Idea for OEIS plotting: Quasilog plots

[David W. Wilson]

> -----Original Message-----
> From: Maximilian Hasler [mailto:maximilian.hasler at gmail.com]
> Sent: Saturday, May 24, 2008 3:12 AM
> To: David W. Wilson; N. J. A. Sloane
> Cc: David W. Cantrell
> Subject: Re: Idea for OEIS plotting: Quasilog plots
> 
> Indeed asinh() is an increasing, smooth bijection from R to R,
> equivalent to sgn(x)log|x| at |x|=oo, and equivalent to x at x=0.
> Concerning the labelling of axes, they are to be labelled simply
> according to the position of the values (a "-1" where -1 goes, a "100"
> where 100 goes, etc.) - no need to worry about dividing by a constant
> factor or other complicated considerations.
> 
> Maximilian

On second thought, I'm not so sure about this.

The current OEIS plots, both the standard and log plots, have equally-spaced
tick marks along both axes. The quasilog plot would require either
unequally-spaced tick marks or else equally-spaced tick marks at funky
nonstandard y-coordinate values. Depending on the plotting package, it might
not be up to either task.