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Re: [XForms] fl_xyplot_s2w bug resurfaces?

From: Jens Thoms Toerring
Subject: Re: [XForms] fl_xyplot_s2w bug resurfaces?
Date: Wed, 1 Dec 2010 00:06:26 +0100
User-agent: Mutt/1.5.20 (2009-06-14)

Hi Marcus,

On Mon, Nov 29, 2010 at 08:34:38PM -0500, Marcus D. Leech wrote:
> I'm using Xforms-1.0.92 on Fedora 14, and I'm finding that:
> fl_xyplot_s2w()
> Has an offset in the returned values -- that is they don't
> correspond to the actual data position -- I'm using fl_xyplot_s2w()
> inside
>   a "post" handler for an XYplot to display a "oneliner" showing the
> data coordinates, but they're incorrect -- they seem to have
>   an offset.   I saw this bug discussed back in 1997, but my
> recollection is that it had been fixed.

I don't remember that but found the discussion here:


But that doesn't seem to be a problem anymore - at least for
the xyplotall demo discussed there things seem to work cor-
rectly as far as I can see - the "onliner" popup seems to
display both the correct coordinates relative to the window
as well as the data coordinates relative to the xyplot the
mouse was clicked over.

Since I haven't done any changes to the fl_xyplot_s2w() function
at all (except a bit of reformating), the logic of that function
is rather straightforward and looks not immediately unsound, and
since it seems to work correctly with whe xyplotall demo program
I may need a bit more of input to be able to figure out where
things are going wrong. Is there a chance that you can me send
your program or some example program that exhibits that behaviour?
Or do you see this effect also with the xyplotall demo program?

                             Best regards, Jens
  \   Jens Thoms Toerring  ________      address@hidden
   \_______________________________      http://toerring.de

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