Mitsuo Shiota

Histograms of lead concentration samples faceted by collector (MDEQ or Virgina Tech); x-axis is lead levels in ppb (log-scale), and y-axis is counts. Two removed samples in MDEQ are colored in red. Dashed and dotted lines show mean excluding and including those removed two.

My submission for #TidyTuesday, Week 44 on lead concentration in Flint water samples in 2015. I compare sample distributions by MDEQ and Virginia Tech.

Code: github.com/mitsuoxv/tid...

Line chart of 12 prizes; x-axis is decade, and y-axis is man ration in winners.

My submission for #TidyTuesday, Week 43 on Selected British Literary Prizes (1990-2020). I explore man ratio in winners by prize and decade.

Code: github.com/mitsuoxv/tid...

UK map with 27 points, of which color represents August maximum temperature rise from 1960s to 2020s.

My submission for #TidyTuesday, Week 42 on Historic UK Meteorological & Climate Data. I explore August maximum temperature rise from 1960s to 2020s by station.

Code: github.com/mitsuoxv/tid...

I have updated my Shiny app to show IMF World Economic Outlook database, October 2025.

mitsuoxv.shinyapps.io/imf-weo/

Line chart; x-axis is years from 2005 to 2024, and y-axis is prevalence of undernourishment. 4 lines are low, lower-middle, upper-middle and high income economies.

My submission for #TidyTuesday, Week 41 on World Food Day. I explore undernourishment changes by income-level.

Code: github.com/mitsuoxv/tid...

Scatterplot; x-axis is basketball seasons from 1958 to 2024-25, and y-axis is the championship club.

Correction: I redraw the chart based on the data from Wikipedia.

Scatterplot; x-axis is non-continuous years from 1992 to 2025, and y-axis is the team-city-country which won the title.

My submission for #TidyTuesday, Week 40 on EuroLeague Basketball. I explore which team won the title each year.

Code: github.com/mitsuoxv/tid...

Line chart of 2 lines (one for spring, and the other for fall); x-axis is year (1994-2024), and y-axis is max crane observation in each year-season at Lake Hornbogasjon, Sweden.

My submission for #TidyTuesday, Week 39 on Crane Observations at Lake Hornborgasjon, Sweden (1994-2024). I explore max observation in each season (spring and fall).

Code: github.com/mitsuoxv/tid...

Scatterplots by sex and k factor; x-axis is ratings in August, and y-axis is ratings in September 2025. Each point is colored with year of birth of a player.

My submission for #TidyTuesday, Week 38 on FIDE Chess Player Ratings. I explore rating change from August to September 2025 by sex and k factor.

Code: github.com/mitsuoxv/tid...

Box plots of calories per serving; x-axis is country, and y-axis is calories per serving.

My submission for #TidyTuesday, Week 37 on Allrecipes. I explore calories per serving by country.

Code: github.com/mitsuoxv/tid...

Black Screen or Login Issues (Pop!_OS 22.04 LTS) Are you getting stuck in a login loop, even though your password is correct? Do you see a black screen after you log in?

Ctl+Alt+F5 saved me yesterday, when login screen failed to appear in Pop! OS 22.04. Once in TTY mode, sudo apt update, sudo apt dist-upgrade and sudo reboot. Then login screen appeared as usual.
support.system76.com/articles/log...

Line chart of 3 countries (Singapore, Japan and the US); x-axis is years from 2006 to 2025, and y-axis is ranking of visa free count.

My submission for #TidyTuesday, Week 36 on Henley Passport Index Data. I explore rank changes among top rank countries.

Code: github.com/mitsuoxv/tid...

Bar chart filled with frog tribes; x-axis is # of events, and y-axis is four seasons from spring to winter.

My submission for #TidyTuesday, Week 35 on Australian Frogs. I explore frog tribes by season.

Code: github.com/mitsuoxv/tid...

Bar chart filled with decades to hit Number One; x-axis is # of Number One Songs, and y-axis is top 8 artists.

My submission for #TidyTuesday, Week 34 on Billboard Hot 100 Number Ones. I explore # of Number One Songs by artist.

Code: github.com/mitsuoxv/tid...

A map of Munros in Scotland, 2021.

My submission for #TidyTuesday, Week 33 on Scottish Munros. I try a map of Munros in 2021.

Code: github.com/mitsuoxv/tid...

Bar charts faceted by event type like heat or snow; x-axis is years when studies were published, y-axis is number of studies, and bar is filled with climate change impact classification like more severe or less severe.

My submission for #TidyTuesday, Week 32 on Extreme Weather Attribution Studies. I explore climate change impact by event type according to studies.

