Exploring 2018 R-bloggers & R Weekly Posts with Feedly & the ‘seymour’ package

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Well, 2018 has flown by and today seems like an appropriate time to take a look at the landscape of R bloggerdom as seen through the eyes of readers of R-bloggers and R Weekly. We’ll do this via a new package designed to make it easier to treat Feedly as a data source: seymour [GL | GH] (which is a pun-ified name based on a well-known phrase from Little Shop of Horrors).

The seymour package builds upon an introductory Feedly API blog post from back in April 2018 and covers most of the “getters” in the API (i.e. you won’t be adding anything to or modifying anything in Feedly through this package unless you PR into it with said functions). An impetus for finally creating the package came about when I realized that you don’t need a Feedly account to use the search or stream endpoints. You do get more data back if you have a developer token and can also access your own custom Feedly components if you have one. If you are a “knowledge worker” and do not have a Feedly account (and, really, a Feedly Pro account) you are missing out. But, this isn’t a rah-rah post about Feedly, it’s a rah-rah post about R! Onwards!

Feeling Out The Feeds

There are a bunch of different ways to get Feedly metadata about an RSS feed. One easy way is to just use the RSS feed URL itself:

library(seymour) # git[la|hu]b/hrbrmstr/seymour
library(hrbrthemes) # git[la|hu]b/hrbrmstr/hrbrthemes
library(lubridate)
library(tidyverse)
r_bloggers <- feedly_feed_meta("http://feeds.feedburner.com/RBloggers")
r_weekly <- feedly_feed_meta("https://rweekly.org/atom.xml")
r_weekly_live <- feedly_feed_meta("https://feeds.feedburner.com/rweeklylive")

glimpse(r_bloggers)
## Observations: 1
## Variables: 14
## $ feedId       "feed/http://feeds.feedburner.com/RBloggers"
## $ id           "feed/http://feeds.feedburner.com/RBloggers"
## $ title        "R-bloggers"
## $ subscribers  24518
## $ updated      1.546227e+12
## $ velocity     44.3
## $ website      "https://www.r-bloggers.com"
## $ topics       data sci....
## $ partial      FALSE
## $ iconUrl      "https://storage.googleapis.com/test-site-assets/X...
## $ visualUrl    "https://storage.googleapis.com/test-site-assets/X...
## $ language     "en"
## $ contentType  "longform"
## $ description  "Daily news and tutorials about R, contributed by ...

glimpse(r_weekly)
## Observations: 1
## Variables: 13
## $ feedId       "feed/https://rweekly.org/atom.xml"
## $ id           "feed/https://rweekly.org/atom.xml"
## $ title        "RWeekly.org - Blogs to Learn R from the Community"
## $ subscribers  876
## $ updated      1.546235e+12
## $ velocity     1.1
## $ website      "https://rweekly.org/"
## $ topics       data sci....
## $ partial      FALSE
## $ iconUrl      "https://storage.googleapis.com/test-site-assets/2...
## $ visualUrl    "https://storage.googleapis.com/test-site-assets/2...
## $ contentType  "longform"
## $ language     "en"

glimpse(r_weekly_live)
## Observations: 1
## Variables: 9
## $ id           "feed/https://feeds.feedburner.com/rweeklylive"
## $ feedId       "feed/https://feeds.feedburner.com/rweeklylive"
## $ title        "R Weekly Live: R Focus"
## $ subscribers  1
## $ updated      1.5461e+12
## $ velocity     14.7
## $ website      "https://rweekly.org/live"
## $ language     "en"
## $ description  "Live Updates from R Weekly"

Feedly uses some special terms, one of which (above) is velocity. “Velocity” is simply the average number of articles published weekly (Feedly’s platform updates that every few weeks for each feed). R-bloggers has over 24,000 Feedly subscribers so any post-rankings we do here should be fairly representative. I included both the “live” and the week-based R Weekly feeds as I wanted to compare post coverage between R-bloggers and R Weekly in terms of raw content.

