August 2018

First post in new r-tastic

August 24, 2018 | r-tastic

OK, it had to happen and here it is: I moved my old r-tastic blog to blogdown and I’m not going to look back :) There are numerous resources that will: highlight the advantages of using blogdown with Hugo over other static site generators, such as J... [Read more...]

About

August 24, 2018 | r-tastic

About r-tastic Data without insights are just meaningless series of numbers or characters. I love diving deep into new datasets, discovering new patterns and exceptions. Getting familiar with data and saying “I know something about you now”, at the end. And that’s exactly what I’m going to do ... [Read more...]

Datazar R/Python Scripts Now Executable

August 24, 2018 | Datazar

R and Python scripts you upload or create on Datazar are now executable.R files with an .r or .rscript and Python files with .pyextensions will be active for running. You can now analyze your datasets, import other people’s public data, load libra...
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The Chartmaker Directory: Data visualizations in every tool

August 24, 2018 | David Smith

Working with a new data visualization tool, and wondering how to create a specific type of chart? The Chartmaker Directory (designed by Andy Kirk) indexes more than 35 tools and over 50 charts, and provides links to examples from each combination. Here's an intentionally small detail from the index, where each hollow ... [Read more...]

Getting data from PDFs the easy way with R

August 24, 2018 | Andrew Treadway

Earlier this year, a new package called tabulizer was released in R, which allows you to automatically pull out tables and text from PDFs. Note, this package only works if the PDF’s text is highlightable (if it’s typed) — i.e. it won’t work for scanned-in PDFs, or ...
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CodeR: an LSTM that writes R Code

August 24, 2018 | Tobias Krabel

Everybody talks about them, many people know how to use them, few people understand them: Long Short-Term Memory Neural Networks (LSTM). At STATWORX, with the beginning of the hype around AI and projects with large amounts of data, we also started using this powerful tool to solve business problems. In ...
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Couplings of Normal variables

August 23, 2018 | Pierre Jacob

Hi, Just to play a bit with the gganimate package, and to celebrate National Coupling Day, the above plot shows different couplings of two univariate Normal distributions, Normal(0,1) and Normal(2,1). That is, each point is a pair (x,y) where x follows a Normal(0,1) and y follows a Normal(2,1). Below ... [Read more...]

Beyond Basic R – Version Control with Git

August 23, 2018 | The USGS OWI blog

Depending on how new you are to software development and/or R programming, you may have heard people mention version control, Git, or GitHub. Version control refers to the idea of tracking changes to files through time and various contributors. Git is an example of a version control tool, and ... [Read more...]

Growing Objects and Loop Memory Pre-Allocation

August 23, 2018 | insightr

By Thiago Milagres Preallocating Memory This will be a short post about a simple, but very important concept that can drastically increase the speed of poorly written codes. It is very common to see R loops written as follows: This … Continue reading →
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Timings of a Grouped Rank Filter Task

August 23, 2018 | John Mount

Introduction This note shares an experiment comparing the performance of a number of data processing systems available in R. Our notional or example problem is finding the top ranking item per group (group defined by three string columns, and order defined by a single numeric column). This is a common ...
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Analysis of Los Angeles Crime with R

August 23, 2018 | Chi Ting Low

City of Los Angeles or “The Birthplace of Jazz” is one of the most populous city in the United States of America with the population estimated over four million. With the city of this size, it is worth the effort to explore the crime rate in this city. The current ...
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digest 0.6.16

August 22, 2018 | Thinking inside the box

digest version 0.6.16 arrived on CRAN earlier today, and was just prepared for Debian as well. digest creates hash digests of arbitrary R objects (using the 'md5', 'sha-1', 'sha-256', 'sha-512', 'crc32', 'xxhash32', 'xxhash64' and 'murmur32' algorith... [Read more...]

Data Wrangling with dplyr – Part 1

August 22, 2018 | Rsquared Academy Blog

Introduction According to a survey by CrowdFlower, data scientists spend most of their time cleaning and manipulating data rather than mining or modeling them for insights. As such, it becomes important to have tools that make data manipulation faster and easier. In today’s post, we introduce you to dplyr, ...
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