# Monthly Archive: November 2016

## Short circuit currents calculation on high voltage lines

Short circuits are one of the most common failures that can happen when dealing with electrical circuits. Short circuits can be accidental, think of a tree branch leaning onto a...continue reading.

## A new subprocess package for R

Here’s a new package that brings to R new API to handle child processes – similar to how Python handles them. Unlike the already available system() and system2() calls from the base package or...continue reading.

## New d3.js visualization: Equivalence, non-inferiority and superiority testing

I recently published a new explorable visualization of equivalence, and non-inferiority testing. The visualization lets you explore the decision rules associated with these different hypotheses. It also shows how the...continue reading.

## Seasonal Analysis in EGRET

Introduction This document describes how to obtain seasonal information from the R package EGRET. For example, we might want to know the fraction of the load that takes place in...continue reading.

## Bill and Ted Make the best out of a Shi… Stata situation: Rstudio + Rstata + Stata

After rewatching the thanksgiving classic, Bill and Ted’s Excellent Adventure, it reminded me of the history of #Rstats and its current status as the defacto software for general data programming....continue reading.

## More about Flexible Frequency Models

Modeling the frequency is one of the most important aspects in operational risk models. In the previous post (https://statcompute.wordpress.com/2016/05/13/more-flexible-approaches-to-model-frequency), the importance of flexible modeling approaches for both under-dispersion and over-dispersion...continue reading.

## How to write and document %special% functions in R

I spend a considerable portion of my working hours with data processing where I often use the %in% R function as x %in% y. Whenever I need the negation of...continue reading.

## Measuring Gobbledygook

In learning more about text mining over the past several months, one aspect of text that I’ve been interested in is readability. A text’s readability measures how hard or easy...continue reading.

## R For Beginners: A Video Tutorial on Installing and Using the Deducer Statistics Package

R For Beginners:  A Video Tutorial on Installing and Using the Deducer Statistics Package with the R Console In previous tutorials I have discussed the use of R Commander and Deducer statistical packages...continue reading.

## Solving electrical radial lines with Python

Electrical transmission systems are something we all take for granted. They work in a reliable manner ensuring high quality of service and as few minutes lost per year as possible....continue reading.

## Creating figures like the paper ‘Completeness of Digital Accessible Knowledge of Plants of Ghana’ Part 3

This is the third part of the of the post where we are replicating the figures from a paper and in this part we are going to create figure 2...continue reading.

## Use Rstats to Share Google Map Stars with Friends

On my trip to Japan, I took this photo of the stairs leading to the “Rucker Park of Tokyo.” I crossed up some Tokyo cats, they were garbage. That one girl...continue reading.

## Determine optimal cutpoints for numerical variables in survival plots

The often demand in the biostatistical research is to group patients depending on explanatory variables that are continuous. In some cases the requirement is to test overall survival of the...continue reading.

## Modified Park Test in SAS

The severity measure in operational loss models has an empirical distribution with positive values and a long tail to the far right. To estimate regression models for severity measures with...continue reading.

## Ocean drifters

The map shows tracks of drifting buoys deployed in the southern ocean between 2005 and 2016. The underlying dataset consists of 15-minute gps data collected from 4608 buoys, available from NOAA…continue reading.

## Crime Analysis – Denver-Part 2

Getting More Granular Where we’re going In having noticed the crime rates heading up over the last few years, taking a better look seemed more important. I want to first...continue reading.

## Introducing trelliscopejs

I’m really excited to announce the beta release of a visualization project I’ve put a lot of work into for the past several months, trelliscopejs. trelliscopejs is an R package...continue reading.

## Crime Analysis – Denver-Part 1

Project Background As we all know, Colorado is considered one of the scariest places on earth. Denver, CO has had an enormous influx of people over the last decade and...continue reading.

## mapmate 0.2.0

mapmate is under development and blog posts can become outdated quickly. Up to date mapmate documentation and tutorial examples can be found at the official mapmate Github pages. mapmate has...continue reading.