On the other hand, R Weekly’s “weekly” RSS feed has less than 1,000 subscribers. WAT?! While I have mostly nothing against R-bloggers-proper I heartily encourage ardent readers to also subscribe to R Weekly and perhaps even consider switching to it (or at least adding the individual blog feeds they monitor to your own Feedly). It wasn’t until the Feedly API that I had any idea of how many folks were really viewing my R blog posts since we must provide a full post RSS feed to R-bloggers and get very little in return (at least in terms of data). R Weekly uses a link counter but redirects all clicks to the blog author’s site where we can use logs or analytics platforms to measure engagement. R Weekly is also run by a group of volunteers (more eyes == more posts they catch!) and has a Patreon where the current combined weekly net is likely not enough to buy each volunteer a latte. No ads, a great team and direct engagement stats for the community of R bloggers seems like a great deal for $1.00 USD. If you weren’t persuaded by the above rant, then perhaps at least consider installing this (from source that you control).

Lastly, I believe I’m that “1” subscriber to R Weekly Live O_o. But, I digress.

We’ve got the feedIds (which can be used as “stream” ids) so let’s get cracking!

Binding Up The Posts

We need to use the feedId in calls to feedly_stream() to get the individual posts. The API claims there’s a temporal parameter that allows one to get posts only after a certain date but I couldn’t get it to work (PRs are welcome on any community source code portal you’re most comfortable in if you’re craftier than I am). As a result, we need to make a guess as to how many calls we need to make for two of the three feeds. Basic maths of 44 * 52 / 1000 suggests ~3 should suffice for R Weekly (live) and R-bloggers but let’s do 5 to be safe. We should be able to get R Weekly (weekly) in one go.

r_weekly_wk <- feedly_stream(r_weekly$feedId)

range(r_weekly_wk$items$published) # my preview of this said it got back to 2016!
## [1] "2016-05-20 20:00:00 EDT" "2018-12-30 19:00:00 EST"

# NOTE: If this were more than 3 I'd use a loop/iterator
# In reality, I should make a helper function to do this for you (PRs welcome)

r_blog_1 <- feedly_stream(r_bloggers$feedId)
r_blog_2 <- feedly_stream(r_bloggers$feedId, continuation = r_blog_1$continuation)
r_blog_3 <- feedly_stream(r_bloggers$feedId, continuation = r_blog_2$continuation)

r_weekly_live_1 <- feedly_stream(r_weekly_live$feedId)
r_weekly_live_2 <- feedly_stream(r_weekly_live$feedId, continuation = r_weekly_live_1$continuation)
r_weekly_live_3 <- feedly_stream(r_weekly_live$feedId, continuation = r_weekly_live_2$continuation)

bind_rows(r_blog_1$items, r_blog_2$items, r_blog_3$items) %>% 
  filter(published >= as.Date("2018-01-01")) -> r_blog_stream

bind_rows(r_weekly_live_1$items, r_weekly_live_2$items, r_weekly_live_3$items) %>% 
  filter(published >= as.Date("2018-01-01")) -> r_weekly_live_stream

r_weekly_wk_stream <- filter(r_weekly_wk$items, published >= as.Date("2018-01-01"))

Let’s take a look:

glimpse(r_weekly_wk_stream)
## Observations: 54
## Variables: 27
## $ id                   "2nIALmjjlFcpPJKakm2k8hjka0FzpApixM7HHu8B0...
## $ originid             "https://rweekly.org/2018-53", "https://rw...
## $ fingerprint          "114357f1", "199f78d0", "9adc236e", "63f99...
## $ title                "R Weekly 2018-53 vroom, Classification", ...
## $ updated              2018-12-30 19:00:00, 2018-12-23 19:00:00,...
## $ crawled              2018-12-31 00:51:39, 2018-12-23 23:46:49,...
## $ published            2018-12-30 19:00:00, 2018-12-23 19:00:00,...
## $ alternate            [ "https://rweekly.org/2018-53.html", "https...
## $ unread               TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, F...
## $ categories           [ 1, 5, 5, 3, 2, 3, 1, 2, 3, 2, 4, 3, 2, 2, ...
## $ engagementrate       0.33, NA, NA, NA, NA, NA, NA, NA, NA, NA, ...
## $ recrawled            NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA...
## $ tags                 [NULL, NULL, NULL, NULL, NULL, NULL, NULL...
## $ content_content      "

