sizing of sparklines to maximize their readability. See also Kagi chart References Further reading "History of Sparklines", essay by Edward Tufte, edwardtufte.com "Sparkline in Google Sheets", blog.tryamigo.com "Micro Visualisations", thesis by Jonas Parnow, microvis.info "Everything you ever wanted to know about Sparklines in Google Sheets", benlcollins.com Infographics