gnuplot 4.6 reverse axis w/o autoscale

[Laszlo Hars]

I can use either of the following to have the y axis reversed:
set yrange [-1:30] reverse
set yrange [30:-1]

But I also wanted to prevent gnuplot to autoscale the y axis, so I tried both
set yrange [-1.1<*<-0.9:29.9<*<30.1] reverse
set yrange [29.9<*<30.1:-1.1<*<-0.9]

None of them worked. What is the right way to reverse the y axis and prevent autoscale? The following does not seem to work, either:
unset autoscale

[Hans-Bernhard Broeker]

But I also wanted to prevent gnuplot to autoscale the y axis

The commands you gave before already turn off autoscaling, so that "but" makes no sense.

[Laszlo Hars]

Try this (the y axis is not reversed):

set xrange [-1.1<\*<-0.9:100.9<\*<101.1]
set yrange [-1.1<\*<-0.9:30.9<\*<31.1] reverse
plot '-'
-1 -1
101 31
e

Btw. I try to use gnuplot from Julia, with the Gaston module. The problem there is that Gaston actually sets autoscale, and it cannot be disabled. I removed the offending line from the library module, and now the simple "set yrange [-1:30] reverse" works. Nevertheless, the above listed problem of "reverse" not working with range restrictions still needs a note.