Hello and welcome to this new issue! "ltr", "ltr", "ltr", "ltr", "ltr", "ltr", ... ## $ origin_streamid "feed/https://rweekly.org/atom.xml", "feed... ## $ origin_title "RWeekly.org - Blogs to Learn R from the C... ## $ origin_htmlurl "https://rweekly.org/", "https://rweekly.o... ## $ visual_processor "feedly-nikon-v3.1", "feedly-nikon-v3.1", ... ## $ visual_url "https://github.com/rweekly/image/raw/mast... ## $ visual_width 372, 672, 1000, 1000, 1000, 1001, 1000, 10... ## $ visual_height 479, 480, 480, 556, 714, 624, 237, 381, 36... ## $ visual_contenttype "image/png", "image/png", "image/gif", "im... ## $ webfeeds_icon "https://storage.googleapis.com/test-site-... ## $ decorations_dropbox NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... glimpse(r_weekly_live_stream) ## Observations: 1,333 ## Variables: 27 ## $ id "rhkRVQ8KjjGRDQxeehIj6RRIBGntdni0ZHwPTR8B3... ## $ originid "https://link.rweekly.org/ckb", "https://l... ## $ fingerprint "c11a0782", "c1897fc3", "c0b36206", "7049e... ## $ title "Top Tweets of 2018", "My #Best9of2018 twe... ## $ crawled 2018-12-29 11:11:52, 2018-12-28 11:24:22,... ## $ published 2018-12-28 19:00:00, 2018-12-27 19:00:00,... ## $ canonical [ [ FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, ... ## $ categories [ [ NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ ampurl NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ cdnampurl NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ engagement NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ summary_content "

maraaverick.rbind.io

"ltr", "ltr", "ltr", "ltr", "ltr", "ltr", ... ## $ origin_streamid "feed/https://feeds.feedburner.com/rweekly... ## $ origin_title "R Weekly Live: R Focus", "R Weekly Live: ... ## $ origin_htmlurl "https://rweekly.org/live", "https://rweek... ## $ visual_url NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ visual_processor NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ visual_width NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ visual_height NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ visual_contenttype NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ decorations_dropbox NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ decorations_pocket NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... glimpse(r_blog_stream) ## Observations: 2,332 ## Variables: 34 ## $ id "XGq6cYRY3hH9/vdZr0WOJiPdAe0u6dQ2ddUFEsTqP... ## $ keywords ["R bloggers", "R bloggers", "R bloggers"... ## $ originid "https://datascienceplus.com/?p=19513", "h... ## $ fingerprint "2f32071a", "332f9548", "2e6f8adb", "3d7ed... ## $ title "Leaf Plant Classification: Statistical Le... ## $ crawled 2018-12-30 22:35:22, 2018-12-30 19:01:25,... ## $ published 2018-12-30 19:26:20, 2018-12-30 13:18:00,... ## $ canonical [ "Giorgio Garziano", "Sascha W.", "Economet... ## $ alternate [ TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, F... ## $ categories [ [ 50, 39, 482, 135, 33, 12, 13, 41, 50, 31, ... ## $ engagementrate 1.43, 0.98, 8.76, 2.45, 0.59, 0.21, 0.22, ... ## $ enclosure [NULL, NULL, NULL, NULL, [NULL, NULL, NULL, NULL, NULL, NULL, NULL... ## $ recrawled NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ updatecount NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ content_content "

