Re: [Gnuplot-bugs] Bug with 4.4 and log-scale?

[Tatsuro M. <tma...@ya...>]

Hello

--- Hubertus Bromberger wrote:

> Dear Thomas,
> > there was a bug up to version 4.2.6. this has been repaired
> >in version 4.4, see the ChangeLog file at 2009-10-10.
> thanks for the hint. But still, I don't get quite the idea why to save a
> logscale axes in  a linear way...
> Is there a way to get the old output working again?

>From your reference,
http://sourceforge.net/mailarchive/forum.php?thread_name=4BC3615B.2010906%40arcor.de&forum_name=pgfplots-feature

set table "test.saturableAbsTrans.table"; set format "%.5f"
set format "%.7e";; set samples 100; set logscale x 2.71828182845905; 
plot [x=1:10000] 99.*log(1+97./99.*(exp(x/60.)-1))/(x/60.);

in gnuplot 4.4. The expected output contains log scale for x, as in
-------------------------------
#Curve 0 of 1, 100 points
#x y type
0.0000000e+000 9.7016243e+001  i
9.3033741e-002 9.7017818e+001  i
1.8606748e-001 9.7019544e+001  i
2.7910122e-001 9.7021436e+001  i
3.7213496e-001 9.7023510e+001  i
-------------------------------

but gnuplot 4.4 writes
-------------------------------
# Curve 0 of 1, 100 points
# Curve title: "99.*log(1+97./99.*(exp(x/60.)-1))/(x/60.)"
# x y type
1.0000000e+00 9.7016243e+01  i
1.0974988e+00 9.7017818e+01  i
1.2045035e+00 9.7019544e+01  i
1.3219411e+00 9.7021436e+01  i
1.4508288e+00 9.7023510e+01  i
1.5922828e+00 9.7025783e+01  i
-------------------------------
?????????????????????????

xrange begins from 1 so that the table of 4.2.6 is obviously buggy.
logscale table begins from zero is obviously non-sense.  
The correction which is indicated in ChangeLog at 2009-10-10 perhaps corrected this bug.

Do you insist that we have to back to buggy table list?

Regards

Tatsuro


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