480kb? per square km maybeOriginally posted by Thornado:
Hmmm
Seems like a fairly low resolution...
The size of that map (in 24bit colours) should only be 480 kb uncompressed. Not such a large download. Their maps must be larger and have higher resolution than that?
The scale is about 2cm = 1km.
(@ 2.5m /pixel, 400 pixels per km)
A km^2 is 160,000 pixels (and 4cm^2 of map)
If using 16 bit colour we have 320kB per squ km (or 480kB in 24bit colour).
An A4 photocopy (at 100%) covers about 15 x 10 km = 150 squ km.
so: 150 x 320kb = 48,000kb or 48MB
If 24 bit colour: x 3/2 = 72MB
If 32 bit color: x 2 = 96MB
A full chart is about A1, or 8 A4 sheets:
16 bit: = 384MB
24 bit: = 576MB
32 Bit: = 768MB
Imagine re-downloading SPWaW 1-3 times for each map.....

A SPWAW 100 x 200 hex map (representing 5 x 10 km = 50 km^2) would need a file of
50 x 320kB = 4.8MB (16bit colour)


