Difference: DuckyInfoVisMilestones (3 vs. 4)

Revision 42005-12-09 - DuckySherwood

Line: 1 to 1

META TOPICPARENT	name="DuckyInfoVisProject"

Ducky's Info Vis Milestones

Bugs

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fix intersectsRectangle better -- coll terr must do 1982 but not 1937

~~Can't drag~~

Changed:

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sometimes tracts don't draw -- see College Terrace

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Current worries

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What are storage needs?
- in Palo Alto, .005 degrees long for 500 pixels at max zoom in => 100,000 pixels / degree
- in Palo Alto, .002 degrees lat for 300 pixels at max zoom in => 150,000 pixels / degree
- US is about (-66 to -124) 58 degrees wide => 12,000 images wide (at 5K apiece)
- US is about (32 to 48) 16 degrees tall => 8,000 images tall (at 5K apiece)
- so at max zoom level, 96M images to cover the whole US * 5K => 480G
- roughly powers of two as zoom out; 15 zoom levels before whole US fits (after that, it's just silly?)
- so roughly 2*480G worth of space needed for whole US, or about 1000G
- if it takes about 5 sec to render a little one =>

What are units of boundary areas?

What if different browsers don't work?
caching
How do I deal with the huge dynamic range?

View topic | History: r11 < r10 < r9 < r8 | More topic actions...

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