1323 search results for "RStudio"

drat 0.0.3: More features, more fixes, more documentation

April 10, 2015
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Several weeks ago we introduced the drat package. Its name stands for drat R Archive Template, and it helps with easy-to-create and easy-to-use repositories for R packages. Two early blog posts describe drat: First Steps Towards Lightweight Repositor...

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sparklines for R

April 10, 2015
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I’ve always liked the jQuery Sparklines library and today I had a use case for implementing these in one of my Rmarkdown reports. While it wouldn’t be too difficult to staticly include a javascript based chart, ideally I would simply want to dynamically generate the sparkline using values computed in R. Luckily we now have htmlwidgets for...

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readr 0.1.0

April 9, 2015
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readr 0.1.0

I’m pleased to announced that readr is now available on CRAN. Readr makes it easy to read many types of tabular data: Delimited files withread_delim(), read_csv(), read_tsv(), and read_csv2(). Fixed width files with read_fwf(), and read_table(). Web log files with read_log(). You can install it by running: install.packages("readr") Compared to the equivalent base functions, readr

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Forecasting the Argentinian “Blue Dollar”

April 9, 2015
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If you have visited recently my website, Bluelytics, you will notice there is a new section named "Predicción", which is a forecast of the value of the Blue Dollar in a 12-month horizon. You can find it at http://bluelytics.com.ar/#/forecast You will find that it has a minimun value and a maximun value for each month, and it's included in...

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A small neuroimage interactive plotter

April 9, 2015
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A small neuroimage interactive plotter

Manipulate Package The manipulate from RStudio allows you to create simple Tcl/Tk operators for interactive visualization. I will use it for a simple slider to view different slices of an image. fslr package I'm calling the fslr package because I know that if you have it installed, you will likely have FSL and have a

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New video course: Campaign Response Testing

April 8, 2015
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New video course: Campaign Response Testing

I am proud to announce a new Win-Vector LLC statistics video course: Campaign Response Testing John Mount, Win-Vector LLC This course works through the very specific statistics problem of trying to estimate the unknown true response rates one or more populations in responding to one or more sales/marketing campaigns or price-points. This is an old … Continue reading...

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matlabr: a Package to Calling MATLAB from R with system

April 8, 2015
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matlabr: a Package to Calling MATLAB from R with system

In my research, I primarily use R, but I try to use existing code if available. In neuroimaging and other areas, that means calling MATLAB code. There are some existing solutions for the problem of R to MATLAB: namely the R.matlab package and the RMatlab package (which can call R from MATLAB as well). I

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Discovering Shiny

April 8, 2015
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Discovering Shiny

It is not an experiment if you know it is going to work (Jeff Bezos) From time to time, I discover some of my experiments translated into Shiny Apps, like this one. Some days ago, I discovered one of these translations and I contacted the author, who was a guy from Vietnam called Vu Anh. … Continue reading...

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White Matter Segmentation in R

April 7, 2015
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White Matter Segmentation in R

Goals and Overall Approach We will use multiple packages and pieces of software for white matter (and gray matter/cerebro spinal fluid (CSF)) segmentation. The overall approach will be, with the required packages in parentheses: N4 Inhomogeneity Bias-Field Correction (extrantsr and ANTsR) Brain extraction using BET and additional tools (extrantsr and fslr) FAST for tissue-class segmentation.

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Design patterns for action buttons

April 7, 2015
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Design patterns for action buttons

Action buttons can be tricky to use in Shiny because they work differently than other widgets. Widgets like sliders and select boxes maintain a value that is easy to use in your code. But the value of an action button is arbitrary. What should you do with it? Did you know that you should almost

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