Abstract We perform a social experiment to investigate, if zombie related twitter posts can used as a reliable indicator for an early warning system. We show how such a system can be set up almost out-of-the-box using R - a free software environment for statistical computing and graphics. Warning: This ...

After having carefully followed the online official Shiny tutorial, I decided to make a quick try at making my very first Shiny App. I should say that I found myself very well with the explanation given and Shiny was definitely one of the libraries tha...

R is a great tool to visualize your data: it is free to use and has lots packages to make beautiful plots. In this post, we gonna teach you how to make time plots to visualize stock returns with data from Yahoo finance. For those not familiar with how to ...

Python, R, Qt, peewee, bokeh, pandas, SQLite plus couple of sleepless nights and here you are a сute app for the environmental monitoring needs )))Main window of the application

Dataset here. We are going to perform a linear mixed effects analysis of the relationship between height and treatment of trees, as studied over a period of time. Begin by reading in the data and making sure that the variables have the appropriate datatype. tree

One of the most important features we need to be able to do in R is import existing data, whether it be .txt files, .csv files, or even .xls (Excel files). If we can’t import data into R, then we can’t do anything. Okay let’s get started. ...

Arthur C. Clarke famously stated that “any sufficiently advanced technology is indistinguishable from magic.” No current technology embodies this statement …Continue reading →

Correspondence analysis is an exploratory data analysis method for discovering relationships between two or more categorical variables. It is very often used for visualizing survey data since if the matrix is large enough (which could be due to large number of variables but also possible with small number of variables ...

In this entry, as part of the series on dynamic systems modeling with R and simecol, we'll take a look at population growth models, our main focus being on human population growth models and how they tie into other theoretical frameworks such as demographic transition theory and carrying capacity. These ...

A straightforward but probabilistic riddle this week in the Riddler, which is to find the expected order of integer i when the sequence {1,2,…,n} is partitioned at random into two sets, A and B, each of which is then sorted before both sets are merged. For instance, if {1,2,3,4} is divided ...

It came to my attention that size of XDF (external data frame) file can change drastically based on the compute context and environment. When testing the output of a dataset I was working on in SQL Server Management Studio I was simultaneously testing R code in RTVS or  R Studio ...