Is displayMetrix xdpi and ydpi accurate?
<p>Can the xdpi and ydpi settings be relied upon to accurately represent the physical pixels in once inch of screen space?  I need this to be accurate for some display code I'm writing.  I realize the documention says that this is the case, but I need to know if individual handsets get this right MOST OF THE TIME.</p>

<p>I know I can alternately use "densitiy" which will give me 120, 160, 240 steps of DPI, but an exact dpi would be much better.</p>

<p>Thanks!</p>
