[GRASS5] d.what.rast & quantization

[Markus Neteler]

Hi,

looking at d.what.rast, I see output like this:

d.what.rast

Buttons
 Left:  what's here
 Right: quit

278786.03515625(E) 5232741.95078125(N)
elev in PERMANENT, quant   (447)
elev in PERMANENT, actual  (447.190521)

279031.25390625(E) 5233060.73515625(N)
elev in PERMANENT, quant   (539)
elev in PERMANENT, actual  (540.034363)

278700.20859375(E) 5235660.05390625(N)
elev in PERMANENT, quant   (-557)
elev in PERMANENT, actual  (-558.007324)

The quantization rule is not obvious to me, what's the
background to get such results?

Thanks

 Markus