May, 2020 | R-bloggers

Test positivity rates and actual incidence and growth of diseases by @ellis2013nz

May 8, 2020 | free range statistics - R

Test positivity rates and disease incidence OK, lets talk about test positivity rates ie the proportion of administered tests that conclude the subject has the disease being tested for. These are in the news, with COVID-19 test positivity being used as an informal indicator of COVID-19 incidence and the quality ... [Read more...]

Use basic operators

May 8, 2020 | Quantargo Blog

R is not only good for analysing and visualizing data, but also for solving maths problems or comparing data with each other. Plus you can use it just like a pocket calculator. Use R as a pocket calculator Use arithmetic operators on vectors Use relational operators on vectors Use logical ...

[Read more...]

Same Time Next Year: crunching PubMed data

May 8, 2020 | quantixed

I am giving a talk next week and wanted to update some plots from an old analysis that previously featured on quantixed. The question is: how long does it take for a paper get published? The answer is complex (as previously discussed on quantixed), but we can at least find ...

[Read more...]

Machined risk premia

May 7, 2020 | R on OSM

Over the last few posts, we’ve discussed methods to set return expectations to construct a satisfactory portfolio. These methods are historical averages, discounted cash flow models, and risk premia. our last post, focused on the third method: risk ...

[Read more...]

Child tables with DT, editing, exporting

May 7, 2020 | Stéphane Laurent

I’m going to show how to use the DT package to do a table with child tables, and how to edit and export such a table. In order to do a table with child tables, one adds a list column to the ... [Read more...]

Machined risk premia

May 7, 2020 | R on OSM

Over the last few posts, we’ve discussed methods to set return expectations to construct a satisfactory portfolio. These methods are historical averages, discounted cash flow models, and risk premia. our last post, focused on the third method: risk premia. Using the Capital Asset Pricing Model (CAPM) one can derive ...

[Read more...]

Custom errors for cross-validation using crossval::crossval_ml

May 7, 2020 | T. Moudiki

Custom errors for cross-validation using crossval::crossval_ml [Read more...]

Some Upcoming R Related, Virtual Events

May 7, 2020 | R Views

COVID-19 Data Forum Webinar - Next Thursday (5/14/20) at Noon Pacific time, the COVID-19 Data Forum, sponsored by R Consortium and the Stanford Data Science Institute will open with a public webinar. The purpose of the Forum is to provide a way for experts to focus on data-related aspects of the ...

[Read more...]

Vignette: Generate your own ggplot theme gallery

May 7, 2020 | Martin Chan

Background I’ve always found it a bit of a pain to explore and choose from all the different themes available out there for {ggplot2}. Yes I know, I know - there are probably tons of websites out there with a ggplot theme gallery which I can Google,1 but it’...

[Read more...]

Why and how maintain a NEWS file for your R package?

May 7, 2020 | Posts on R-hub blog

Your R package is doomed to evolve as you add new features and bug fixes. There is some value in cultivating a NEWS file as a response to package transformation. In this post, we shall go through why keeping track of changes, how to create and maintain a changelog, advocating ... [Read more...]

Thank you “Why R?” for Being Awesome Hosts

May 7, 2020 | John Mount

Thank you very much Why R? for being awesome hosts. We are really pleased with how your virtual MeetUp went. For those who missed it here is a link. [Read more...]

Thank you “Why R?” for Being Awesome Hosts

May 7, 2020 | John Mount

Thank you very much Why R? for being awesome hosts. We are really pleased with how your virtual MeetUp went. For those who missed it here is a link. [Read more...]

Make Andrew happy with one simple ggplot trick

May 7, 2020 | Bob Carpenter

By default, ggplot expands the space above and below the x-axis (and to the left and right of the y-axis). Andrew has made it pretty clear that he thinks the x axis should be drawn at y = 0. To remove the extra space around the axes when you have continuous (not ... [Read more...]

Stanford Data Science Institute Joins R Consortium in Sponsoring COVID-19 Data Forum – Join Us!

