You can adjust the arrowheads.  Look 
at http://faculty.sfasu.edu/judsontw/ode/html-20190111/firstlook03.html for 
some examples.

On Sunday, January 27, 2019 at 10:11:47 AM UTC-6, Tevian Dray wrote:
>
> Can the formatting of arrows in 3d field plots be adjusted? 
>
> I'm trying to make rotatable, 3d versions of 2d field plots. 
> I can get most of what I want with, say: 
>     
> xy=plot_vector_field3d((x,y,0),(x,-1,1),(y,-1,1),(z,-1,1),colors='black') 
>     show(xy,orientation=(0,0,0,0)) 
> but I'd really like the output to look more like: 
>     plot_vector_field((x,y),(x,-1,1),(y,-1,1)) 
> In other words, more obvious arrowheads.  A bigger plot would also help, 
> to allow setting plot_points to 20 -- the default for 2d. 
>
> Are the arrows and/or size (easily) configurable? 
>
> Thanks, 
>         Tevian 
>
>

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