gnuplot development

Donald J Bindner wrote:

> So today I downloaded the source for gnuplot from CVS and built
> it.  It does a beautiful job of printing my 3D vector fields.
> However, when I plot 2D data with plot, all of the arrows are
> missing their heads.  It would seem that either my vectors are
> being drawn with the line style by mistake or that the head style
> of the arrows is broken.

Without seeing the exact commands and a sample datafile that exhibit 
that problem, it's hard to address that problem meaningfully.

Try starting out with the existing 'vector.dem' (which does work here), 
and try if you can modify it to break.

On Sat, Mar 25, 2006 at 01:47:41PM +0100, Hans-Bernhard Br?ker wrote:
> Without seeing the exact commands and a sample datafile that exhibit 
> that problem, it's hard to address that problem meaningfully.
> 
> Try starting out with the existing 'vector.dem' (which does work here), 
> and try if you can modify it to break.

Ok.  The vector.dem demo seems to work for me.  What I was doing
was much simpler.

vec.dat:
0 0 1 1

I tried to plot it with:
plot "vec.dat" w vec

It works in my older version, but in the CVS pull, there is no
arrow head.

-- 
Don Bindner <dbindner@...>

On Sat, Mar 25, 2006 at 08:19:24AM -0600, Donald J Bindner wrote:
> Ok.  The vector.dem demo seems to work for me.  What I was doing
> was much simpler.
> 
> vec.dat:
> 0 0 1 1
> 
> I tried to plot it with:
> plot "vec.dat" w vec

To follow up on that post, the arrow heads are correct if I plot
something else along at the same time:

plot "vec.dat" w vec, 0

-- 
Don Bindner <dbindner@...>

Donald J Bindner wrote:
> vec.dat:
> 0 0 1 1

> I tried to plot it with:
> plot "vec.dat" w vec

> It works in my older version, but in the CVS pull, there is no
> arrow head.

Yep, that's a bug alright.  I'll investigate.