"ltr", "ltr", "ltr", "ltr", "ltr", "ltr", ... ## $ summary_content "CategoriesAdvanced Modeling\nTags\nLinear... ## $ summary_direction "ltr", "ltr", "ltr", "ltr", "ltr", "ltr", ... ## $ origin_streamid "feed/http://feeds.feedburner.com/RBlogger... ## $ origin_title "R-bloggers", "R-bloggers", "R-bloggers", ... ## $ origin_htmlurl "https://www.r-bloggers.com", "https://www... ## $ visual_processor "feedly-nikon-v3.1", "feedly-nikon-v3.1", ... ## $ visual_url "https://i0.wp.com/datascienceplus.com/wp-... ## $ visual_width 383, 400, NA, 286, 456, 250, 450, 456, 397... ## $ visual_height 309, 300, NA, 490, 253, 247, 450, 253, 333... ## $ visual_contenttype "image/png", "image/png", NA, "image/png",... ## $ webfeeds_icon "https://storage.googleapis.com/test-site-... ## $ decorations_dropbox NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA... ## $ decorations_pocket NA, NA, NA, NA, NA, NA, NA, NA, NA, NA, NA...

And also check how far into December for each did I get as of this post? (I’ll check again after the 31 and update if needed).

range(r_weekly_wk_stream$published)
## [1] "2018-01-07 19:00:00 EST" "2018-12-30 19:00:00 EST"

range(r_blog_stream$published)
## [1] "2018-01-01 11:00:27 EST" "2018-12-30 19:26:20 EST"

range(r_weekly_live_stream$published)
## [1] "2018-01-01 19:00:00 EST" "2018-12-28 19:00:00 EST"

Digging Into The Weeds Feeds

In the above glimpses there’s another special term, engagement. Feedly defines this as an “indicator of how popular this entry is. The higher the number, the more readers have read, saved or shared this particular entry”. We’ll use this to look at the most “engaged” content in a bit. What’s noticeable from the start is that R Weekly Live has 1,333 entries and R-bloggers has 2,330 entries (so, nearly double the number of entries). Those counts are a bit of “fake news” when it comes to overall unique posts as can be seen by:

bind_rows(
  mutate(r_weekly_live_stream, src = "R Weekly (Live)"),
  mutate(r_blog_stream, src = "R-bloggers")
) %>% 
  mutate(wk = lubridate::week(published)) -> y2018

filter(y2018, title == "RcppArmadillo 0.9.100.5.0") %>% 
  select(src, title, originid, published) %>% 
  gt::gt()

srctitleoriginidpublished
R Weekly (Live)RcppArmadillo 0.9.100.5.0https://link.rweekly.org/bg62018-08-17 07:55:00
R Weekly (Live)RcppArmadillo 0.9.100.5.0https://link.rweekly.org/bfr2018-08-16 21:20:00
R-bloggersRcppArmadillo 0.9.100.5.0https://www.r-bloggers.com/?guid=f8865e8a004f772bdb64e3c4763a0fe52018-08-17 08:00:00
R-bloggersRcppArmadillo 0.9.100.5.0https://www.r-bloggers.com/?guid=3046299f73344a927f787322c867233b2018-08-16 21:20:00

Feedly has many processes going on behind the scenes to identify new entries and update entries as original sources are modified. This “duplication” (thankfully) doesn’t happen alot:

count(y2018, src, wk, title, sort=TRUE) %>% 
  filter(n > 1) %>% 
  arrange(wk) %>% 
  gt::gt() %>% 
  gt::fmt_number(c("wk", "n"), decimals = 0)

srcwktitlen
R-bloggers3conapomx data package2
R Weekly (Live)5R in Latin America2
R Weekly (Live)12Truncated Poisson distributions in R and Stan by @ellis2013nz2
R Weekly (Live)17Regression Modeling Strategies2
R Weekly (Live)18How much work is onboarding?2
R Weekly (Live)18Survey books, courses and tools by @ellis2013nz2
R-bloggers20Beautiful and Powerful Correlation Tables in R2
R Weekly (Live)24R Consortium is soliciting your feedback on R package best practices2
R Weekly (Live)33RcppArmadillo 0.9.100.5.02
R-bloggers33RcppArmadillo 0.9.100.5.02
R-bloggers39Individual level data2
R Weekly (Live)41How R gets built on Windows2
R Weekly (Live)41R Consortium grant applications due October 312
R Weekly (Live)41The Economist’s Big Mac Index is calculated with R2
R Weekly (Live)42A small logical change with big impact2
R Weekly (Live)42Maryland’s Bridge Safety, reported using R2
R-bloggers47OneR – fascinating insights through simple rules2

In fact, it happens infrequently enough that I’m going to let the “noise” stay in the data since Feedly technically is tracking some content change.

