basicwiz opened this issue on Apr 07, 2009 · 88 posts
pjz99 posted Thu, 09 April 2009 at 4:07 PM
Quote - assume the creator is meaning a image with 4000 DPI * 4000 DPI, in x and y direction. Than it's a hires map. But 4000 * 4000 pixels could also be on a map of real 10 * 10 inch size and than it's only 400 DPI in each direction.
.... That's - uh - complete nonsense. DPI has zero, zip, nada, nunquam, nothing whatsoever to do with pixel "size". Bitmap pixels do not have an intrinsic size, they're a unit of convenience only. Size comes into play when you get to a printing device or display device. 4000x4000 pixels is exactly the same whether DPI is 1 or 1 million.