Re: [Gnuplot-bugs] strange bug involving gnuplot's x, y, z-fit and data-file names

[Dan T. <dan...@gm...>]

On Mon, Feb 2, 2009 at 5:22 PM, Hans-Bernhard Bröker
<HBB...@t-...> wrote:
> Dan Tsafrir wrote:
>
>> 1:
>> This bug report describes how gnuplot's (x,y,z)-fit may erroneously
>> fail on "undefined variable" when fitting it against a certain data
>> file, and how the problem may go away if changing the name of this
>> file.  (I'm only able to make the problem go away on gnuplot version
>> 4.2.2; conversely, on 4.2.4 the problem persists.)
>
> Actually, you seem to only have changed a file name in an splot command a
> couple of lines before the 'fit'.

This is exactly why I used the term "strange" to describe the bug.


> And FWIW the bug doesn't reproduce on version 4.2.3 in Windows.
>
> Which, to me, suggests this might be something particular to the Debian
> release package.  Could you build your own gnuplot from our official source
> tarball and see if this still triggers?

I've download and compiled 4.2.4, and confirmed that gnuplot still
erroneously fails with the message  "undefined variable: d".

>
> Oh, and you may want to lose the bigger-than-one size settings.  Please see
> "help set size".

Modifying the size to 1 didn't change anything: the bug persists.
FYI, I've opened a bug report in:

    https://sourceforge.net/tracker/?func=detail&atid=102055&aid=2556225&group_id=2055

Dan.