R is different from C family languages. It has a C syntax, but a Lisp semantics. Programmers from C/C++/Java world would find many usages in R adhoc and need to memorize special cases. This is because they use R from a C's perspective. R is a very...

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ABC in Cancún

July 10, 2014
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ABC in Cancún

Here are our slides for the ABC short course Jean-Michel and I give at ISBA 2014 in Cancún next Monday (if your browser can manage Slideshare…) Although I may switch the pictures from Iceland to Mexico, on Sunday, there will be not much change on those slides we both have previously used in previous

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In case you missed it: June 2014 Roundup

July 9, 2014
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In case you missed them, here are some articles from June of particular interest to R users: The useR! 2014 conference in Los Angeles opened with 16 tutorials. DataInformed published an article by David Smith on how various companies use R. Joe Rickert reviews the new book "Applied Predictive Modeling" by Max Kuhn and Kjell Johnson, which is rich...

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R Day at Strata NYC

July 8, 2014
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R Day at Strata NYC

RStudio will teach the new essentials for doing data science in R at this year’s Strata NYC conference, Oct 15 2014. R Day at Strata is a full day of tutorials that will cover some of the most useful topics in R. You’ll learn how to manipulate and visualize data with R, as well as

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analyze the demographic and health surveys (dhs) with r

July 8, 2014
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professors of public health 101 probably cite the results of the demographic and health surveys (dhs) more than all other data sources combined.  funded by the united states agency for international development (usaid) and administered by the tech...

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