Is it possible to thicken the line graph shown when using the formula =SPARKLINE(L4:L)?

  • Please add a brief description of you search/research efforts as is suggested on How to Ask. – Rubén Sep 14 '19 at 15:27

Yes, it is parameter linewidth.
Example : =SPARKLINE(L4:L;{"linewidth"\3})

Reminder on how to construct a =sparkline :


More on sparkline here.

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