Re: [Plplot-general] making vector plots

[Arjen M. <arj...@wl...>]

Andrew Ross wrote:
> 

> 
> There is no guarantee about the positioning or ordering of the vectors.
> They could be randomly placed. In fact I have had need to do this
> myself. In this case it is not trivial to decide the appropriate spacing
> while keeping the algorithm efficient for the normal large grid of
> regularly spaced vectors. I'm sure I can do better than the current
> approach though.
> 

I propose a very simple algorithm:
- Determine a bounding box for the grid points/data points
- Divide its area by the total number of points - this gives a raw
indication
  of the average grid cell
- Take the square root to get a typical size 

This ought to be efficient and effective for most situations, except
where 
you have very small clusters.

Regards,

Arjen