Let’s look at the week-over-week curation counts (neither source publishes original content, so using the term “published” seems ill fitting) for each:

count(y2018, src, wk) %>% 
  ggplot(aes(wk, n)) +
  geom_segment(aes(xend=wk, yend=0, color = src), show.legend = FALSE) +
  facet_wrap(~src, ncol=1, scales="free_x") + 
  labs(
    x = "Week #", y = "# Posts", 
    title = "Weekly Post Curation Stats for R-bloggers & R Weekly (Live)"
  ) +
  theme_ft_rc(grid="Y")

week over week

Despite R-bloggers having curated more overall content, there’s plenty to read each week for consumers of either/both aggregators.

Speaking of consuming, let’s look at the distribution of engagement scores for both aggregators:

group_by(y2018, src) %>% 
  summarise(v = list(broom::tidy(summary(engagement)))) %>% 
  unnest()
## # A tibble: 2 x 8
##   src             minimum    q1 median  mean    q3 maximum    na
##                         
## 1 R Weekly (Live)       0     0    0     0       0       0  1060
## 2 R-bloggers            1    16   32.5  58.7    70    2023    NA

Well, it seems that it’s more difficult for Feedly to track engagement for the link-only R Weekly (Live) feed, so we’ll have to focus on R-bloggers for engagement views. Summary values are fine, but we can get a picture of the engagement distribution (we’ll do it monthly to get a bit more granularity, too):

filter(y2018, src == "R-bloggers") %>% 
  mutate(month = lubridate::month(published, label = TRUE, abbr = TRUE)) %>% 
  ggplot(aes(month, engagement)) +
  geom_violin() +
  ggbeeswarm::geom_quasirandom(
    groupOnX = TRUE, size = 2, color = "#2b2b2b", fill = ft_cols$green,
    shape = 21, stroke = 0.25
  ) +
  scale_y_comma(trans = "log10") +
  labs(
    x = NULL, y = "Engagement Score",
    title = "Monthly Post Engagement Distributions for R-bloggers Curated Posts",
    caption = "NOTE: Y-axis log10 Scale"
  ) +
  theme_ft_rc(grid="Y")

post engagement distribution

I wasn’t expecting each month’s distribution to be so similar. There are definitely outliers in terms of positive engagement so we should be able see what types of R-focused content piques the interest of the ~25,000 Feedly subscribers of R-bloggers.

filter(y2018, src == "R-bloggers") %>% 
  group_by(author) %>% 
  summarise(n_posts = n(), total_eng = sum(engagement), avg_eng = mean(engagement), med_eng = median(engagement)) %>% 
  arrange(desc(n_posts)) %>% 
  slice(1:20) %>% 
  gt::gt() %>% 
  gt::fmt_number(c("n_posts", "total_eng", "avg_eng", "med_eng"), decimals = 0)

authorn_poststotal_engavg_engmed_eng
David Smith1169,7918447
John Mount944,6144933
rOpenSci – open tools for open science892,9673319
Thinking inside the box851,5101814
R Views604,1426947
hrbrmstr551,1792116
Dr. Shirin Glander542,7475125
xi’an499902012
Mango Solutions421,2212917
Econometrics and Free Software332,8588760
business-science.io – Articles314,48414570
NA311,7245640
statcompute291,3294633
Ryan Sheehy251,2715145
Keith Goldfeld241,3055443
free range statistics – R234401912
Jakob Gepp213481713
Tal Galili211,5877622
Jozef’s Rblog181,6179065
arthur charpentier161,3208268

It is absolutely no surprise David comes in at number one in both post count and almost every engagement summary statistic since he’s a veritable blogging machine and creates + curates some super interesting content (whereas your’s truly doesn’t even make the median engagement cut 🤔).