Code: github.com/mitsuoxv/tid...

Line charts of 28 European countries faceted by before or after tax; x-axis is years from 1968 to 2023, and y-axis is Gini coefficient.

My submission for #TidyTuesday, Week 31 on Income Inequality Before and After Taxes. I explore before and after tax Gini coefficient movement in European countries.

Code: github.com/mitsuoxv/tid...

Line chart faceted by top 4 viewed series; x-axis is report period from 2023Jul-Dec to 2025Jan-Jun, and y-axis is hours viewed in millions.

My submission for Week 30 on What have we been watching on Netflix? I explore hours viewed by season in top 4 viewed series.

Code: github.com/mitsuoxv/tid...

Histogram faced by whether the art is displayed after 2009 global financial crisis or not; x-axis is # of lines going through the station where the art is displayed, and y-axis is # of displayed arts in NYC transit.

My submission for #TidyTuesday, Week 29 on MTA Permanent Art Catalog. I explore distribution of arts by the number of lines of the station.

Code: github.com/mitsuoxv/tid...

Bar chart; x-axis is years from 1998 to 2023, y-axis is funding in real terms (year 2000 GBP in millions), and each bar is filled with funding sources like grant-in-aid and donation.

My submission for #TidyTuesday, Week 28 on British Library Funding. I explore funding changes from Labour to Conservative administration.

Code: github.com/mitsuoxv/tid...

2 scatterplots; common y-axis is spam user probability, x-axis in left is # of answers per user, and x-axis in right is max value of RGB difference square sum in case of less than 50 answers.

My submission for #TidyTuesday, Week 27 on The xkcd Color Survey Results. I explore which types of users are most likely to be spam users.

Code: github.com/mitsuoxv/tid...

2 line charts; common x-axis is date (weekly) from 1994 to 2025, and y-axis is either premium price or rate over regular gasoline. Red line is premium, and blue line is midgrade. Formulation is conventional.

My submission for #TidyTuesday, Week 26 on Weekly US Gas Prices. I explore premium price and rate over regular gasoline (conventional formulation).

Code: github.com/mitsuoxv/tid...

Bar charts faceted by region (basically continent); x-axis is year from 2014 to 2024, and y-axis is measles cases per 1 million population.

My submission for #TidyTuesday, Week 25 on Measles cases across the world. I explore measles incidence rates by region and year.

Code: github.com/mitsuoxv/tid...

Bar chart; x-axis is # of APIs, and y-axis is top 7 providers in open data category.

My submission for #TidyTuesday, Week 24 on API Specs. I explore who provides largest number of APIs in open data category.

Code: github.com/mitsuoxv/tid...

Bar charts of counting male or female appointments faceted by president party (Democratic or Republican), and year range (Lincoln to L. B. Johnson, or Nixon to Obama).

My submission for #TidyTuesday, Week 23 on U.S. Judges and historydata R Package. I explore gender appointment tendency by president party, and year range (Lincoln to L. B. Johnson, or Nixon to Obama).

Code: github.com/mitsuoxv/tid...

Bar chart; x-axis is number of available languages, and y-axis is authors.

My submission for #TidyTuesday, Week 22 on Project Gutenberg. I explore whose work is most widely translated.

Code: github.com/mitsuoxv/tid...

Boxplot; x-axis is challenge ratings of monsters, and y-axis is monster type.

My submission for Week 21 on Dungeons and Dragons Monsters (2024). I explore which monster type has the broadest range of challenger ratings.

Code: github.com/mitsuoxv/tid...

Scatterplots faceted by region and decade; x-axis is cumulative rainfall from yesterday (mm, log scale), and y-axis is water quality in CFU per 100 ml (log scale). Points are colored red if y > 200 (unsafe), green if y < 40 (safe), and gray inbetween.

My submission for #TidyTuesday, Week 20 on Water Quality at Sydney Beaches. I explore relationship between rainfall and water quality, by region and decade.

Code: github.com/mitsuoxv/tid...

Scatterplot; x-axis is depth in km (log scale), and y-axis is Md (long scale), excluding negative value events (microearthquakes).

My submission for Week 19 on Seismic Events at Mount Vesuvius. I explore correlation between depth and Md.

Code: github.com/mitsuoxv/tid...

Bar charts faceted by in Cruz list or not; x-axis is number of grants terminated, and y-axis is 9 directorates.

My submission for Week 18 on NSF Grant Terminations under the Trump Administration. I explore terminated grants by directorate, expected end year, and in Cruz list or not.

Code: github.com/mitsuoxv/tid...