1322 search results for "RStudio"

Running Go language chunks in R Markdown (Rmd) files

June 8, 2015
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After seeing IPython Markdown Opportunities in IPython Notebooks and Rstudio in the feeds today I wondered how easy/hard it would be to write a handler for something like go code. After taking a look at Yihui Xie‘s knitr source it seemed like it would be fairly easy to mimic a combination of Rcpp and “shell”...

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A Better ZigZag

June 6, 2015
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A Better ZigZag

There are a lot of “winning” strategies for bull markets floating around. “Buy the pullbacks” is certainly one of them. Does this sound simple enough to implement to you? While I am no Sheldon Cooper (although I have a favorite couch seat), I still like to live in a somewhat well defined world, a world The post

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Any R code as a cloud service: R demonstration at BUILD

June 5, 2015
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Any R code as a cloud service: R demonstration at BUILD

At last month's BUILD conference for Microsoft developers in San Francisco, R was front-and-center on the keynote stage. In the keynote, Microsoft CVP Joseph Sirosh introduced the "language of data": open source R. Sirosh encouraged the audience to learn R, saying "if there is a single language that you choose to learn today .. let it be R". The...

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Macros in R

June 5, 2015
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Macros in R

In programming, sometimes it’s useful to write a macro rather than a function. (Don’t worry if you’ve never heard the term before.) In this post, I’ll give an example of use of macros in R. using the gtools package on CRAN. I wanted to write some utility code to help me reuse my earlier R commands during … Continue reading...

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New package commonmark: yet another markdown parser?

June 2, 2015
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New package commonmark: yet another markdown parser?

Last week the commonmark package was released on CRAN. The package implements some very thin R bindings to John Macfarlane’s (author of pandoc) cmark library. From the cmark readme: cmark is the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. It provides a shared library...

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“Mail merge” with RMarkdown

June 1, 2015
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“Mail merge” with RMarkdown

The term “mail merge” might not be familiar to those who have not worked in an office setting, but here is the Wikipedia definition: Mail merge is a software operation describing the production of multiple (and potentially large numbers of) documents from … Continue reading →

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Hosting Shiny on Amazon EC2

May 30, 2015
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Hosting Shiny on Amazon EC2

I recently finished some work on a Shiny application which incorporated a Random Forest model. The model was stored in a RData file and loaded by server.R during initialisation. This worked fine when tested locally but when I tried to deploy the application on shinyapps.io I ran into a problem: evidently you can only upload The post

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testthat 0.10.0

May 29, 2015
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testthat 0.10.0

testthat 0.10.0 is now available on CRAN. Testthat makes it easy to turn the informal testing that you’re already doing into formal automated tests. Learn more at http://r-pkgs.had.co.nz/tests.html. Install the latest version with: install.packages("testthat") There are four big changes in this release: test_check() uses a new reporter specifically designed for R CMD check. It displays

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R courses

R courses

For persons interested in advancing their knowledge on R and data science with R, BNOSAC offers a range of courses for R users. These cover courses on - R analytics (Statistical Machine Learning with R, Text mining with R, Applied Spatial modelling...

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SparkR preview by Vincent Warmerdam

May 28, 2015
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SparkR preview by Vincent Warmerdam

SparkR preview in Rstudio Apache Spark is the hip new technology on the block. It allows you to write scripts in a functional style and the technology behind it will allow you to run iterative tasks very quickly on a cluster of machines. It’s benchmarked to be quicker than hadoop for most machine learning use

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