> Hi Arjen:
>
> Here is what I now (revision 9253) get with Tcl-8.5 on Debian testing.
>
> tcl
> Missing examples : 19
> Differing postscript output : 11 20
> Missing stdout :
> Differing stdout :
>
> That's a substantial improvement from what I got before for Tcl-8.5. In
> particular some large differences that could not be analyzed by ndiff for
> two examples (15 and 16?) have been eliminated. Good work!
>
> The remaining differences for Tcl-8.5 are just for examples 11 and 20.
> The ndiff result confirms what you said about the small differences for
> example 11.
>
> softw...@raven> ndiff -relerr 0.9 x11[ct].psc |head
> 6c6
> < %%CreationDate: Mon Jan 5 10:32:05 2009
> --- field 5
>> %%CreationDate: Mon Jan 5 10:33:42 2009
> ### Maximum relative error in matching lines = 7.79e-04 at line 33792
> field 16
>
> Here is the ndiff summary for example 20.
>
> softw...@raven> ~/ndiff/install/bin/ndiff -relerr 1 x20[ct].psc
> 6c6
> < %%CreationDate: Mon Jan 5 10:32:06 2009
> --- field 5
>> %%CreationDate: Mon Jan 5 10:33:44 2009
> ### Maximum relative error in matching lines = 1.0e+00 at line 255608
> field 1
>
> To see the first two examples of that type of large relative error ndiff
> should be run as follows:
>
> softw...@raven> ~/ndiff/install/bin/ndiff -relerr 0.9 x20[ct].psc |head
> -12
> 6c6
> < %%CreationDate: Mon Jan 5 10:32:06 2009
> --- field 5
>> %%CreationDate: Mon Jan 5 10:33:44 2009
> 255608c255608
> < 0.0039 0.0039 0.0039 C Z
> --- field 1 relative error 1.0e+00
>> 0.0000 0.0000 0.0000 C Z
> 307524c307524
> < 0.0039 0.0039 0.0039 C Z
> --- field 1 relative error 1.0e+00
>> 0.0000 0.0000 0.0000 C Z
>
> These are RGB PostScript colour settings so this confirms your
> result that there is an important Tcl-8.5 colour issue with example 20.
>
> In sum, the results I get on my Linux Tcl-8.5 (64-bit) platform seem to
> confirm everything you have found on your Windows Tcl-8.5 platform
> including
> the good results you have now achieved for all examples other than 11 and
> 20.
> That sort of cross-platform confirmation is reassuring, and I hope it
> encourages you to go on to solve the issues for example 11 and 20.
>
Hi Alan,
that is certainly encouraging to hear. I have looked at example 11
again and I conclude that the difference most probably arises in the
interface for just one of the plot routines - I think plot3d, judging
from the locations of the differences versus the literal text
("Example 11 ...").
Something similar is happening in example 20: it is no longer the
Tcl code where the differences are coming from. It is the interface.
Regards,
Arjen
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