gnuplot-beta — Developers and beta testers of new gnuplot code

[Gnuplot-beta] Patch 584968: Enable filled arrow heads

[Harald H. <h.h...@tu...>]

Yesterday I have posted a patch to sourceforge which enables arrow heads
to get filled. I have tested it only for postscript and x11 terminal.

Petr Mikulik has sent me an email where he suggests me to discuss my patch
at gnuplot-beta mailing list.

Here is what he wrote:


Comment By: Petr Mikulik (mikulik)
Date: 2002-07-22 18:21

Message:
Logged In: YES
user_id=3D31505

Interesting patch, this functionality is really missing. I
have the following comments:

1. It uses PM3D functionality. Please accompany such code
with #ifdef PM3D ... #endif, and test whether it compiles
without PM3D defined.

2. Your patch changes terminal API for arrows. This is a
major change which should be discussed at info-gnuplot-beta
mailing list. Please subscribe.

Thus, in order not to crash gnuplot when output is directed
to terminals not using do_arrow(), but having their own
_arrow() routine (e.g. fig, metapost, et al), I propose:

1. Don't change terminal API but use the same nasty hack
I've done for head length+angle using global variables:

int curr_arrow_headlength;    /* access head length + angle
without changing API */
double curr_arrow_headangle;  /* angle in degrees */

With that, I think the patch could be submitted -- but
please discuss at gnuplot-beta anyway.

2. Propose a change of the _arrow() terminal API so that the
last parameter is a structure with head options. This would
make it consistent over all terminals and would get rid of
those nasty hacks.



Thus, my questions are:

What do you think, should I introduce a hack in order to avoid changing
the API? Or would it be better to change the API as Petr has suggested?
I would prefer a change of the API since this would make future
enhancements easier.

Yours
Harald

--=20
Harald Harders                              Langer Kamp 8
Institut f=FCr Werkstoffe                     D-38106 Braunschweig
Technische Universit=E4t Braunschweig         Germany
E-Mail: h.h...@tu...                  Tel: +49 (0)5 31 - 3 91 - 30 62
WWW   : http://www.tu-bs.de/institute/ifw/  Fax: +49 (0)5 31 - 3 91 - 30 58

[Gnuplot-beta] Latest change at Line 1541 graph3d.c,v 1.55 2002/01/26

[Nigel N. <nN...@au...>]

A query about the sequence implied below: 
See Line 1541, graph3d.c,v 1.55 2002/01/26 
 
      if (two_edge3d_intersect(points, i, lx, ly, lz)) { 
        
            map3d_xy(lx[0], ly[0], lz[0], &x, &y); 
            
            map3d_xy(lx[1], ly[1], lz[1], &xx0, &yy0); 
 
############################################################## 
Line 1541 $Id: graph3d.c,v 1.55 2002/01/26 17:55:07 joze Exp $ 
Should the assignment to z be shifted down 6 lines, so that, 
like the other changes, it comes below the "else" ? 
 
            clip_move(x, y); 
            z =  (points[i - step].z + points[i].z) * .5;  <=== is 
#ifdef PM3D 
            if (color_from_column) 
              z =  (points[i - step].ylow + points[i].ylow) * .5; 
            else 
#endif 
                                                           <=== ?? 
              set_color(z2gray(z)); 
            clip_vector(xx0, yy0); 
      } 
    } 
  } 

[Gnuplot-beta] Installation Problem

[moraeslq<mor...@bo...>]

I'm using Conectiva Linux 6.0, and i'm
trying to install the GNU Plot in it.
I did a download of this tool and
follow the steps to install it. But, i
didn't have sucess. I was doing the
following steps:
- I typed "./configure";      OK
- I typed "make";              OK
- When I typed "make check", this
mensage appear:
make: *** No rule to make target 
`check'. Stop.
- After that, i typed "make install".

After these steps, i tryed to start
GNU Plot typing "gnuplot" in a graphic
mode.

What can i do to correctly install,
start and use this tool?

Thanks for your help.

Leonardo Moraes
Salvador - Bahia - Brazil

 
__________________________________________________________________________
Acesso pelo menor pre=E7o do mercado! R$ 14,90 nos 3 primeiros meses! 
ASSINE AGORA! http://www.bol.com.br/acessobol/

[Gnuplot-beta] [Q]Against the gmupot it is a anxious point.

[°­¼±Èñ <sos...@ha...>]

The gnuplt it will be able to understand source code well and it gives a =
question like this.=20
After calculating a numerical formula from the case gnuplot which I want =
knowing store a coordinate how and draw a graph. Specially compose the X,=
 the Y, a Z coordinate and the coordinate of the edge and the vertex how =
from 3 dimensions and store it wants knowing.=20
And 3 dimensions it held and when, it wants knowing an algorithm. I see t=
he source cord am gnuplot v.3.7.=20
When who assists, it will thank.=20
Be good one day.=20


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