[NTG-context] new (lmtx) beta

Fabrice Couvreur fabrice1.couvreur at gmail.com
Sat Oct 5 09:39:12 CEST 2019


Hi Hans,
Where is this documentation ?
Thank you.
Fabrice



Le ven. 4 oct. 2019 à 21:34, Mikael P. Sundqvist <mickep at gmail.com> a
écrit :

> On Fri, Oct 4, 2019 at 6:11 PM Hans Hagen <j.hagen at xs4all.nl> wrote:
>
>> Hi,
>>
>> I uploaded a new lmtx beta. Again some more metafun trickery (see
>> luametafun manual). I attached an (lmtx only) example of some experiment
>> code, dedicated to Alan Braslau (teacher among other things).
>>
>> Hans
>>
>> -----------------------------------------------------------------
>>                                            Hans Hagen | PRAGMA ADE
>>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
>> -----------------------------------------------------------------
>>
>> ___________________________________________________________________________________
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>>
>> maillist : ntg-context at ntg.nl /
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>> ___________________________________________________________________________________
>>
>
>
> Hi,
>
> I read the new manual with a great joy! This is really nice improvements
> of MetaFun! I also like the 3D plots!
>
> I had the possibility to try out some contour graphics on a freshly
> updated system. I have two questions:
>
> 1) I think the first (blue) plot looks fine and it looks like it could be
> the same curve as the blue one in the Mathematica plot (page 3). Why does
> my second example (orange) not match with the result from Mathematica
> (orange)? (I think I do something wrong)
> 2) Is there a way to combine the two contour plots in one MetaFun drawing?
> If I add them both to the same, only the last one shows. If I try
> functions={"-4+x^2+x^5+15*y-y^2-10*x^3*y^2+5*x*y^4","-15*x+2*x*y+5*x^4*y-10*x^2*y^3+y^5"}
> it does not show both either.
>
> /Mikael
>
> Test document (output was too big to attach (sorry if it came through to
> someone), so I put it at http://www.maths.lth.se/~mickep/polynomnoll.pdf )
>
> \starttext
> \startMPpage[offset=3bp,instance=doublefun]
> draw lmt_contour [
> xmin=-5,
> xmax=5,
> ymin=-5,
> ymax=5,
> xstep=0.01,
> ystep=0.01,
> range={0},
> levels=1,
> function="-4+x^2+x^5+15*y-y^2-10*x^3*y^2+5*x*y^4",
> linecolor="darkblue",
> linewidth=1,
> legend=false,
> cache=true,
> ]  xsized 10cm ;
> \stopMPpage
>
> \startMPpage[offset=3bp,instance=doublefun]
> draw lmt_contour [
> xmin=-5,
> xmax=5,
> ymin=-5,
> ymax=5,
> xstep=0.01,
> ystep=0.01,
> range={0},
> levels=1,
> function="-15*x+2*x*y+5*x^4*y-10*x^2*y^3+y^5",
> linecolor="orange",
> linewidth=1,
> legend=false,
> cache=true,
> ]  xsized 10cm ;
> \stopMPpage
>
> \startbuffer[mmainput]
> ContourPlot[
>  {-4+x^2+x^5+15y-y^2-10x^3y^2+5x*y^4 == 0,
>   -15x+2x*y+5*x^4*y-10x^2*y^3+y^5 == 0},
>   {x, -5, 5}, {y, -5, 5}, Frame -> False]
> \stopbuffer
> \startTEXpage[offset=2bp]
> \typebuffer[mmainput]
>
> \externalfigure[mathematicaplot][width=10cm]
> \stopTEXpage
> \stoptext
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context at ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>
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