gnuplot-info

[Gnuplot-info] splot 3D vectors given in component form

[Michael <mfm...@pr...>]

Hi,

I want to create graphs for my homework assignment.  I have vectors in 
component form (ex. <0,1,0>).  I want to show 3D vectors by themselves, 
but I can't figure out how to do that.  I tried looking at 
arrowstyle.dem, but I don't understand how it works.

This is what I can do:

gnuplot> set arrow from 0,0,0 to 1,0,0
gnuplot> splot x

Now I can see the vector that I want, but the only way I can show it is 
by graphing an arbitrary function, which is not what I want. 

Also, the axes are shown at the sides of the graph instead of at the 
origin. 

My questions:

1) How can I show my vector(s) alone?



2) How do I make the axes show as the X-,Y-, and Z-axes (instead of 
showing at the edges of the graph)?



Thanks,
Michael

Re: [Gnuplot-info] splot 3D vectors given in component form

[<br...@ph...>]

Michael wrote:
> Also, the axes are shown at the sides of the graph instead of at the 
> origin. 

That's on purpose.  Axes in the middle of the drawable region are 
generally a bad idea if a automaton is to draw in that region.  It takes 
a human to tick and label an axis in the middle of the graph, and avoid 
getting either unreadable payload data or unreadable ticks.

> My questions:
> 
> 1) How can I show my vector(s) alone?

By plotting an entirely out-of-range function:

	set zrange [-1:1]
	splot 2.0

Or, if you updated beyond version 4.0, by doing a 3D 'with vectors' plot.