What were the most engaging posts?

filter(y2018, src == "R-bloggers") %>% 
  arrange(desc(engagement)) %>% 
  mutate(published = as.Date(published)) %>% 
  select(engagement, title, published, author) %>% 
  slice(1:50) %>% 
  gt::gt() %>% 
  gt::fmt_number(c("engagement"), decimals = 0)

engagementtitlepublishedauthor
2,023Happy Birthday R2018-08-27eoda GmbH
1,13215 Types of Regression you should know2018-03-25ListenData
697R and Python: How to Integrate the Best of Both into Your Data Science Workflow2018-10-08business-science.io – Articles
690Ultimate Python Cheatsheet: Data Science Workflow with Python2018-11-18business-science.io – Articles
639Data Analysis with Python Course: How to read, wrangle, and analyze data2018-10-31Andrew Treadway
617Machine Learning Results in R: one plot to rule them all!2018-07-18Bernardo Lares
614R tip: Use Radix Sort2018-08-21John Mount
610Data science courses in R (/python/etc.) for $10 at Udemy (Sitewide Sale until Aug 26th)2018-08-24Tal Galili
575Why R for data science – and not Python?2018-12-02Learning Machines
560Case Study: How To Build A High Performance Data Science Team2018-09-18business-science.io – Articles
516R 3.5.0 is released! (major release with many new features)2018-04-24Tal Galili
482R or Python? Why not both? Using Anaconda Python within R with {reticulate}2018-12-30Econometrics and Free Software
479Sankey Diagram for the 2018 FIFA World Cup Forecast2018-06-10Achim Zeileis
4775 amazing free tools that can help with publishing R results and blogging2018-12-22Jozef’s Rblog
462What’s the difference between data science, machine learning, and artificial intelligence?2018-01-09David Robinson
456XKCD “Curve Fitting”, in R2018-09-28David Smith
450The prequel to the drake R package2018-02-06rOpenSci – open tools for open science
449Who wrote that anonymous NYT op-ed? Text similarity analyses with R2018-09-07David Smith
437Elegant regression results tables and plots in R: the finalfit package2018-05-16Ewen Harrison
428How to implement neural networks in R2018-01-12David Smith
426Data transformation in #tidyverse style: package sjmisc updated #rstats2018-02-06Daniel
413Neural Networks Are Essentially Polynomial Regression2018-06-20matloff
403Custom R charts coming to Excel2018-05-11David Smith
379A perfect RStudio layout2018-05-22Ilya Kashnitsky
370Drawing beautiful maps programmatically with R, sf and ggplot2 — Part 1: Basics2018-10-25Mel Moreno and Mathieu Basille
368The Financial Times and BBC use R for publication graphics2018-06-27David Smith
367Dealing with The Problem of Multicollinearity in R2018-08-16Perceptive Analytics
367Excel is obsolete. Here are the Top 2 alternatives from R and Python.2018-03-13Appsilon Data Science Blog
365New R Cheatsheet: Data Science Workflow with R2018-11-04business-science.io – Articles
361Tips for analyzing Excel data in R2018-08-30David Smith
360Importing 30GB of data in R with sparklyr2018-02-16Econometrics and Free Software
358Scraping a website with 5 lines of R code2018-01-24David Smith
356Clustering the Bible2018-12-27Learning Machines
356Finally, You Can Plot H2O Decision Trees in R2018-12-26Gregory Kanevsky
356Geocomputation with R – the afterword2018-12-12Rstats on Jakub Nowosad’s website
347Time Series Deep Learning: Forecasting Sunspots With Keras Stateful LSTM In R2018-04-18business-science.io – Articles
343Run Python from R2018-03-27Deepanshu Bhalla
336Machine Learning Results in R: one plot to rule them all! (Part 2 – Regression Models)2018-07-24Bernardo Lares
332R Generation: 25 Years of R2018-08-01David Smith
329How to extract data from a PDF file with R2018-01-05Packt Publishing
325R or Python? Python or R? The ongoing debate.2018-01-28tomaztsql
322How to perform Logistic Regression, LDA, & QDA in R2018-01-05Prashant Shekhar
321Who wrote the anti-Trump New York Times op-ed? Using tidytext to find document similarity2018-09-06David Robinson
311Intuition for principal component analysis (PCA)2018-12-06Learning Machines
310Packages for Getting Started with Time Series Analysis in R2018-02-18atmathew
309Announcing the R Markdown Book2018-07-13Yihui Xie
307Automated Email Reports with R2018-11-01JOURNEYOFANALYTICS
304future.apply – Parallelize Any Base R Apply Function2018-06-23JottR on R
298How to build your own Neural Network from scratch in R2018-10-09Posts on Tychobra
293RStudio 1.2 Preview: SQL Integration2018-10-02Jonathan McPherson

