[GRASS5] Screen shots again

GRASS GIS GRASS GIS developer
1

All the png's are working now on the screenshots pages. I am unable to
update index.php however. I will try again on Monday, but will be out of
town the rest of next week and won't have access to the CVS. If I can get
index.php updated and finish a bit of cosmetic work on the pages (getting
the top menu and left side menu to meet), I'll go ahead and link these into
the main grass web site.

Don't send me screen shots next week while I'm away. But if you have any
nice ones of GRASS 6, I'd be happy to add them after that. Be sure to
include a small (ca. 10 kb) and large (<100 kb) image and a caption.

Hamish suggested that png's look better than jpg's if you are showning
menus. However, I've not been able to get them small enough and still look
good. Does anyone have any suggestion along that line?

Cheers,
Michael
____________________
C. Michael Barton, Professor of Anthropology
School of Human Evolution and Social Change
PO Box 872402
Arizona State University
Tempe, AZ 85287-2402
USA

Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>

2

Hamish suggested that png's look better than jpg's if you are showning
menus. However, I've not been able to get them small enough and still
look good. Does anyone have any suggestion along that line?

Making PNGs small (in order or importance):

1) reduce the number of colors in the image
GIMP 2.2: Image->Mode->Indexed->Max # of colors
(or use NetPBM: pngtopnm | pnmquant | pnmtopng)
reduce until it starts to look bad then go back a little

2) pngcrush will usually get you down another 10% without quality loss.
http://pmt.sourceforge.net/
(command line program - should compile on Mac ok.)

Images with lots of color gradients & shading (e.g. remote sensing or
NVIZ output) will generally be smaller/better as JPEG.

Images with large areas of constant color or with features you want to
preserve exactly (eg small text) will be smaller and look better as PNG.

but somewhat trial & error ....

Hamish