[udig-devel] RenderingMetrics - units for accuracy

[Jody Garnett <jgarnett@xxxxxxxxxxxxxxx>]

Can this work as an understandable unit of accuracy?

>     /**
>      * Measure of the accuracy of the rendering job.
>      * </p>
>      * <p>
>      * Can we propose a concrete meaning, like distance in meters:
>      * <ul>
>      * <li>0.05 would location would be within 5 cm of intended
>      * <li>5.0 would indicate 5 m
>      * </ul>
>      * </p>
>      * <p>
>      * When playing with pixels lets assume we are talking about the 
> sample
>      * at the center of the pixel. Reprojecting the raster would
>      * obviously compound this error, almost stuck with 1/2 the 
> diagonal of
>      * a pixel as an accuracy measure.
>      * </p>
>      *
>      * @return an estimate of the accuracy of the rendering job.
>      */
>     public float accuracy();