cd playground
ls -alt

head -5  iris.csv

cat iris.csv | head | csvlook

cat iris.csv | datamash -t "," -H -s -g 5 mean 1

cat iris.csv | q -H -d "," "SELECT AVG(sepal_length), species from - Group BY species"

cat iris.csv | Rio -ge "g+geom_point(aes(x=sepal_length,y=sepal_width,colour=species))"| display