[apluslist] Surface plots in A+

[Alexander Skomorokhov]

Pedro,

> I thought, though, that A+ **had** a 3D graphic primitive, just like it
> has for 2D plots. Unfortunately it appears that A+ does not have it. For
It HAS 3D plotting capabilities! Unfortunately it uses some third party
solutions (as Morgan people told me) and was not released under GPL.
It also is true for database access from A+. We may only wait that it would
be changed in the future. Many proprietary software pieces are publishing
via GPL now...

Meantime gnuplot is an excellent product. We probably to look for more
elegant
and close communication to it from A+.

Regards,
Sasha.

> instance, J has embedded 3D plotting capabilities, I
> guess using Gnuplot.
>
> Cheers,
>
> Pedro
>
> On Thu, 9 Sep 2004, Alexander Skomorokhov wrote:
>
> > Hi Pedro,
> >
> > Better late than never. I missed this message somehow...
> > I suggest using gnuplot for 3D (and maybe other) plotting. Prepare small
> > file of
> > gnuplot commands like the following:
> > ---------------------------------------------
> > sasha at suse82:~> cat gp
> > #!/bin/bash
> > (echo 'set terminal postscript'
> > echo 'set output "fig.ps"'
> > echo 'plot "tmp.dat"')>temp.gp
> > gnuplot temp.gp
> > \rm temp.gp
> > ---------------------------------------------
> > I was lazy to prepare data for 3D and use command "plot" here.
> You have to
> > use
> > gnuplot command "splot" for 3D plotting. In the file above you
> may also set
> > your
> > axis labels and stuff like that.
> >
> > Make it executable:
> > ---------------------------------------------
> > sasha at suse82:~> chmod +x gp
> > ---------------------------------------------
> >
> > Now in A+, for example,
> > ---------------------------------------------
> >      $mode ascii
> >      rho m       //variable to plot
> >  100 2
> >      $>m tmp.dat //write it to tmp file
> >      sys.system{"./gp"} //plot it with gnuplot
> >  0
> > ---------------------------------------------
> >
> > Back to shell. File with postscript of your figure:
> > ---------------------------------------------
> > sasha at suse82:~> ls fig.ps
> > fig.ps
> > View it:
> > sasha at suse82:~>gv fig.ps
> > ---------------------------------------------
> > Hope this helps.
> >
> > Regards,
> > Sasha.
> >
> > > -----Original Message-----
> > > From: apluslist-bounces at aplusdev.net
> > > [mailto:apluslist-bounces at aplusdev.net]On Behalf Of Pedro
> > > Rodrigues de Almeida
> > > Sent: Saturday, August 07, 2004 5:37 PM
> > > To: apluslist at aplusdev.net
> > > Subject: [apluslist] Surface plots in A+
> > >
> > >
> > > Hi!
> > >
> > > Is there an obvious way to produce 3D renditions of functions of two
> > > variable in A+ (for instance, just like in J)? and if so, could you
> > > please direct me to the right reference (so far I did not
> find anything
> > > in the online manuals).
> > >
> > > Thanks,
> > >
> > > Pedro Rodrigues de Almeida
> > > Helsinki - Finland
> > >
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> > >
> >
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>
>