Re: gnuplot algorithm to find axis spacing

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Daniel Farrell wrote:

> Where is this calculated in the code?

src/axis.c: gen_tics and make_tics()

> How does gnuplot calculate the step size between tic marks?

Compute the length of the axis, find a tic size from the usual 1/2/5 
times power-of-ten series that will create a "useful" number of tics 
(between 5 and 10) on that range.  Variations of this scheme are needed 
for logarithmic and time/date scales.