May 7, 2020 | R Consortium

The Stanford Data Science Institute, which aims to give Stanford faculty and students the tools, skills and understanding they need to do cutting-edge research, is joining with the R Consortium... The post Stanford Data Science Institute Joins R Consortium in Sponsoring COVID-19 Data Forum – Join Us! appeared first on R ...

[Read more...]

Forecasting the next decade in the stock market using time series models

May 7, 2020 | Data-based investor

This post will introduce one way of forecasting the stock index returns on the US market. Typically, single measures such as CAPE have been used to do this, but they lack accuracy compared to using many variables and can also have different relationshi...

[Read more...]

Forecasting the next decade in the stock market using time series models

May 7, 2020 | Data-based investor

This post will introduce one way of forecasting the stock index returns on the US market. Typically, single measures such as CAPE have been used to do this, but they lack accuracy compared to using many variables and can also have different relationships with returns on different markets. Furthermore, it ...

[Read more...]

Exploring Big MT Cars with Python datatable-Part 1

May 6, 2020 | R on Redwall Analytics

# R Libraries
library("reticulate")
library("skimr")

knitr::opts_chunk$set(
  fig.width = 15,
  fig.height = 8,
  out.width = '100%')

# Install Python packages
lapply(c("datatable", "pandas"), function(package) {
       conda_install("r-reticulate", package, pip = TRUE)
})

# Python libraries
from datatable import *
import numpy as np
import re
import pprint

Introduction As mentioned in our last series Parsing Mass Municipal PDF CAFRs with Tabulizer, pdftools and AWS Textract - Part 1 and A Walk Though of Accessing Financial Statements with XBRL in R - Part 1, this is a year of clean-up. Redwall Analytics is going through this year, ... [Read more...]

How to Write an R Package Wrapping a NodeJS Module

May 6, 2020 | Colin Fay

Mr A Bichat was looking for a way to bundle a NodeJS module inside an R package. Here is an attempt at a reproducible example, that might also help others! About NodeJS Packages There are two ways to install NodeJS packages: globally and locally. Th... [Read more...]

Fortifying hyperSpec: Getting Ready for GSOC

May 6, 2020 | R on Chemometrics & Spectroscopy using R

hyperSpec is an R package for working with hyperspectral data sets. Hyperspectral data can take many forms, but a common application is a series of spectra collected over an x, y grid, for instance Raman imaging of medical specimens. hyperSpec was ... [Read more...]

A Roundup of R Tools for Handling BibTeX

May 6, 2020 | rOpenSci - open tools for open science

Our website is based on Markdown content rendered with Hugo. Markdown content is in some cases knit from R Markdown, but with less functionality than if one rendered R Markdown to html as in the blogdown default. In particular, we cannot use the usual BibTex + CSL + Pandoc-citeproc dance to handle ... [Read more...]

R-bloggers

R news and tutorials contributed by hundreds of R bloggers

May 2020

Test positivity rates and actual incidence and growth of diseases by @ellis2013nz

Use basic operators

Same Time Next Year: crunching PubMed data

Machined risk premia

Child tables with DT, editing, exporting

Machined risk premia

Custom errors for cross-validation using crossval::crossval_ml

Some Upcoming R Related, Virtual Events

Vignette: Generate your own ggplot theme gallery

Why and how maintain a NEWS file for your R package?

Thank you “Why R?” for Being Awesome Hosts

Thank you “Why R?” for Being Awesome Hosts

Make Andrew happy with one simple ggplot trick

Stanford Data Science Institute Joins R Consortium in Sponsoring COVID-19 Data Forum – Join Us!

Forecasting the next decade in the stock market using time series models

Forecasting the next decade in the stock market using time series models

Exploring Big MT Cars with Python datatable-Part 1

How to Write an R Package Wrapping a NodeJS Module

Fortifying hyperSpec: Getting Ready for GSOC

A Roundup of R Tools for Handling BibTeX

May 2020

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