Weekly & monthly curated post descriptive statstic patterns haven’t changed much since the April post:

filter(y2018, src == "R-bloggers") %>% 
  mutate(wkday = lubridate::wday(published, label = TRUE, abbr = TRUE)) %>%
  count(wkday) %>% 
  ggplot(aes(wkday, n)) +
  geom_col(width = 0.5, fill = ft_cols$slate, color = NA) +
  scale_y_comma() +
  labs(
    x = NULL, y = "# Curated Posts",
    title = "Day-of-week Curated Post Count for the R-bloggers Feed"
  ) +
  theme_ft_rc(grid="Y")

day of week view

filter(y2018, src == "R-bloggers") %>% 
  mutate(month = lubridate::month(published, label = TRUE, abbr = TRUE)) %>%
  count(month) %>% 
  ggplot(aes(month, n)) +
  geom_col(width = 0.5, fill = ft_cols$slate, color = NA) +
  scale_y_comma() +
  labs(
    x = NULL, y = "# Curated Posts",
    title = "Monthly Curated Post Count for the R-bloggers Feed"
  ) +
  theme_ft_rc(grid="Y")

month view

Surprisingly, monthly post count consistency (or even posting something each month) is not a common trait amongst the top 20 (by total engagement) authors:

w20 <- scales::wrap_format(20)

filter(y2018, src == "R-bloggers") %>% 
  filter(!is.na(author)) %>% # some posts don't have author attribution
  mutate(author_t = map_chr(w20(author), paste0, collapse="\n")) %>% # we need to wrap for facet titles (below)
  count(author, author_t, wt=engagement, sort=TRUE) %>% # get total author engagement
  slice(1:20) %>% # top 20
  { .auth_ordr <<- . ; . } %>% # we use the order later
  left_join(filter(y2018, src == "R-bloggers"), "author") %>% 
  mutate(month = lubridate::month(published, label = TRUE, abbr = TRUE)) %>%
  count(month, author_t, sort = TRUE) %>% 
  mutate(author_t = factor(author_t, levels = .auth_ordr$author_t)) %>% 
  ggplot(aes(month, nn, author_t)) +
  geom_col(width = 0.5) +
  scale_x_discrete(labels=substring(month.abb, 1, 1)) +
  scale_y_comma() +
  facet_wrap(~author_t) +
  labs(
    x = NULL, y = "Curated Post Count",
    title = "Monthly Curated Post Counts-per-Author (Top 20 by Engagement)",
    subtitle = "Arranged by Total Author Engagement"
  ) +
  theme_ft_rc(grid="yY")

Overall, most authors favor shorter titles for their posts:

filter(y2018, src == "R-bloggers") %>% 
  mutate(
    `Character Count Distribution` = nchar(title), 
    `Word Count Distribution` = stringi::stri_count_boundaries(title, type = "word")
  ) %>% 
  select(id, `Character Count Distribution`, `Word Count Distribution`) %>% 
  gather(measure, value, -id) %>% 
  ggplot(aes(value)) +
  ggalt::geom_bkde(alpha=1/3, color = ft_cols$slate, fill = ft_cols$slate) +
  scale_y_continuous(expand=c(0,0)) +
  facet_wrap(~measure, scales = "free") +
  labs(
    x = NULL, y = "Density",
    title = "Title Character/Word Count Distributions",
    subtitle = "~38 characters/11 words seems to be the sweet spot for most authors",
    caption = "Note Free X/Y Scales"
  ) +
  theme_ft_rc(grid="XY")

This post is already kinda tome-length so I’ll leave it to y’all to grab the data and dig in a bit more.

