Shiny Application Layouts Exercises (Part-2)

April 26, 2017
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Shiny Application Layouts Exercises (Part-2)

SHINY APPLICATION LAYOUTS-PLOT PLUS COLUMNS In the second part of our series we will build another small shiny app but use another UI. More specifically we will present the example of a UI with a plot at the top and columns at the bottom that contain the inputs that drive the plot. For our case Related exercise sets:

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Binning Outliers in a Histogram

April 26, 2017
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Binning Outliers in a Histogram

I guess we all use it, the good old histogram. One of the first things we are taught in Introduction to Statistics and routinely applied whenever coming across a...

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Survival Analysis with R

April 25, 2017
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Survival Analysis with R

With roots dating back to at least 1662 when John Graunt, a London merchant, published an extensive set of inferences based on mortality records, Survival Analysis is one of...

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Using checkpoint with knitr and RStudio

April 25, 2017
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Using checkpoint with knitr and RStudio

The knitr package by Yihui Xie is a wonderful tool for reproducible data science. I especially like using it with R Markdown documents, where with some simple markup in...

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Forecasting for small business Exercises (Part-3)

April 25, 2017
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Forecasting for small business Exercises (Part-3)

Uncertainty is the biggest enemy of a profitable business. That is especially true of small business who don’t have enough resources to survive an unexpected diminution of revenue or...

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Classification Using Nearest Neighbors k-NN

April 25, 2017
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Classification Using Nearest Neighbors k-NN

We will develop a well-known k-NN exercise originally published in "Machine Learning in R" by Brett Lantz, PACKT publishing 2015.K-nearest...

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plotly 4.6.0 now on CRAN

April 25, 2017
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plotly 4.6.0 now on CRAN

I’m super excited to announce that plotly 4.6.0 is now on CRAN! Go ahead and install it with: install.packages("plotly") This release brings a ton of new features and improvements...

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SPEAKER ANNOUNCEMENT: San Francisco EARL

April 25, 2017
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SPEAKER ANNOUNCEMENT: San Francisco EARL

We’re delighted to announce our line up for the first San Francisco EARL Conference. As always, we received a large number of excellent abstracts so the Mango team spent...

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Setup encrypted Rstudio and Shiny dashboard solution in 3 minutes

April 25, 2017
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Setup encrypted Rstudio and Shiny dashboard solution in 3 minutes

I have created a repository (https://github.com/56north/encrypted_dashboard) with code that automatically sets up Rstudio Server and Shiny Server behind and Nginx proxy with SSL certificates. The two servers share apps...

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RcppTOML 0.1.3

April 24, 2017
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A new bug fix release of RcppTOML arrived on CRAN today. Table arrays were (wrongly) not allowing for nesting; a simply recursion fix addresses this. RcppTOML brings...

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Rent Prices and TrelliscopeJS

April 24, 2017
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Rent Prices and TrelliscopeJS

Rent Prices are Soaring in Most of Colorado Call it gentrification, supply-and-demand, call it whatever you’d like… the fact is, rent prices have gone up in Colorado in the...

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R 3.4.0 is released – with new speed upgrades and bug-fixes

April 24, 2017
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R 3.4.0 is released – with new speed upgrades and bug-fixes

R 3.4.0 (codename “You Stupid Darkness”) was released 3 days ago. You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of bug fixes and...

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Data Science for Operational Excellence (Part-3)

April 24, 2017
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Data Science for Operational Excellence (Part-3)

Optimized transportation planning is a task usually left to the firm’s logistic department. However, it is often difficult to visualize, specially if there are many points involved in the...

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Order Type and Parameter Optimization in quantstrat

April 24, 2017
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Order Type and Parameter Optimization in quantstrat

In this post we look at stop-loss orders in quantstrat, and how to pick optimal parameters for a strategy.

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Choroplethr v3.6.1 is now on CRAN

April 24, 2017
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Choroplethr v3.6.1 is now on CRAN

Choroplethr version 3.6.1 is now on CRAN. This version makes it easier to Calculate the percent change in demographic datasets Visualize that percent change on a... The post Choroplethr...

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R 3.4.0 now available

April 24, 2017
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R 3.4.0, the latest release of the R programming language (codename: "You Stupid Darkness"), is now available. This is the annual major update to the R language engine, and...

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Online courses (in R, python, and data science) at Udemy for only $10 – until April 29th

April 24, 2017
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udemy-november-coupon-2015

In order to get the discount, simply click choose a link below and when paying use the promo code: 10APR303 Udemy is offering readers of R-bloggers access to its global online...

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More cartograms of New Zealand census data (district and city level)!

April 24, 2017
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More cartograms of New Zealand census data (district and city level)!

Just a short note to say that I’ve finished creating an experimental map of New Zealand by the 66 Territorial Authorities (districts and cities), with area expanded or shrunk...

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errors 0.0.1

April 24, 2017
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In physics, engineering and other disciplines, a single number, a bare quantity, is useless, meaningless. When you measure something, your results will be within the precision of your equipment,...

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Building an R training environment

April 24, 2017
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Building an R training environment

I recently delivered a day of training at SQLBits and I really upped my game in terms of infrastructure for it. The resultant solution was super smooth and mitigated...

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NLP with AirBnb

April 23, 2017
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NLP with AirBnb

Basic NLP in R With text survey data about AirBnb R is a very powerful programming language with many great built in statistical functions and a The post

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Do Resampling Estimates Have Low Correlation to the Truth? The Answer May Shock You.

April 23, 2017
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Do Resampling Estimates Have Low Correlation to the Truth? The Answer May Shock You.

One criticism that is often leveled against using resampling methods (such as cross-validation) to measure model performance is that there is no correlation between the CV results and the...

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Hacking maps with ggplot2

April 23, 2017
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Hacking maps with ggplot2

This is a very short post on mapping with ggplot2.

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Experimental Design Exercises

April 23, 2017
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Experimental Design Exercises

In this set of exercises we shall follow the practice of conducting an experimental study. Researcher wants to see if there is any influence of working-out on body mass....

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Using R: a function that adds multiple ggplot2 layers

April 23, 2017
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Using R: a function that adds multiple ggplot2 layers

Another interesting thing that an R course participant identified: Sometimes one wants to make a function that returns multiple layers to be added to a ggplot2 plot. One could...

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A classical analysis (Radio Swiss classic program)

April 22, 2017
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A classical analysis (Radio Swiss classic program)

I am not a classical music expert at all, but I happen to have friends who are, and am even married to someone playing the cello (and the ukulele!)....

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Explaining complex machine learning models with LIME

April 22, 2017
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Explaining complex machine learning models with LIME

The classification decisions made by machine learning models are usually difficult - if not impossible - to understand by our human brains. The complexity of some of the most...

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R code to accompany Real-World Machine Learning (Chapter 6): Exploring NYC Taxi Data

April 22, 2017
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R code to accompany Real-World Machine Learning (Chapter 6): Exploring NYC Taxi Data

Abstract The rwml-R Github repo is updated with R code for exploratory data analysis of New York City taxi data from Chapter 6 of the book “Real-World Machine Learning” by...

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Shiny server series part 3: adding SSL encryption

April 22, 2017
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Shiny server series part 3: adding SSL encryption

This guide is part of a series on setting up your own private server running shiny apps. There are many guides with great advice on how to set up...

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