Re: "noreverse" is listed as option to xrange when it is no longer interpreted

[Daniel J S. <dan...@ie...>]

On 05/23/2015 09:45 AM, sfeam wrote:
> On Saturday, 23 May 2015 01:56:30 AM Daniel J Sebald wrote:
>> I notice that even though "reverse/noreverse" has been deprecated,
>
> reverse/noreverse is deprecated only in the sense that its meaning
> has been restricted to the originally documented case of autoscaling.
>
>> the option setting "noreverse" appears in the list, i.e.:
>>
>> Terminal type set to 'qt'
>> gnuplot>  show xrange
>>
>> 	set xrange [ * : * ] noreverse nowriteback  # (currently [-10.0000:10.0000] )
>> Might it be better to leave out the "noreverse" value?
>
> That tells you autoscaling on x will produce the 'normal' axis layout
> with lower x values on the left side.  If it said instead
>> 	set xrange [ * : * ] reverse nowriteback  # (currently [-10.0000:10.0000] )
> that would indicate autoscaling will produce a layout with lower x values
> on the right side.

Oh yeah, reverse autoscaling.


>> From "help set xrange":
>
>   The `reverse` option reverses the direction of an autoscaled axis. For example,
>   if the data values range from 10 to 100, it will autoscale to the equivalent of
>   set xrange [100:10].  The `reverse` flag has no effect if the axis is not
>   autoscaled. NB: This is a change introduced in version 4.7.

I've built version 4.6 and the [b:a] for a < b and no "reverse" option 
does a reverse.  Was it always the case that worked?  If so, there's no 
need for a version/feature check.

Dan