A Word About Using The content_content Field For R-bloggers Posts

Since R-bloggers requires a full feed from contributors, they, in-turn, post a “kinda” full-feed back out. I say “kinda” as they still haven’t fixed a reported bug in their processing engine which causes issues in (at least) Feedly’s RSS processing engine. If you use Feedly, take a look at the R-bloggers RSS feed entry for the recent “R or Python? Why not both? Using Anaconda Python within R with {reticulate}” post. It cuts off near “Let’s check its type:”. This is due to the way the < character is processed by the R-bloggers ingestion engine which turns the ## in the original post and doesn’t even display right on the R-bloggers page as it mangles the input and turns the descriptive output into an actuall tag: . It’s really an issue on both sides, but R-bloggers is doing the mangling and should seriously consider addressing it in 2019.

Since it is still not fixed, it forces you to go to R-bloggers (clicks FTW? and may partly explain why that example post has a 400+ engagement score) unless you scroll back up to the top of the Feedly view and go to the author’s blog page. Given that tibble output invariably has a < right up top, your best bet for getting more direct views of your own content is to get a code-block with printed ## < output in it as close to the beginning as possible (perhaps start each post with a print(tbl_df(mtcars)))? 🤓).

Putting post-view-hacking levity aside, this content mangling means you can’t trust the content_content column in the stream data frame to have all the content; that is, if you were planning on taking the provided data and doing some topic clustering or content-based feature extraction for other stats/ML ops you’re out of luck and need to crawl the original site URLs on your own to get the main content for such analyses.

A Bit More About seymour

The seymour package has the following API functions:

  • feedly_access_token: Retrieve the Feedly Developer Token
  • feedly_collections: Retrieve Feedly Connections
  • feedly_feed_meta: Retrieve Metadata for a Feed
  • feedly_opml: Retrieve Your Feedly OPML File
  • feedly_profile: Retrieve Your Feedly Profile
  • feedly_search_contents: Search content of a stream
  • feedly_search_title: Find feeds based on title, url or ‘#topic’
  • feedly_stream: Retrieve contents of a Feedly “stream”
  • feedly_tags: Retrieve List of Tags

along with following helper function (which we’ll introduce in a minute):

  • render_stream: Render a Feedly Stream Data Frame to RMarkdown

and, the following helper reference (as Feedly has some “universal” streams):

  • global_resource_ids: Global Resource Ids Helper Reference

The render_stream() function is semi-useful on its own but was designed as more of a “you may want to replicate this on your own” (i.e. have a look at the source code and riff off of it). “Streams” are individual feeds, collections or even “boards” you make and with this new API package and the power of R Markdown, you can make your own “newsletter” like this:

fp <- feedly_profile() # get profile to get my id

# use the id to get my "security" category feed in my feedly
fs <- feedly_stream(sprintf("user/%s/category/security", fp$id))

# get the top 10 items with engagement >= third quartile of all posts
# and don't include duplicates in the report
mutate(fs$items, published = as.Date(published)) %>% 
  filter(published >= as.Date("2018-12-01")) %>%
  filter(engagement > fivenum(engagement)[4]) %>% 
  filter(!is.na(summary_content)) %>% 
  mutate(alt_url = map_chr(alternate, ~.x[[1]])) %>% 
  distinct(alt_url, .keep_all = TRUE) %>% 
  slice(1:10) -> for_report

# render the report
render_stream(
  feedly_stream = for_report, 
  title = "Cybersecurity News", 
  include_visual = TRUE,
  browse = TRUE
)

Which makes the following Rmd and HTML. (So, no need to “upgrade” to “Teams” to make newsletters!).

FIN

As noted, the 2018 data for R Weekly (Live) & R-bloggers is available and you can find the seymour package on [GL | GH].

If you’re not a Feedly user I strongly encourage you to give it a go! And, if you don’t subscribe to R Weekly, you should make that your first New Year’s Resolution.

Here’s looking to another year of great R content across the R blogosphere!

To leave a comment for the author, please follow the link and comment on their blog: R – rud.is.

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