December 2016

Our R package roundup (2016)

December 31, 2016 | Christoph Safferling

A year in review And yet again, it’s that time of the year when one eats too much and gets in a reflective mood! 2016 is nearly over, and us bloggers here at opiateforthemass.es thought it would be nice to argue endlessly which R package was th... [Read more...]

Turning KML into tidy data frames

December 30, 2016 | Françoisn - [email protected]

This note briefly introduces the tidykml package, which turns basic KML geometries into tidy data frames that can be visualized with ggplot2. Summary The tidykml package provides a quick way to import data from Google My Maps into R, in a format that makes it easy to manipulate the data ... [Read more...]

Power BI custom visuals, based on R

December 30, 2016 | David Smith

You've been able to include user-defined charts using R in Power BI dashboards for a while now, but a recent update to Power BI includes seven new custom charts based on R in the customs visuals gallery. You can see the new chart types by visiting the Power BI Custom ... [Read more...]

Fireworks (in R)

December 30, 2016 | Jeroen Kromme

New Year – a new chapter, new verse, or just the same old story ? Ultimately we write it. The choice is ours. ― Alex Morritt The Analytics Lab and Cmotions wish everybody a happy year. A year full of challenges, new experiences and new knowledge. Github library(ggplot2) rm(list = ls()) # First ... [Read more...]

dotplot for GSEA result

December 29, 2016 | R on Guangchuang Yu

For GSEA analysis, we are familar with the above figure which shows the running enrichment score. But for most of the software, it lack of visualization method to summarize the whole enrichment result. In DOSE (and related tools including clusterPro...
[Read more...]

dotplot for GSEA result

December 29, 2016 | R on Guangchuang Yu

For GSEA analysis, we are familar with the above figure which shows the running enrichment score. But for most of the software, it lack of visualization method to summarize the whole enrichment result. In DOSE (and related tools including clusterP...
[Read more...]

Pokemon and TrelliscopeJS

December 29, 2016 | r on Ryan Hafen

I’m always looking for ways to spark my kid’s interest in computers, data, etc. This has proven to be more difficult than I thought it would be (kids these days…). I suspect this may have something to do with the ubiquity of electronic devices that “just work”, making ... [Read more...]

Pokemon and TrelliscopeJS!

December 29, 2016 | ryan hafen

I’m always looking for ways to spark my kid’s interest in computers, data, etc. This has proven to be more difficult than I thought it would be (kids these days…). I suspect this may have something to do with the ubiquity of electronic devices that “just work”, making ... [Read more...]

a Galton-Watson riddle

December 29, 2016 | xi'an

The Riddler of this week has an extinction riddle which summarises as follows: One observes a population of N individuals, each with a probability of 10⁻⁴ to kill the observer each day. From one day to the next, the population decreases by one individual with probability K√N 10⁻⁴ What is the ...
[Read more...]

Sampling from shifted Gompertz distribution

December 29, 2016 | Jakub Glinka's Blog

using Accept-Reject method - Shifted Gompertz distribution Shifted Gompertz distribution is useful distribution which can be used to describe time needed for adopting new innovation within the market. Recent studies showed that it outperforms Bass model of diffusion in some cases1. Its pdf is given by Below we show what ... [Read more...]

7 Visualizations You Should Learn in R

December 29, 2016 | Dikesh Jariwala

7 Visualizations You Should Learn in R With ever increasing volume of data, it is impossible to tell stories without visualizations. Data visualization is an art of how to turn numbers into useful knowledge. R Programming lets you learn this art by offering a set of inbuilt functions and libraries to ... [Read more...]

Quadratic Discriminant Analysis of Two Groups

December 29, 2016 | Aaron Schlegel

As mentioned in the post on classification with linear discriminant analysis, LDA assumes the groups in question have equal covariance matrices . Therefore, often when the groups do not have equal covariance matrices, observations are frequently assigned to groups with large variances on the diagonal of its corresponding covariance matrix... The ... [Read more...]

Using R to prevent food poisoning in Chicago

December 29, 2016 | David Smith

There are more than 15,000 restaurants in Chicago, but fewer than 40 inspectors tasked with making sure they comply with food-safety standards. To help prioritize the facilities targeted for inspection, the City of Chicago used R to create a model that predicts which restaurants are most likely to fail an inspection. Using ... [Read more...]

Intermediate Tree 1

December 29, 2016 | Hasan Imtiaz

If you followed through the Basic Decision Tree exercise, this should be useful for you. This is like a continuation but we add so much more. We are working with a bigger and badder datasets. We will be also using techniques we learned from model evaluation and work with ROC, ... [Read more...]
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