Re: [SLE] Need advice

Art,

On Sunday 12 February 2006 20:57, Art Fore wrote:
...

I did not get into the discussion on pixels, but I do understand the
difference between raster and vector, etc. I can see where the line
is jagged because of low resolution, completely understandable. What
I don't understand in Gimp, I see the jaggies on the display, but
when I print it out on a 600 dpi printer, I would expect them to be
much smoother than on a 100 dpi screen. When I look at the same
drawing with the rectangles added in Inkscape, I do not see the
jaggies anywhere near as much on screen, that is, they are not as
obvious. Guess the Pixel resolution for that must be based on the
drawing and not the screen resolution in Gimp, where in Inkscape, it
is based on the screen resolution, when translated to postscript for
a 600 dpi printer, it becomes even less obvious. Is that right?

Inkscape is a vector graphics drawing program. GIMP is a raster image
processor.

When you create a drawing in GIMP there is a specific resolution
associated with it. If you generate the image for 96 or 100 DPI (screen
resolution) and then print it on a medium resolution device such as a
laser printer, you will notice the scaling up (from 100 to, say 300 or
600 DPI) required to render that image at the proper absolute size on
paper.

When you create a drawing in Inkscape, there is no intrinsic resolution
associated with the image. Only physical dimensions of the lines and
curves that make it up. Thus whether rendered on a low-resolution
device (a monitor), a medium-resolution device (laser printer) or a
high-resolution device (phototypesetter) an optimal rendering for that
device at its native resolution is produced.

PostScript (and by extension, PDF) has both vector and raster image
capabilities, so a single PostScript page can include raster images and
vector components.


Art


Randall Schulz

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