GROBW/GROBH vs GROBW_P/GROBH_P

[toml_12953]

(10-11-2018 07:34 PM)sasa Wrote:  

(10-11-2018 06:34 PM)toml_12953 Wrote:  ...
THAT was my point.

My point was that Cartesian plane in HP Prime is not perfectly implemented and I have asked only confirmation for unexpected numbers, on which Tim elaborated clearly.

The Cartesian plane seems to work pretty good for me but I wonder why setting Ymin and Ymax doesn't map the entire screen to those coordinates. a band of about 0.7cm across the bottom isn't mapped like the rest of the screen. I set Ymin to -1 and Ymax to 1 and get the band. If I set Ymin to -.85, the entire screen is mapped. Is this documented somewhere?