Consider the following two spark dataframes:df1.show()+—-+——+——-+|id_a|time_a|value_a|+—-+——+——-+| 1| 1| CA|| 1| 2| CA|| 2| 1| TX|| 3| 5| NE|| 4| 6| WA|+—-+——+——-+df2.show(…continue reading.
We will study how to use LifeCycle Grids concept for measuring a health of the business via Delta Analysis technicThere are several posts connected with LifeCycle Grids on this blog. If you...continue reading.
Want to change the font used in your R plots? I got a quite simple solution that works on Mac OS.You need the function ‘quartzFonts’. With this function, you can...continue reading.
In the Loss Distributional Approach (LDA) for Operational Risk models, multiple distributions, including Log Normal, Gamma, Burr, Pareto, and so on, can be considered candidates for the distribution of severity...continue reading.
Another 1,000 packages were added to CRAN, which took less than 9 months. Today (August 12, 2015), the Comprehensive R Archive Network (CRAN) package page reports: “Currently, the CRAN package...continue reading.
Reading Time: 2 minutes Occasionally when I am jotting some code I find myself creating several temporary variables with the intention of later getting rid of them. These variables involve...continue reading.
Reading Time: 2 minutes Occasionally when I am jotting some code I find myself creating several temporary variables with the intention of later getting rid of them. These variables involve...continue reading.
Packages JM and JMbayes @ JSM2015This year JSM features an interesting invited session about fitting joint models in different software packages — if you’re interested drop by… Here are my...continue reading.
For a long time, people have been sending me requests for a suitable smoothing / contouring / interpolation geometry be made available via ggtern, over and above the Kernel Density...continue reading.
I don’t understand why any researcher would choose not to use panel/multilevel methods on panel/hierarchical data. Let’s take the following linear regression as an example: , where is a random...continue reading.
A couple weeks ago I was given the opportunity to teach a 1 hr 30 min slot of an introduction to R course. In the past, I’ve taught lectures for...continue reading.
Wikipedia is, indeed, one of the largest free access crowdsourcing [1] sources of information in today’s world. Every day, thousands of people land on its pages to get information about...continue reading.
In my last post, I compiled and cleaned publicly available data on over 4.5 million stops over the past 11 years. I also presented preliminary summary statistics showing that blacks had...continue reading.
Sales (purchasing or conversion) Funnel is a consumer-focused marketing model which illustrates the theoretical customer journey towards the purchase of a product or service. We will study a very simple example...continue reading.
The subtitle of this post can be “How to plot multiple elements on interactive web maps in R”.In this experiment I will show how to include multiple elements in interactive...continue reading.
If your native code takes more than a few seconds to finish, it is a nice courtesy to the user to check for user interrupts (Ctrl-C) once in a while,...continue reading.
Theoretical BackgroundIn some cases we would like to classify the events we have in our dataset based on their spatial location or on some other data. As an example we...continue reading.
My wife got me a Safe Cracker 40 puzzle a while back. I believe I misplaced the solution some time back. The company, Creative Crafthouse, stands behind their products. They...continue reading.
I first became interested in networks when reading Matthew O’Jackson’s 2010 paper describing their application to economics. During the 2014 ebola outbreak, there was a lot of concern over the disease spreading to the...continue reading.
In the post Exchange data between R and the Google Maps API using Shiny I presented a very simple way to allow communication between R and javascript using Shiny.This is...continue reading.
GIS / R / R News / Shiny / Visualization
Interactive visualization of geospatial data with R Shiny
April 17, 2021
