# Noway Clojure Meetup Dec. 2025: Data analysis

Meetup notes

Authors

Affiliations

Teodor Heggelund

Daniel Slutsky

Scicloj

Endor Global

Published

December 3, 2025

Has GDP per capita improved since 1950?
Are trends different per continent?

(def ds
  (-> (rdatasets/gapminder-gapminder)
      (tc/order-by :year)))

(-> ds
    (tc/order-by :year)
    (plotly/layer-line {:=x :year
                        :=y :gdp-percap
                        :=color :country}))

(def kuwait? (comp #{"Kuwait"} :country))

(def ds-kuwait
  (-> ds
      (tc/order-by [:country :year])
      (tc/select-rows kuwait?)))

Why does gdp per capita decrease in Kuwait?

(-> ds-kuwait
    (plotly/layer-line {:=x :year
                        :=y :gdp-percap})
    (plotly/layer-line {:=x :year
                        :=y :pop}))

Population has increased sharply.

What about total gdp?

(-> ds-kuwait
    (tc/* :gdp [:gdp-percap :pop])
    (plotly/layer-line {:=x :year
                        :=y :gdp}))

GDP has been rising, overall, even if GDP per capita has been falling.

(tc/head ds)

https://vincentarelbundock.github.io/Rdatasets/csv/gapminder/gapminder.csv [5 7]:

:rownames	:country	:continent	:year	:life-exp	:pop	:gdp-percap
613	Guinea	Africa	1952	33.609	2664249	510.1964923
289	China	Asia	1952	44.000	556263527	400.4486110
1657	West Bank and Gaza	Asia	1952	43.160	1030585	1515.5923290
769	Italy	Europe	1952	65.940	47666000	4931.4041550
973	Mauritius	Africa	1952	50.986	516556	1967.9557070

(defn select-continent [table continent]
  (-> table
      (tc/select-rows (comp #{continent} :continent))))

(defn view-continent [continent]
  [continent
   (-> ds
       (select-continent continent)
       (plotly/layer-line {:=x :year
                           :=y :gdp-percap
                           :=color :country}))])

(def continents
  (into (sorted-set)
        (tc/column ds :continent)))

continents

#{"Africa" "Americas" "Asia" "Europe" "Oceania"}

(mapv view-continent continents)

[

"Africa"

]

[

"Americas"

]

[

"Asia"

]

[

"Europe"

]

[

"Oceania"

]

source: src/clojure_norway/meetup_2025_12.clj