Hey sorry for the delay! This is unfortunately something I'm not sure how to handle in a reasonable way. Gnuplot understands how to automatically adjust function sampling given special functions like logarithms which have holes in their domain, but for Gnuplot to know what you're trying to plot, you have to use the text version.

E.g., if you do

(cl-ana::draw "log(x)")

then Gnuplot will know to not include 0 in the domain. However, whenever you want to manually draw a function which has holes in its domain, you will have to manually control the domain. In this case, something like

(cl-ana::draw (line #'log :sampling (list :low 1d-5 :high 3d0 :nsamples 1000)))

would do the trick.

I might be able to fix this by adding a filter step before sending data to Gnuplot so that Lisp isn't sending NaNs or infinities.